Derivative Instruments - Nondesignated Hedging (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2017	Apr. 01, 2016	Apr. 03, 2015
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	$ (82)	$ 19	$ 1
Interest Rate Swap | Cost of services and Selling, general & administrative
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	2	0	(8)
Foreign Currency Forward | Other (income) expense, net
Derivative [Line Items]
Pretax gain (loss) on derivative instruments	$ (84)	$ 19	$ 9