CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (unaudited) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (199)	$ 168
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments, net of tax benefit of $7 and $12	(3)	(135)
Cash flow hedges adjustments, net of tax expense of $3 and $0	11	4
Available-for-sale securities, net of tax expense of $0 and $1	4	1
Pension and other post-retirement benefit plans, net of tax:
Amortization of prior service cost, net of tax benefit of $1 and $0	(9)	(1)
Pension and other post-retirement benefit plans, net of tax	(9)	(1)
Other comprehensive income (loss), net of taxes	3	(131)
Comprehensive (loss) income	(196)	37
Less: comprehensive income (loss) attributable to non-controlling interest	5	(19)
Comprehensive (loss) income attributable to DXC common stockholders	$ (201)	$ 56