Derivative Instruments (Nondesignated Hedging) (Details) (Not Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 03, 2014	Sep. 27, 2013	Oct. 03, 2014	Sep. 27, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, pretax amounts affecting income	$ (5)	$ (17)	$ 0	$ (16)
Total return swaps [Member] | Cost of Services and Selling, General and Administrative Expenses [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, pretax amounts affecting income	0	0	4	0
Foreign Currency Forward and Option Contracts [Member] | Other Income (Expense) [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, pretax amounts affecting income	$ (5)	$ (17)	$ (4)	$ (16)