Derivative Instruments - Nondesignated Hedging (Details) (Not Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 03, 2015	Mar. 28, 2014	Mar. 29, 2013
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	$ (3)	$ (15)	$ (17)
Interest Rate Swap | Cost Of Services And Selling, General And Administrative Expenses
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	8	0	0
Foreign Exchange Contract | Other Operating Income (Expense)
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	$ (11)	$ (15)	$ (17)