Hedging Activities - Schedule of Information Regarding Fair Value of Derivatives on a Gross Basis (Details) - USD ($) $ in Millions	Mar. 31, 2017	Mar. 31, 2016
Derivatives designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	$ 156	$ 62
Fair value of derivative liability, gross fair value	0	8
Derivatives not designated for hedge accounting
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	1	23
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	17	16
Fair value of derivative liability, gross fair value	0	0
Derivative asset, notional amount	81	80
Foreign Exchange Contract \| Derivatives designated for hedge accounting \| Other Noncurrent Assets
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	32	46
Fair value of derivative liability, gross fair value	0	0
Derivative asset, notional amount	162	243
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	1	23
Fair value of derivative liability, gross fair value	0	0
Derivative asset, notional amount	198	680
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	37	196
Currency Swap \| Derivatives designated for hedge accounting \| Prepaid expenses and other
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	17	0
Fair value of derivative liability, gross fair value	0	0
Derivative asset, notional amount	174
Derivative liability, notional amount		0
Currency Swap \| Derivatives designated for hedge accounting \| Other Noncurrent Assets/Liabilities
Derivatives, Fair Value [Line Items]
Fair value of derivative asset, gross fair value	90	0
Fair value of derivative liability, gross fair value	0	8
Derivative asset, notional amount	$ 2,489
Derivative liability, notional amount		$ 546

Nominal or face amount used to calculate payments on the derivative asset.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5579245-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6519104

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Nominal or face amount used to calculate payments on the derivative liability.

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