Derivative Instruments (Tables)

12 Months Ended

Mar. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of derivatives

The gross fair value of our derivative liabilities in interest rate swaps designated for hedge accounting were as follows:

(in millions)	Balance Sheets Line Item	March 31, 2020		March 31, 2019
Derivative liabilities:
Interest rate swaps	Other current liabilities	$	37	$	4
Interest rate swaps	Other liabilities	50		22
Total derivative liabilities		$	87	$	26