Stockholders' Equity Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 28, 2014		Mar. 29, 2013		Mar. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments (loss), Before tax	$ (71)		$ (71)		$ (123)
Foreign currency translation adjustments (loss), Tax (Expense) Benefit	(2)		(12)		(1)
Foreign currency translation adjustments (loss), Net of tax	(73)		(83)		(124)
Pension and other post-retirement benefit plans adjustments:
Net actuarial gain, Before tax	303	[1]	(298)		(473)
Net actuarial gain, Tax (Expense) Benefit	(76)	[1]	38		150
Net unamortized gain (loss), net of tax	227	[1]	(260)		(323)
Prior service cost, Before Tax	265	[1]	27		(10)
Prior service credit, Tax (Expense) Benefit	0	[1]	(8)		6
Prior service cost, Net of tax	265	[1]	19		(4)
Amortization of Transition Obligation, Before tax	1	[2]	1	[2]	2	[2]
Amortization of Transition Obligation, Tax (Expense) Benefit	0	[2]	0	[2]	0	[2]
Amortization of Transition Obligation, Net of Tax	1	[2]	1	[2]	2	[2]
Amortization of Prior Service (Cost), before Tax	(5)	[2]	(1)	[2]	(3)	[2]
Amortization of Prior Service (Cost), Tax	1	[2]	0	[2]	1	[2]
Amortization of Prior Service (Cost), Net of Tax	(4)	[2]	(1)	[2]	(2)	[2]
Amortization of Net Actuarial Gain, before Tax	92	[2]	83	[2]	65	[2]
Amortization of Net Gain, Tax	(26)	[2]	(25)	[2]	(20)	[2]
Amortization of Net Gain, Net of Tax	66	[2]	58	[2]	45	[2]
Foreign currency exchange (loss) gain, before Tax	(9)		(6)		4
Foreign currency exchange (loss) gain, Tax	1		(8)		(1)
Foreign currency exchange (loss) gain, Net of Tax	(8)		(14)		3
Total pension and other post-retirement benefit plans gain, before Tax	647		(194)		(415)
Total pension and other post-retirement benefit plans gain, Tax	(100)		(3)		136
Pension and other postretirement benefit plans, net of tax	547		(197)		(279)
Total other comprehensive income gain, Before Tax	576		(265)		(538)
Total other comprehensive income gain, Tax	(102)		(15)		135
Other comprehensive income (loss), net of tax	$ 474		$ (280)		$ (403)

[1] Represents the result of remeasurement of the pension liability associated with plans in the U.K. and Switzerland, and remeasurement of ATD's pension and retiree medical plans due to CSC's divestiture of ATD during the second quarter of fiscal 2014 (see Note 14).

[2] Represents current period reclassification out of accumulated other comprehensive loss. The reclassified amounts are included in the net periodic pension cost and net periodic post-retirement benefit cost (see Note 14).