Disclosures on financial instruments (XLS:) Download Carrying amounts, amounts recognized, and fair values by class and measurement categorymillions of € Amounts recognized in the statement of financial position in accordance with IFRS 9 Categoryin accordancewith IFRS 9 Carrying amountJune 30, 2018 Amortized cost Fair value through other comprehensive income without recycling to profit or loss Fair value through other comprehensive income with recycling to profit or loss Fair value through profit or loss Amounts recognized in the statement of financial position in accordance with IAS 17 Fair value June 30, 2018a a The exemption provisions under IFRS 7.29a were applied for information on specific fair values. ASSETS Cash and cash equivalents AC 2,943 2,943 – Trade receivables At amortized cost AC 3,943 3,943 – At fair value through other comprehensive income FVOCI 4,968 4,968 4,968 At fair value through profit or loss FVTPL 11 11 11 Other financial assets Originated loans and other receivables At amortized cost AC 2,681 2,681 2,712 Of which: collateral paid AC 509 509 – At fair value through other comprehensive income FVOCI - – At fair value through profit or loss FVTPL 104 104 104 Equity instruments At fair value through other comprehensive income FVOCI 284 284 284 Derivative financial assets Derivatives without a hedging relationship FVTPL 997 997 997 Of which: termination rights embedded in bonds issued FVTPL 189 189 189 Of which: energy forward agreements embedded in contracts FVTPL Derivatives with a hedging relationship n. a. 175 14 161 175 Lease assets n. a. 148 148 – Equity instruments within non-current assets and disposal groups held for sale FVOCI 103 103 103 LIABILITIES Trade payables AC 8,924 8,924 – Bonds and other securitized liabilities AC 48,286 48,286 51,774 Liabilities to banks AC 5,082 5,082 5,139 Liabilities to non-banks from promissory notes AC 514 514 604 Other interest-bearing liabilities AC 2,234 2,234 2,285 Of which: collateral received AC 546 546 – Other non-interest-bearing liabilities AC 1,551 1,551 – Finance lease liabilities n. a. 2,646 2,646 2,904 Derivative financial liabilities Derivatives without a hedging relationship FVTPL 314 314 314 Of which: options granted to third parties for the purchase of shares in subsidiaries and associates FVTPL 10 10 10 Of which: energy forward agreements embedded in contracts FVTPL 65 65 65 Derivatives with a hedging relationship n. a. 636 101 535 636 Of which: aggregated by category in accordance with IFRS 9 ASSETS Financial assets at amortized cost AC 9,567 9,567 2,712 Financial assets at fair value through other comprehensive income with recycling to profit or loss FVOCI 4,968 4,968 4,968 Financial assets at fair value through other comprehensive income without recycling to profit or loss FVOCI 387 387 387 Financial assets at fair value through profit or loss FVTPL 1,112 1,112 1,112 LIABILITIES Financial liabilities at amortized cost AC 66,591 66,591 59,802 Financial liabilities at fair value through profit or loss FVTPL 314 314 314 Trade receivables include receivables amounting to EUR 1.5 billion (December 31, 2017: EUR 1.6 billion) due in more than one year. The fair value generally equals the carrying amount. (XLS:) Download Carrying amounts, amounts recognized, and fair values by class and measurement categorymillions of € Amounts recognized in the statement of financial position in accordance with IAS 39 Category in accordance with IAS 39 Carrying amountDec. 31, 2017 Amortized cost Cost Fair value recognized directly in equity Fair value through profit or loss Amounts recognized in the statement of financial position in accordance with IAS 17 Fair valueDec. 31, 2017a a The exemption provisions under IFRS 7.29a were applied for information on specific fair values. ASSETS Cash and cash equivalents LaR 3,312 3,312 - Trade receivables LaR 9,553 9,553 - Originated loans and receivables LaR/n. a. 3,507 3,354 153 3,539 Of which: collateral paid LaR 504 504 – Other non-derivative financial assets Held-to-maturity investments HtM 5 5 – Available-for-sale financial assets AfS 4,216 187 4,029 4,029 Derivative financial assets Derivatives without a hedging relationship FAHfT 1,103 1,103 1,103 Of which: termination rights embedded in bonds issued FAHfT 351 351 351 Of which: energy forward agreements embedded in contracts FAHfT – – Derivatives with a hedging relationship n. a. 214 42 172 214 Non-current assets and disposal groups held for sale AfS LIABILITIES Trade payables FLAC 10,934 10,934 Bonds and other securitized liabilities FLAC 45,453 45,453 50,472 Liabilities to banks FLAC 4,974 4,974 5,062 Liabilities to non-banks from promissory notes FLAC 480 480 582 Liabilities with the right of creditors to priority repayment in the event of default FLAC – – – Other interest-bearing liabilities FLAC 1,598 1,598 1,629 Of which: collateral received FLAC 569 569 – Other non-interest-bearing liabilities FLAC 1,443 1,443 – Finance lease liabilities n. a. 2,635 2,635 2,635 2,893 Derivative financial liabilities Derivatives without a hedging relationship FLHfT 337 337 337 Of which: conversion rights