CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenues	$ 4,554	$ 4,851	$ 9,056	$ 9,741
Costs of services (excludes depreciation and amortization and restructuring costs)	3,563	3,679	7,192	7,301
Selling, general, and administrative (excludes depreciation and amortization and restructuring costs)	539	489	1,078	996
Depreciation and amortization	525	467	1,017	937
Goodwill impairment losses	0	2,887	0	2,887
Restructuring costs	265	32	337	174
Interest expense	96	104	202	195
Interest income	(25)	(67)	(48)	(97)
Gain on arbitration award	0	(632)	0	(632)
Other income, net	(103)	(109)	(191)	(227)
Total costs and expenses	4,860	6,850	9,587	11,534
Loss before income taxes	(306)	(1,999)	(531)	(1,793)
Income tax (benefit) expense	(60)	116	(86)	154
Net loss	(246)	(2,115)	(445)	(1,947)
Less: net (loss) income attributable to non-controlling interest, net of tax	(2)	4	4	9
Net loss attributable to DXC common stockholders	$ (244)	$ (2,119)	$ (449)	$ (1,956)
Loss per common share:
Basic (in dollars per share)	$ (0.96)	$ (8.19)	$ (1.77)	$ (7.44)
Diluted (in dollars per share)	$ (0.96)	$ (8.19)	$ (1.77)	$ (7.44)