Hedging Activities (Tables)

12 Months Ended

Mar. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of information regarding fair value of derivatives on a gross basis

Information regarding the fair value of derivatives on a gross basis is as follows:

	Balance Sheet Caption	March 31, 2017						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	$	17	$	—	$	81	$	16	$	—	$	80
Foreign exchange  contracts (non-current)	Other Noncurrent Assets	32		—		162		46		—		243
Cross currency  swaps (current)	Prepaid expenses and other	17		—		174		—		—		—
Cross currency  swaps (non-current)	Other Noncurrent Assets/Liabilities	90		—		2,489		—		8		546
Total		$	156	$	—			$	62	$	8
Derivatives not designated for hedge accounting
Foreign exchange  contracts (current)	Prepaid expenses and other	$	1	$	—	$	198	$	23	$	—	$	680
Foreign exchange  contracts (current)	Other accrued liabilities	—		—		37		—		—		196
Total		$	1	$	—			$	23	$	—