CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Revenues	$ 4,089	$ 4,288	$ 12,257	$ 13,344
Costs of services (excludes depreciation and amortization and restructuring costs)	3,179	3,333	9,522	10,525
Selling, general and administrative (excludes depreciation and amortization and restructuring costs)	340	517	1,093	1,595
Depreciation and amortization	424	475	1,294	1,492
Restructuring costs	36	104	248	441
Interest expense	38	82	161	284
Interest income	(15)	(28)	(51)	(76)
Debt extinguishment costs	2	0	311	0
(Gain) loss on disposition of businesses	4	(2,046)	(373)	(2,046)
Other income, net	(85)	(127)	(290)	(318)
Total costs and expenses	3,923	2,310	11,915	11,897
Income before income taxes	166	1,978	342	1,447
Income tax expense	64	875	145	789
Net income	102	1,103	197	658
Less: net income attributable to non-controlling interest, net of tax	4	5	9	9
Net income attributable to DXC common stockholders	$ 98	$ 1,098	$ 188	$ 649
Income per common share:
Basic (in dollars per share)	$ 0.39	$ 4.32	$ 0.74	$ 2.55
Diluted (in dollars per share)	$ 0.38	$ 4.29	$ 0.73	$ 2.54