embedded in Mandatory Convertible Preferred Stock FLHfT – – – Of which: options granted to third parties for the purchase of shares in subsidiaries FLHfT 10 10 10 Of which: energy forward agreements embedded in contracts FLHfT 46 46 46 Derivatives with a hedging relationship n. a. 609 168 441 609 Derivative financial liabilities directly associated with non-current assets and disposal groups held for sale FLHfT – – – Of which: aggregated by category in accordance with IAS 39 Loans and receivables LaR 16,219 16,219 3,386 Held-to-maturity investments HtM 5 5 – Available-for-sale financial assets AfS 4,216 187 4,029 4,029 Financial assets held for trading FAHfT 1,103 1,103 1,103 Financial liabilities measured at amortized cost FLAC 64,882 64,882 57,745 Financial liabilities held for trading FLHfT 337 337 337 The portfolio of financial assets by measurement category in accordance with IAS 39 is reconciled to the IFRS 9 measurement categories as follows: (XLS:) Download Reconciliation of financial assets from IAS 39 to IFRS 9millions of € Carrying amountDec. 31, 2017(IAS 39) Reclassificationa Reclassificationto other comprehensive income Remeasurementsb Carrying amountJan. 1, 2018 (IFRS 9)c Effect to be recognized in retained earningsJan. 1, 2018d a Carrying amount under IAS 39 that must be reclassified from an IAS 39 category to a new IFRS 9 category. b Resulting difference from the revaluation of an IAS 39 instrument under the new IFRS 9 category. c The allowances posted under trade receivables recognized at fair value through other comprehensive income were offset with the receivables. On initial presentation of the transition to IFRS 9 in the Interim Group Report for the period January 1 to March 31, 2018, these allowances were recognized gross in other comprehensive income. d Effects include shares attributable to non-controlling interests. AT FAIR VALUE THROUGH PROFIT OR LOSS Ending balance in accordance with IAS 39 1,103 1,103 Additions to IFRS 9 – At fair value through profit or loss from IAS 39 – Loans and receivables or held-to-maturity investments 8 8 IAS 39 – Available-for-sale financial assets 12 12 1,103 20 1,123 AT FAIR VALUE THROUGH OTHER COMPREHENSIVE INCOME Ending balance in accordance with IAS 39 4,216 4,216 Additions to IFRS 9 – At fair value through other comprehensive income with recycling to profit or loss from IAS 39 – Loans and receivables or held-to-maturity investments 5,035 (101) (2) 4,931 (97) Disposals from IAS 39 – Available-for-sale financial assets to IFRS 9 – At amortized cost (185) (185) IFRS 9 – At fair value through other comprehensive income with recycling to profit or loss (1) (1) (1) IFRS 9 – At fair value through profit or loss (12) (12) 4,216 4,838 (101) (3) 8,950 (99) AT AMORTIZED COST Ending balance in accordance with IAS 39 16,226 16,226 Additions to IFRS 9 – At amortized cost from IAS 39 – Available-for-sale financial assets 185 185 Disposals from IAS 39 – Loans and receivables or held-to-maturity investments to IFRS 9 – At amortized cost (312) (38) (350) (38) IFRS 9 – At fair value through other comprehensive income with recycling to profit or loss (5,035) (5,035) IFRS 9 – At fair value through profit or loss (8) (8) 16,226 (5,170) (38) 11,017 (38) TOTAL CHANGE 21,544 (312) (101) (41) 21,090 (137) The main reclassifications from the old IAS 39 measurement categories to the new IFRS 9 measurement categories relate to portfolios of trade receivables that are to be sold under a factoring agreement. Previously assigned to the category “Loans and receivables” and measured at amortized cost, these receivables are now measured – depending on the underlying business model – either at fair value through other comprehensive income with recycling to profit or loss, or at fair value through profit or loss. Trade receivables with a carrying amount of EUR 135 million were reclassified as contract assets in accordance with IFRS 15. In addition, Deutsche Telekom reclassified all equity instruments previously recognized as available-for-sale financial assets to the IFRS 9 category “At fair value through other comprehensive income without recycling to profit or loss.” Under IFRS 9, debt instruments previously assigned to the categories “Available-for-sale financial assets,” “Held-to-maturity investments,” and “Loans and receivables” are reclassified – depending on the underlying business model and the cash flow characteristics of each instrument – to the new categories “At amortized cost,” “At fair value through other comprehensive income with recycling to profit or loss,” or “At fair value through profit or loss.” The allocation of financial liabilities to IFRS 9 measurement categories does not result in any changes. The names of the measurement categories were updated to reflect the wording of the new standard. Subsidiaries that are not included in the consolidated financial statements due to their subordinate significance, and which were previously recognized under IAS 39 at amortized cost as available-for-sale financial assets, are recognized under other assets as of the 2018 financial year and were reclassified as of