Hedging Activities (Tables)

9 Months Ended

Dec. 31, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of information regarding the 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	December 31, 2017						March 31, 2017
		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	$	14	$	—	$	81	$	17	$	—	$	81
Foreign exchange contracts (non-current)	Other Noncurrent Assets	27		—		162		32		—		162
Cross currency swaps (current)	Prepaid expenses and other	—		—		307		17		—		174
Cross currency swaps (non-current)	Other Noncurrent Assets/Liabilities	—		163		3,104		90		—		2,489
Total		$	41	$	163			$	156	$	—
Derivatives not designated for hedge accounting
Foreign exchange contracts (current)	Prepaid expenses and other	$	—	$	—	$	28	$	1	$	—	$	198
Foreign exchange contracts (current)	Other accrued liabilities	—		—		6		—		—		37
Total		$	—	$	—			$	1	$	—