Hedging Activities (Tables)

6 Months Ended

Sep. 30, 2019

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	September 30, 2019						March 31, 2019
		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	$	17	$	—	$	81
Cross-currency swaps (current)	Prepaid expenses and other/Other accrued liabilities	49		12		355		—		18		—
Cross-currency swaps (non-current)	Other Noncurrent Assets/Liabilities	68		5		4,237		91		33		5,283
Total		$	134	$	17			$	108	$	51
Derivatives not designated for hedge accounting
Foreign exchange contracts (current)	Prepaid expenses and other	$	—	$	—	$	21	$	—	$	—	$	14
Foreign exchange contracts (current)	Other accrued liabilities	—		—		23		—		—		14
Total		$	—	$	—			$	—	$	—