January 1, 2018 with a carrying amount of EUR 177 million. The following table shows the classes of financial assets and liabilities under IFRS 9 along with their previous and current measurement categories and carrying amounts: (XLS:) Download Classes of financial instruments in accordance with IFRS 9 Measurement categories Carrying amounts Dec. 31, 2017/Jan. 1, 2018 IAS 39 IFRS 9 IAS 39 IFRS 9 Difference a Carrying amount in accordance with IAS 17. ASSETS Cash and cash equivalents Loans and receivables (LaR) Amortized cost (AC) 3,312 3,312 0 Trade receivables Loans and receivables (LaR) 9,400 At amortized cost Amortized cost (AC) 4,344 (5,056) At fair value through other comprehensive income Fair value through other comprehensive income (FVOCI) 4,919 4,919 At fair value through profit or loss Fair value through profit or loss (FVTPL) 6 6 Other financial assets Originated loans and other receivables At amortized cost Loans and receivables (LaR) or held-to-maturity investments (HtM) or available-for-sale financial assets (AfS) Amortized cost (AC) 3,512 3,361 (151) Of which: collateral paid Loans and receivables (LaR) Amortized cost (AC) 504 504 – At fair value through profit or loss Available-for-sale financial assets (AfS) Fair value through profit or loss (FVTPL) 14 14 – Equity instruments At fair value through other comprehensive income Available-for-sale financial assets (AfS) Fair value through other comprehensive income (FVOCI) 4,202 4,029 (173) At fair value through profit or loss Available-for-sale financial assets (AfS) Fair value through profit or loss (FVTPL) – – – Derivative financial assets Derivatives without a hedging relationship Financial assets held for trading (FAHfT) Fair value through profit or loss (FVTPL) 1,103 1,103 – Of which: termination rights embedded in bonds issued Financial assets held for trading (FAHfT) Fair value through profit or loss (FVTPL) 351 351 – Derivatives with a hedging relationship n. a. n. a. 214 214 – Lease assetsa n. a. n. a. 153 153 – LIABILITIES Trade payables Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 10,934 10,934 – Bonds and other securitized liabilities Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 45,453 45,453 – Liabilities to banks Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 4,974 4,974 – Liabilities to non-banks from promissory notes Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 480 480 – Other interest-bearing liabilities Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 1,598 1,598 – Of which: collateral received Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 569 569 – Other non-interest-bearing liabilities Financial liabilities measured at amortized cost (FLAC) Amortized cost (AC) 1,443 1,443 – Finance lease liabilities n. a. n. a. 2,635 2,635 – Derivative financial liabilities 337 337 – Derivatives without a hedging relationship Financial liabilities held for trading (FLHfT) Fair value through profit or loss (FVTPL) Of which: options granted to third parties for the purchase of shares in subsidiaries and associates Financial liabilities held for trading (FLHfT) Fair value through profit or loss (FVTPL) 10 10 – Of which: energy forward agreements embedded in contracts Financial liabilities held for trading (FLHfT) Fair value through profit or loss (FVTPL) 46 46 – Derivatives with a hedging relationship n. a. n. a. 609 609 – The allowances on financial assets in accordance with IAS 39 are being reconciled to the IFRS 9 requirements as follows: (XLS:) Download Allowances on financial assetsmillions of € Trade receivables Contractassets Originated loans and other receivables Total Measurement categories in accordance with IAS 39 LaR LaR n. a. LaR in accordance with IFRS 9 AC FVOCI n. a. AC Allowances Amount in accordance with IAS 39 (Dec. 31, 2017) 1,303 334 0 19 1,657 Additions resulting from change in measurement category 24 99 27 150 Disposals resulting from change in measurement category (13) (13) Amount in accordance with IFRS 9 (Jan. 1, 2018) 1,327 433 27 6 1,794 DIFFERENCE IN RETAINED EARNINGS (DEBIT (CREDIT)) 24 99 27 (13) 137 Financial instruments measured at fair value When determining the fair value, it is important to maximize the use of current inputs observable in liquid markets for the financial instrument in question and minimize the use of other inputs (e.g., historical prices, prices for similar instruments, prices on illiquid markets). A three-level measurement hierarchy is defined for these purposes. If prices quoted in liquid markets are available at the reporting date for the respective financial instrument, these will be used unadjusted for the measurement (Level 1 measurement). Other input parameters are then irrelevant for the measurement. One such example is shares and bonds that are actively traded on a stock exchange. Even if quoted prices on liquid markets are not available at the reporting date for the respective financial instrument, the instrument can be measured using other inputs that are observable on the market at the reporting date (Level 2 measurement). The conditions for this are that no major adjustments have been