Segment Reporting Net Sales by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2015	Sep. 28, 2014	Sep. 27, 2015	Sep. 28, 2014
Segment Reporting Information [Line Items]
Net sales	$ 6,120	$ 2,594	$ 11,214	$ 8,123
United States
Segment Reporting Information [Line Items]
Net sales	4,298	834	6,043	2,643
Canada
Segment Reporting Information [Line Items]
Net sales	539	148	804	474
Europe
Segment Reporting Information [Line Items]
Net sales	599	696	1,845	2,225
Rest of World
Segment Reporting Information [Line Items]
Net sales	$ 684	$ 916	$ 2,522	$ 2,781