Equity - Narrative (Details) - USD ($) shares in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 03, 2015	Sep. 27, 2014	Oct. 03, 2015	Sep. 27, 2014	Jan. 03, 2015	Feb. 28, 2014
Equity [Abstract]
Anti-dilutive potential common shares excluded from reconciliation	3	0	3	5
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)			6	11
Common stock repurchased			$ 381,000,000	$ 690,000,000	$ 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