made to the observable inputs and no unobservable inputs are used. Examples of Level 2 measurements are collateralized interest rate swaps, currency forwards, and cross-currency swaps that can be measured using current interest rates or exchange rates. If the conditions for a Level 1 or Level 2 measurement are not met, a Level 3 measurement is applied. In such cases, major adjustments must be made to observable inputs or unobservable inputs must be used. (XLS:) Download Financial instruments measured at fair valuemillions of € June 30, 2018 Level 1 Level 2 Level 3 Total ASSETS Trade receivables At fair value through other comprehensive income 4,968 4,968 At fair value through profit or loss 11 11 Other financial assets – originated loans and other receivables At fair value through other comprehensive income – At fair value through profit or loss 94 10 104 Equity instruments At fair value through other comprehensive income 10 377 387 Derivative financial assets Derivatives without a hedging relationship 808 189 997 Derivatives with a hedging relationship 175 175 LIABILITIES Derivative financial liabilities Derivatives without a hedging relationship 239 75 314 Derivatives with a hedging relationship 636 636 (XLS:) Download Financial instruments measured at fair valuemillions of € Dec. 31, 2017 Level 1 Level 2 Level 3 Total ASSETS Available-for-sale financial assets (AfS) 3,752 277 4,029 Financial assets held for trading (FAHfT) 752 351 1,103 Derivative financial assets with a hedging relationship 214 214 LIABILITIES Financial liabilities held for trading (FLHfT) 281 56 337 Derivative financial liabilities with a hedging relationship 609 609 Of the equity instruments measured at fair value through other comprehensive income and recognized under other financial assets, the instruments presented in the different levels constitute separate classes of financial instruments. In each case, the fair values of the total volume of equity instruments recognized as Level 1 are the price quotations at the reporting date. The total volume of instruments recognized as Level 1 amounted to EUR 10 million (December 31, 2017: EUR 3,752 million). The figure for the prior-year period included a strategic financial stake of 12 percent in BT with a carrying amount equivalent to around EUR 3.7 billion. In the reporting period, this stake was transferred to plan assets. The listed bonds and other securitized liabilities are assigned to Level 1 or Level 2 depending on the market liquidity of the relevant instrument. As a rule, issues denominated in euros or U.S. dollars with relatively large nominal amounts are to be classified as Level 1, the rest as Level 2. The fair values of the instruments assigned to Level 1 equal the nominal amounts multiplied by the price quotations at the reporting date. The fair values of the instruments assigned to Level 2 are calculated as the present values of the payments associated with the debts, based on the applicable yield curve and Deutsche Telekom’s credit spread curve for specific currencies. The fair values of liabilities to banks, liabilities to non-banks from promissory notes, other interest-bearing liabilities, and finance lease liabilities are calculated as the present values of the payments associated with the debts, based on the applicable yield curve and Deutsche Telekom’s credit spread curve for specific currencies. Since there are no market prices available for the derivative financial instruments in the portfolio assigned to Level 2 due to the fact that they are not listed on the market, the fair values are calculated using standard financial valuation models, based entirely on observable inputs. The fair value of derivatives is the value that Deutsche Telekom would receive or have to pay if the financial instrument were transferred at the reporting date. Interest rates of contractual partners relevant as of the reporting date are used in this respect. The middle rates applicable as of the reporting date are used as exchange rates. In the case of interest-bearing derivatives, a distinction is made between the clean price and the dirty price. In contrast to the clean price, the dirty price also includes the interest accrued. The fair values carried correspond to the full fair value or the dirty price. (XLS:) Download Development of the carrying amounts of the financial assets and financial liabilities assigned to Level 3millions of € Equity instruments at fair value through other comprehensive income Derivative financial assets at fair value through profit or loss: termination rights embedded in bonds issued Derivative financial liabilities at fair value through profit or loss: energy forward agreements embedded in contracts Carrying amount as of January 1, 2018 277 351 (46) Additions (including first-time categorization as Level 3) 111 11 0 Value decreases recognized in profit/loss (including losses on disposal) – (119) (19) Value increases recognized in profit/loss (including gains on disposal) – 60 2 Value decreases recognized directly in equity (25) – – Value increases recognized directly in equity 31 – – Disposals (17) (118) – Currency translation effects recognized directly in equity – 4 (2) CARRYING AMOUNT AS OF JUNE 30, 2018 377 189 (65) The equity instruments assigned to Level 3 that are measured at fair value through other comprehensive income and carried under other financial assets are equity investments with a carrying amount of EUR 368 million measured using the best information available at the reporting date. As a rule, Deutsche Telekom considers executed transactions involving shares in those companies to have the greatest relevance. Transactions involving shares in comparable companies are also considered. The closeness of the transaction in question to the reporting date and the question of whether the transaction was at arm’s length are relevant for the decision on which information will ultimately be used for the measurement. Furthermore, the degree of similarity between the object being measured and comparable companies must be taken into consideration. Based on Deutsche Telekom’s own assessment, the fair values of the equity investments at the reporting date could be determined with sufficient reliability. Please refer to the table on the previous page for the development of the carrying amounts in the reporting period. No plans existed as of the reporting date to sell these investments. In the case of investments with a carrying amount of EUR 283 million, transactions involving shares in these companies took place at arm’s length sufficiently close to the reporting date, which is why the share prices agreed in the transactions were to be used without adjustment for the measurement as of June 30, 2018. In the case of investments with a carrying amount of EUR 85 million, although the last at arm’s length transactions relating to shares in these companies took place some time ago, based on the analysis of operational development (in particular revenue, EBIT, and liquidity), the previous carrying amount nevertheless corresponds to the fair value and, due to limited comparability, is preferable to measurement on the basis of transactions executed more recently relating to shares in comparable companies. As of the reporting date, there were no investments for which the latest at arm’s length transactions relating to shares in these companies took place some time ago and where a measurement executed more recently via shares in comparable companies provides a better representation of the fair values. In addition, non-material individual items with a carrying amount of EUR 9 million are included with differences in value of minor relevance. The derivatives without a hedging relationship assigned to Level 3 and carried under derivative financial assets relate to options embedded in bonds issued by T-Mobile US with a carrying amount of EUR 189 million when translated into euros. The options, which can be exercised by T-Mobile US at any time, allow early redemption of the bonds at fixed exercise prices. Observable market prices are available routinely and also at the reporting date for the bonds as entire instruments, but not for the options embedded therein. The termination rights are measured using an option pricing model. Historical interest rate volatilities of bonds issued by T-Mobile US and comparable issuers are used for the measurement because these provide a more reliable estimate at the reporting date than current market interest rate volatilities. The absolute figure used for the interest rate volatility at the current reporting date was between 1.2 and 2.3 percent. The significant decline in this value compared with the prior year is mainly attributable to the improvement in the rating of T-Mobile US in the reporting period. The spread curve, which is also unobservable, was derived on the basis of current market prices of bonds issued by T-Mobile US and debt instruments of comparable issuers. The spreads used at the current reporting date were between 2.5 and 3.4 percent for the remaining maturities of the bonds and between 1.5 and 2.3 percent for shorter terms. For the mean reversion input, which is likewise unobservable, 10 percent was used. In our opinion, the values used constitute the best estimate in each case. If other values had been used for interest rate volatility, spread curve or mean reversion, the fair values calculated would have been different. These hypothetical deviations (sensitivities) are shown in the table below. In the reporting period, a net expense of EUR 15 million when translated into euros was recognized under the Level 3 measurement in other financial income/expense for unrealized losses for the options in the portfolio at the reporting date. In the reporting period, several options were exercised and the relevant bonds canceled prematurely. At the time of termination, the options and their total carrying amount of EUR 118 million when translated into euros were expensed and derecognized. For the development of the carrying amounts in the reporting period, please refer to the corresponding table on the previous page. The changes in value recognized in profit or loss in the reporting period were mainly attributable to