CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) (unaudited) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss		$ (246)	$ (2,115)	$ (445)	$ (1,947)
Other comprehensive loss, net of taxes:
Foreign currency translation adjustments, net of tax	[1]	33	(71)	30	(206)
Cash flow hedges adjustments, net of tax	[2]	7	(2)	18	2
Available-for-sale securities, net of tax	[3]	1	1	5	2
Pension and other post-retirement benefit plans, net of tax:
Amortization of prior service cost, net of tax	[4]	(1)	(3)	(10)	(4)
Pension and other post-retirement benefit plans, net of tax		(1)	(3)	(10)	(4)
Other comprehensive income (loss), net of taxes		40	(75)	43	(206)
Comprehensive loss		(206)	(2,190)	(402)	(2,153)
Less: comprehensive income (loss) attributable to non-controlling interest		1	6	6	(13)
Comprehensive loss attributable to DXC common stockholders		$ (207)	$ (2,196)	$ (408)	$ (2,140)

[1] Tax (benefit) expense related to foreign currency translation adjustments was $(15) and $(22) for the three and six months ended September 30, 2020, respectively, and $25 and $13 for the three and six months ended September 30, 2019, respectively.

[2] Tax expense related to cash flow hedge adjustments was $3 and $6 for the three and six months ended September 30, 2020, respectively. There was no tax expense related to cash flow hedge adjustments during the three and six months ended September 30, 2019.

[3] There was no tax expense related to available-for-sale securities during the three and six months ended September 30, 2020. Tax expense related to available-for-sale securities was $0 and $1 for the three and six months ended September 30, 2019, respectively.

[4] Tax benefit related to amortization of prior service costs was $1 and $2 for the three and six months ended September 30, 2020, respectively, and $1 and $1 for the three and six months ended September 30, 2019, respectively.