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Hedging Activities | 9 Months Ended
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Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Hedging Activities | Hedging Activities In the normal course of business, we are exposed to interest rate and foreign exchange rate fluctuations. At times, we limit these risks through the use of derivatives such as interest rate swaps, cross currency swaps and foreign currency forward contracts. In accordance with our policy, derivatives are only used for hedging purposes. We do not use derivatives for trading or speculative purposes. Foreign currency exchange risk We conduct our business worldwide in U.S. dollars and the functional currencies of our foreign subsidiaries, including Euro, British pound sterling and Canadian dollar. Changes in foreign currency exchange rates could have a material adverse impact on our financial results that are reported in U.S. dollars. We are also exposed to foreign currency exchange rate risk related to our foreign subsidiaries, including intercompany loans denominated in non-functional currencies. We have certain foreign currency exchange rate risk programs that use foreign currency forward contracts and cross currency swaps. These forward contracts and cross currency swaps are generally used to offset the potential income statement effects from intercompany loans denominated in non-functional currencies. These programs reduce but do not entirely eliminate foreign exchange rate risk. Derivatives Designated as Hedges At December 31, 2016 and March 31, 2016, we had forward contracts to hedge the U.S. dollar against cash flows denominated in Canadian dollars with total gross notional values of $323 million, which were designated as cash flow hedges. These contracts will mature between March 2017 and March 2020. From time to time, we enter into cross currency swaps to convert fixed-rate foreign currency denominated borrowings to fixed-rate U.S. dollar borrowings. For our cross currency swap transactions, we agree with another party to exchange, at specified intervals, one currency for another currency at a fixed exchange rate, generally set at inception, calculated by reference to agreed upon notional amounts. These cross currency swaps are designed to reduce the income statement effects from fluctuations in foreign exchange rates and have been designated as cash flow hedges. At December 31, 2016 and March 31, 2016, we had cross currency swaps with total gross notional amounts of approximately $1,839 million and $546 million, which are designated as cash flow hedges. These swaps will mature between February 2018 and December 2022. For forward contracts and currency swaps that are designated as cash flow hedges, the effective portion of changes in the fair values of hedges is recorded into accumulated other comprehensive income and reclassified into earnings in the same period in which the hedged transaction affects earnings. Changes in fair values representing hedge ineffectiveness are recognized in current earnings. Gains or losses on these hedges recorded in other comprehensive income and earnings were not material during the third quarters and first nine months of 2017 and 2016. Derivatives Not Designated as Hedges At December 31, 2016, we had a number of forward contracts to primarily hedge the U.S. dollar against cash flows denominated in Canadian dollars with total gross notional value of $882 million. These contracts will mature through January 2017 and none of these contracts were designated for hedge accounting. Gains or losses from these contracts were not material for the third quarter and first nine months of 2017. We also have a number of forward contracts to primarily hedge the Euro against cash flows denominated in British pound sterling and other European currencies. At December 31, 2016 and March 31, 2016, the total gross notional amounts of these contracts were $99 million and $876 million. These contracts will mature through May 2017 and none of these contracts were designated for hedge accounting. Changes in the fair values of contracts not designated as hedges are recorded directly into earnings and accordingly, net losses of $1 million and net gains of $4 million for the third quarter and first nine months of 2017 and net losses of $24 million and $2 million for the third quarter and first nine months of 2016 were recorded within operating expenses. The gains or losses from these contracts are largely offset by changes in the value of the underlying intercompany foreign currency loans. Information regarding the fair value of derivatives on a gross basis is as follows:
| Balance Sheet Caption | December 31, 2016 |  | March 31, 2016
| Fair Value of Derivative | U.S. Dollar Notional |  | Fair Value of Derivative | U.S. Dollar Notional
(In millions) | Asset | Liability |  | Asset | Liability
Derivatives designated for hedge accounting |  |  |  |  |  |  |  |
Foreign exchange contracts (current) | Prepaid expenses and other | $ | 18 |  | $ | — |  | $ | 80 |  |  | $ | 16 |  | $ | — |  | $ | 80 |
Foreign exchange contracts (non-current) | Other Noncurrent Assets | 51 |  | — |  | 243 |  |  | 46 |  | — |  | 243 |
Cross currency swaps (non-current) | Other Noncurrent Assets/Liabilities | 130 |  | — |  | 1,839 |  |  | — |  | 8 |  | 546 |
Total |  | $ | 199 |  | $ | — |  |  |  | $ | 62 |  | $ | 8 |  |
Derivatives not designated for hedge accounting |  |  |  |  |  |  |  |
Foreign exchange contracts (current) | Prepaid expenses and other | $ | 5 |  | $ | — |  | $ | 943 |  |  | $ | 23 |  | $ | — |  | $ | 680 |
Foreign exchange contracts (current) | Other accrued liabilities | — |  | — |  | 38 |  |  | — |  | — |  | 196 |
Total |  | $ | 5 |  | $ | — |  |  |  | $ | 23 |  | $ | — |  |
Refer to Financial Note 15, "Fair Value Measurements," for more information on these recurring fair value measurements.

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- Definition The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6441202&loc=d3e80720-113993 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41620-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624163-113959 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579240-113959 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624177-113959 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41641-113959 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624258-113959 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708775-113959 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5708773-113959 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5580258-113959 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624181-113959 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 25 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=64837297&loc=d3e41638-113959 Reference 19: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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