Equity - Narrative (Details) - USD ($) shares in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Jan. 03, 2015	Feb. 28, 2014
Equity [Abstract]
Anti-dilutive potential common shares excluded from reconciliation	3	0	2	4
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)			4	6
Common stock repurchased			$ 285,000,000	$ 329,000,000	$ 690,000,000
February 2014 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount						$ 1,500,000,000.0