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Hedging Activities - Schedule of Information Regarding Fair Value of Derivatives on a Gross Basis (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Mar. 31, 2017
--- | --- | ---
Derivatives designated for hedge accounting |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | $ 29 | $ 156
Fair value of derivative liability, gross fair value | 229 | 0
Derivatives not designated for hedge accounting |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 0 | 1
Fair value of derivative liability, gross fair value | 0 | 0
Foreign Exchange Contract | Derivatives designated for hedge accounting | Prepaid expenses and other |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 15 | 17
Fair value of derivative liability, gross fair value | 0 | 0
Derivative asset, notional amount | 81 | 81
Foreign Exchange Contract | Derivatives designated for hedge accounting | Other Noncurrent Assets |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 14 | 32
Fair value of derivative liability, gross fair value | 0 | 0
Derivative asset, notional amount | 81 | 162
Foreign Exchange Contract | Derivatives not designated for hedge accounting | Prepaid expenses and other |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 0 | 1
Fair value of derivative liability, gross fair value | 0 | 0
Derivative asset, notional amount | 13 | 198
Foreign Exchange Contract | Derivatives not designated for hedge accounting | Other accrued liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 0 | 0
Fair value of derivative liability, gross fair value | 0 | 0
Derivative liability, notional amount | 16 | 37
Currency Swap | Derivatives designated for hedge accounting | Prepaid expenses and other |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 0 | 17
Fair value of derivative liability, gross fair value | 7 | 0
Derivative asset, notional amount | 504 |
Derivative liability, notional amount |  | 174
Currency Swap | Derivatives designated for hedge accounting | Other Noncurrent Assets/Liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Fair value of derivative asset, gross fair value | 0 | 90
Fair value of derivative liability, gross fair value | 222 | 0
Derivative asset, notional amount | $ 3,508 |
Derivative liability, notional amount |  | $ 2,489

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=82924980&loc=SL51823488-111719 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82849420&loc=SL20226000-175313 + Details
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