Commitments and Contingencies 2 (Details) - USD ($) $ in Millions		12 Months Ended
	May. 29, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Rent expense, net		$ 142	$ 144	$ 144
Future purchase commitments		268
Future purchase commitments due within five years		244
Alleged damages suffered	excess of $100 million
Minimum
Loss Contingencies [Line Items]
Loss contingency, Estimate of possible loss		0
Maximum
Loss Contingencies [Line Items]
Loss contingency, Estimate of possible loss		$ 45