fluctuations in the interest rates and historical interest rate volatilities in absolute terms that are relevant for measurement. Due to their distinctiveness, these instruments constitute a separate class of financial instruments. (XLS:) Download Sensitivitiesa of the carrying amounts of the financial assets and financial liabilities assigned to Level 3 depending on unobservable inputsmillions of € Derivative financial assets at fair value through profit or loss: termination rights embedded in bonds issued Derivative financial liabilities at fair value through profit or loss: energy forward agreements embedded in contracts a Change in the relevant input parameter assuming all other input parameters are unchanged. b Interest rate volatility shows the magnitude of fluctuations in interest rates over time. The larger the fluctuations, the higher the interest rate volatility. c The spread curve shows, for the respective maturities, the difference between the interest rates payable by T-Mobile US and the interest rates on U.S. government bonds. d Mean reversion describes the assumption that, after a change, an interest rate will revert to its average over time. The higher the selected value (mean reversion speed), the faster the interest rate will revert to its average in the measurement model. e Renewable energy credits is the term used for U.S. emission certificates. Interest rate volatilityb +1% 24 – Interest rate volatilityb –1% (23) – Spread curvec +1% (84) – Spread curvec –1% 129 – Mean reversiond +1% (4) – Mean reversiond –1% 6 – Future energy prices +10% – 35 Future energy prices –10% – (35) Future energy output +5% – 7 Future energy output –5% – (7) Future prices for renewable energy creditse +100% – 14 Future prices for renewable energy creditse from zero – (13) With a carrying amount of EUR 65 million when translated into euros, the derivatives without a hedging relationship assigned to Level 3 and carried under derivative financial liabilities relate to energy forward agreements embedded in contracts entered into by T-Mobile US. These agreements consist of two components: the energy forward agreement and the acquisition of renewable energy credits by T-Mobile US. The agreements were entered into with energy producers in 2017 and 2018, and will run for terms of between 12 and 15 years from the commencement of commercial operations. In the case of one energy forward agreement, commercial operations began at the end of 2017; with the others, commercial operations are set to begin in 2019. The respective settlement period of the energy forward agreement, which is accounted for separately as a derivative, also starts when the facility begins commercial operation. Under the energy forward agreements, T-Mobile US receives variable amounts based on the facility’s actual energy output and the then current energy prices, and pays fixed amounts per unit of energy generated throughout the term of the contract. The energy forward agreements are measured using valuation models because no observable market prices are available. The value of the derivative is materially influenced by the facility’s future energy output, for which T-Mobile US estimated a value of 1,781 gigawatt hours per year at the reporting date. The value of the derivatives is also materially influenced by future energy prices, which are not observable for the period beyond five years. Further, the value of the derivatives is materially influenced by the future prices for renewable energy credits, which are also not observable. For the unobservable portion of the term, T-Mobile US used on-peak energy prices of between EUR 22.49/MWh and EUR 39.57/MWh when translated into euros and off-peak prices of between EUR 15.09/MWh and EUR 28.80/MWh when translated into euros. An average on-peak/off-peak ratio of 56 percent was used. In our opinion, the values used constitute the best estimate in each case. If other values had been used for future energy prices, future energy output or future prices of renewable energy credits, the fair values calculated would have been different. These hypothetical deviations (sensitivities) are shown in the table above. In the reporting period, a net expense of EUR 19 million (when translated into euros) was recognized under the Level 3 measurement in other operating income/expense for unrealized losses for the derivatives. For the development of the carrying amounts in the reporting period, please refer to the corresponding table above. The market-price changes in the reporting period were largely attributable to changes in observable and unobservable energy prices and to interest rate effects. Due to their distinctiveness, these instruments constitute a separate class of financial instruments. Measurement of the derivatives on initial recognition resulted in a positive value from T-Mobile US’ perspective of EUR 135 million when translated into euros. In the view of T-Mobile US, the contracts were entered into at current market conditions, and the most appropriate parameters for the unobservable inputs were used for measurement purposes. The transaction price at inception