CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 30, 2016	Dec. 31, 2017	Dec. 30, 2016
Income Statement [Abstract]
Revenues	$ 6,186	$ 1,917	$ 18,262	$ 5,718
Costs of services (excludes depreciation and amortization and restructuring costs)	4,521	1,347	13,621	4,131
Selling, general, and administrative (excludes depreciation and amortization and restructuring costs)	475	333	1,557	931
Depreciation and amortization	481	161	1,379	494
Restructuring costs	213	3	595	85
Interest expense	77	33	231	87
Interest income	(27)	(8)	(59)	(26)
Other expense (income), net	8	(2)	(72)	3
Total costs and expenses	5,748	1,867	17,252	5,705
Income before income taxes	438	50	1,010	13
Income tax (benefit) expense	(341)	13	(207)	(25)
Net income	779	37	1,217	38
Less: net income attributable to non-controlling interest, net of tax	3	6	26	13
Net income attributable to DXC common stockholders	$ 776	$ 31	$ 1,191	$ 25
Income per common share:
Basic (in dollars per share)	$ 2.72	$ 0.22	$ 4.18	$ 0.18
Diluted (in dollars per share)	2.68	0.21	4.11	0.17
Cash dividend per common share (in dollars per share)	$ 0.18	$ 0.14	$ 0.54	$ 0.42