Restatement and Adjustment of Consolidated Financial Statements - Consolidated Statement of Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 28, 2014		Mar. 29, 2013	Mar. 30, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)	$ 968		$ 779	$ (602)
Foreign currency translation adjustments, net	(81)		(92)	(122)
Net unamortized gain (loss), net of tax	0		0	0
Prior service credit (cost), net of tax	265	[1]	19	(4)
Amortization of transition obligation, net	1		1	2
Amortization of prior service cost, net	(4)		0	(2)
Amortization of net actuarial gain, net	0		0	0
Foreign currency exchange (loss) gain, net of tax	2		(8)	(2)
Pension and other postretirement benefit plans, net of tax	264		12	(6)
Other Comprehensive Income (Loss), Net of Tax	183		(80)	(128)
Comprehensive income (loss)	1,151		699	(730)
Less: comprehensive income (loss) attributable to noncontrolling interest	30		19	14
Comprehensive income (loss) attributable to CSC common stockholders	1,121		680	(744)
Pension and Intercompany Accounting Policy Change [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)	278		(200)	(278)
Foreign currency translation adjustments, net	(8)		(9)	(5)
Net unamortized gain (loss), net of tax	(227)		260	323
Prior service credit (cost), net of tax	0		0	0
Amortization of transition obligation, net	0		0	0
Amortization of prior service cost, net	0		1	0
Amortization of net actuarial gain, net	(66)		(58)	(45)
Foreign currency exchange (loss) gain, net of tax	10		6	(5)
Pension and other postretirement benefit plans, net of tax	(283)		209	273
Other Comprehensive Income (Loss), Net of Tax	(291)		200	268
Comprehensive income (loss)	(13)		0	(10)
Less: comprehensive income (loss) attributable to noncontrolling interest	9		20	(3)
Comprehensive income (loss) attributable to CSC common stockholders	(22)		(20)	(7)
Miscellaneous errors [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)				(324)
Foreign currency translation adjustments, net				(117)
Net unamortized gain (loss), net of tax				(323)
Prior service credit (cost), net of tax				(4)
Amortization of transition obligation, net				2
Amortization of prior service cost, net				(2)
Amortization of net actuarial gain, net				45
Foreign currency exchange (loss) gain, net of tax				3
Pension and other postretirement benefit plans, net of tax				(279)
Other Comprehensive Income (Loss), Net of Tax				(396)
Comprehensive income (loss)				(720)
Less: comprehensive income (loss) attributable to noncontrolling interest				17
Comprehensive income (loss) attributable to CSC common stockholders				(737)
Miscellaneous errors [Member] | Scenario, Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)	690		979	(4,225)
Foreign currency translation adjustments, net	(73)		(83)	(124)
Net unamortized gain (loss), net of tax	227		(260)	(323)
Prior service credit (cost), net of tax	265		19	(4)
Amortization of transition obligation, net	1		1	2
Amortization of prior service cost, net	(4)		(1)	(2)
Amortization of net actuarial gain, net	66		58	45
Foreign currency exchange (loss) gain, net of tax	(8)		(14)	3
Pension and other postretirement benefit plans, net of tax	547		(197)	(279)
Other Comprehensive Income (Loss), Net of Tax	474		(280)	(403)
Comprehensive income (loss)	1,164		699	(4,628)
Less: comprehensive income (loss) attributable to noncontrolling interest	21		(1)	17
Comprehensive income (loss) attributable to CSC common stockholders	1,143		700	(4,645)
Miscellaneous errors [Member] | Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net income (loss)				3,901
Foreign currency translation adjustments, net				7
Net unamortized gain (loss), net of tax				0
Prior service credit (cost), net of tax				0
Amortization of transition obligation, net				0
Amortization of prior service cost, net				0
Amortization of net actuarial gain, net				0
Foreign currency exchange (loss) gain, net of tax				0
Pension and other postretirement benefit plans, net of tax				0
Other Comprehensive Income (Loss), Net of Tax				7
Comprehensive income (loss)				3,908
Less: comprehensive income (loss) attributable to noncontrolling interest				0
Comprehensive income (loss) attributable to CSC common stockholders				$ 3,908

[1] Represents the result of remeasurement of the pension liability primarily associated with plans in the U.K. (see Note 16).