was zero in each case. Since the unobservable inputs have a material influence on the measurement of the derivatives, the respective amount resulting from initial measurement was not carried on initial recognition. Instead, these amounts are amortized in profit or loss on a straight-line basis over the period of commercial energy generation (for a total amount of EUR 10 million per year when translated into euros). This amortization adjusts the effects from measuring the derivatives in each accounting period using the respective valuation models and updated parameters. All amounts from the measurement of the derivatives are presented in net terms in the statement of financial position (derivative financial assets/liabilities) and in the income statement (other operating income/expenses). The difference yet to be amortized in the income statement developed as follows during the reporting period: (XLS:) Download Energy forward agreements: development of the not-yet-amortized measurement amounts on initial recognitionmillions of € Measurement amount on initial recognition (carrying amount as of January 1, 2018) 112 Measurement amount on initial recognition (additions during the reporting period) 23 Measurement amounts amortized in profit or loss in prior periods – Measurement amounts amortized in profit or loss in the current reporting period (2) Currency translation adjustments (1) MEASUREMENT AMOUNTS NOT AMORTIZED AS OF JUNE 30, 2018 132 For the trade receivables, loans issued and other receivables assigned to Level 3, which are measured either at fair value through other comprehensive income or at fair value through profit or loss, the main factor in determining fair value is the credit risk of the relevant counterparties. If the default rates applied as of the reporting date had been 1 percent higher (lower) with no change in the reference variables, the fair values of the instruments would have been 1 percent lower (higher). The financial liabilities measured at fair value through profit or loss and assigned to Level 3 include derivative financial liabilities with a carrying amount of EUR 10 million resulting from an option granted to third parties in the prior-year period for the purchase of shares in an associate of Deutsche Telekom. The option was granted in connection with a sale of shares in this associate, and no notable fluctuations in value are expected. Due to its distinctiveness, this instrument constitutes a separate class of financial instruments. Disclosures on credit risk In line with the contractual provisions, in the event of insolvency all derivatives with a positive or negative fair value that exist with the respective counterparty are offset against each other, leaving a net receivable or liability. The net amounts are normally recalculated every bank working day and offset against each other. When the netting of the positive and negative fair values of all derivatives was positive from Deutsche Telekom’s perspective, Deutsche Telekom received unrestricted cash collateral from counterparties pursuant to collateral contracts in the amount of EUR 546 million (December 31, 2017: EUR 569 million). The credit risk was thus reduced by EUR 546 million (December 31, 2017: EUR 566 million) because, on the reporting date, the collateral received was offset by corresponding net derivative positions in the same amount. On the basis of these contracts, derivatives with a positive fair value and a total carrying amount of EUR 983 million as of the reporting date (December 31, 2017: EUR 966 million) had a maximum credit risk of EUR 67 million as of June 30, 2018 (December 31, 2017: EUR 28 million). There is no default risk on embedded derivatives held. For information on the amount not yet amortized from initial measurement of the energy forward agreement, please refer to the explanation above. When the netting of the positive and negative fair values of all derivatives was negative from Deutsche Telekom’s perspective, Deutsche Telekom provided cash collateral in the amount of EUR 509 million (December 31, 2017: EUR 504 million) to counterparties pursuant to collateral contracts. The net amounts are normally recalculated every bank working day and offset against each other. The cash collateral paid is offset by corresponding net derivative positions of EUR 487 million at the reporting date (December 31, 2017: EUR 889 million), which is why it was not exposed to any credit risks in this amount. The collateral paid is reported under originated loans and receivables within other financial assets. On account of its close connection to the corresponding derivatives, the collateral paid constitutes a separate class of financial assets. Likewise, the collateral received, which is reported under financial liabilities, constitutes a separate class of financial liabilities on account of its connection to the corresponding derivatives. No other significant agreements reducing the maximum exposure to the credit risks of financial assets existed. The maximum exposure to credit risk of the other financial assets thus corresponds to their carrying amounts.