Derivative Instruments (Tables)

9 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following tables present the fair values of derivative instruments included in the balance sheets:

	Derivative Assets
		As of
(in millions)	Balance Sheet Line Item	December 31, 2018		March 31, 2018
Derivatives designated for hedge accounting:
Interest rate swaps	Other assets	$	—	$	6
Foreign currency forward contracts	Other current assets	1		14
Total fair value of derivatives designated for hedge accounting		$	1	$	20
Derivatives not designated for hedge accounting:
Foreign currency forward contracts	Other current assets	$	7	$	4
Total fair value of derivatives not designated for hedge accounting		$	7	$	4

	Derivative Liabilities
		As of
(in millions)	Balance Sheet Line Item	December 31, 2018		March 31, 2018
Derivatives designated for hedge accounting:
Foreign currency forward contracts	Accrued expenses and other current liabilities	$	8	$	3
Total fair value of derivatives designated for hedge accounting:		$	8	$	3
Derivatives not designated for hedge accounting:
Foreign currency forward contracts	Accrued expenses and other current liabilities	$	6	$	6
Total fair value of derivatives not designated for hedge accounting		$	6	$	6