CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (unaudited) - USD ($) $ in Millions		Total		Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive (Loss) Income	Treasury Stock		Total DXC Equity	Non-Controlling Interest
Balance (in shares) (As Previously Reported) at Apr. 01, 2016				148,747,000
Balance (in shares) at Apr. 01, 2016				148,747,000
Balance, beginning (As Previously Reported) at Apr. 01, 2016		$ 2,032		$ 149	$ 2,439	$ 33	$ (111)	$ (485)		$ 2,025	$ 7
Balance, beginning (Adjustment) at Apr. 01, 2016	[1]	0		(147)	147
Balance, beginning at Apr. 01, 2016		2,032		$ 2	2,586	33	(111)	(485)		2,025	7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		38				25				25	13
Other comprehensive income (loss)		(175)					(175)			(175)
Share-based compensation expense		54			54					54
Acquisition of treasury stock		(11)						(11)		(11)
Stock option exercises and other common stock transactions (in shares)				2,855,000
Stock option exercises and other common stock transactions		49			49					49
Dividends declared		(59)				(59)				(59)
Non-controlling interest distributions and other		(13)									(13)
Non-controlling interest from acquisition		281									281
Divestiture of NPS		(2)				(2)				(2)
Balance (in shares) at Dec. 30, 2016				151,602,000
Balance, ending at Dec. 30, 2016		$ 2,194		$ 2	2,689	(3)	(286)	(496)		1,906	288
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares	[2]	0
Balance (in shares) (As Previously Reported) at Mar. 31, 2017				151,932,000
Balance (in shares) (Adjustment) at Mar. 31, 2017	[1]			(10,633,000)
Balance (in shares) at Mar. 31, 2017				141,299,000
Balance, beginning (As Previously Reported) at Mar. 31, 2017		$ 2,166		$ 152	2,565	(170)	(162)	(497)	[3]	1,888	278
Balance, beginning (Adjustment) at Mar. 31, 2017	[1]	0		(151)	(346)			497	[3]
Balance, beginning at Mar. 31, 2017		2,166	[2]	$ 1	2,219	(170)	(162)	0	[3]	1,888	278
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Business acquired in purchase, net of issuance costs (in shares)	[4]			141,741,000
Business acquired in purchase, net of issuance costs	[4]	9,905		$ 2	9,848					9,850	55
Net income		1,217				1,191				1,191	26
Other comprehensive income (loss)		52					44			44	8
Share-based compensation expense		74			74					74
Acquisition of treasury stock		(83)						(83)	[3]	(83)
Share repurchase program (in shares)				(842,000)
Share repurchase program		(66)			(36)	(30)				(66)
Stock option exercises and other common stock transactions (in shares)				4,356,000
Stock option exercises and other common stock transactions		96			96					96
Dividends declared		(157)				(157)				(157)
Non-controlling interest distributions and other		(2)									(2)
Balance (in shares) at Dec. 31, 2017				286,554,000
Balance, ending at Dec. 31, 2017		$ 13,202		$ 3	$ 12,201	$ 834	$ (118)	$ (83)	[3]	$ 12,837	$ 365
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Treasury shares		1,000,856

[1] Certain prior year amounts were adjusted to retroactively reflect the legal capital of DXC.

[2] Certain prior year amounts were adjusted to retroactively reflect the legal capital of DXC.

[3] 1,000,856 treasury shares as of December 31, 2017

[4] See Note 3 - "Acquisitions"