CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Millions		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net (loss) income		$ (566)	$ 736	$ (146)
Other comprehensive (loss) income, net of taxes:
Foreign currency translation adjustments, net of tax	[1]	(336)	(86)	300
Cash flow hedges adjustments, net of tax	[2]	(17)	11	19
Available-for-sale securities, net of tax	[3]	0	0	(9)
Pension and other post-retirement benefit plans, net of tax:
Prior service cost, net of tax	[4]	(2)	9	7
Amortization of prior service cost, net of tax	[5]	(36)	(6)	(13)
Pension and other post-retirement benefit plans, net of tax		(38)	3	(6)
Other comprehensive (loss) income, net of taxes		(391)	(72)	304
Comprehensive (loss) income		(957)	664	158
Less: comprehensive (loss) income attributable to non-controlling interest		0	29	6
Comprehensive (loss) income attributable to DXC common stockholders		$ (957)	$ 635	$ 152

[1] Tax expense (benefit) related to foreign currency translation adjustments was $2, $5, and $(27) for the fiscal years ended March 31, 2023, March 31, 2022, and March 31, 2021, respectively.

[2] Tax (benefit) expense related to cash flow hedge adjustments was $(6), $2, and $6 for the fiscal years ended March 31, 2023, March 31, 2022, and March 31, 2021, respectively.

[3] Tax benefit related to available-for-sale securities was $0, $0, and $1 for the fiscal years ended March 31, 2023, March 31, 2022, and March 31, 2021, respectively.

[4] Tax (benefit) expense related to prior service costs was $(1), $2, and $2 for the fiscal years ended March 31, 2023, March 31, 2022, and March 31, 2021, respectively.

[5] Tax benefit related to amortization of prior service costs was $15, $2, and $4 for the fiscal years ended March 31, 2023, March 31, 2022, and March 31, 2021, respectively.