Income Taxes (Details) € in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016 USD ($)	Jul. 04, 2015	Jul. 02, 2016 USD ($)	Jul. 04, 2015	Jul. 02, 2016 EUR (€)	Apr. 02, 2016 EUR (€)	Jan. 02, 2016 USD ($)
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 405		$ 405				$ 338
Accrued interest and penalties	$ 56		$ 56				$ 58
Effective income tax rate reconciliation, percent	11.90%	4.10%	18.00%	10.60%
Special charges, acquisition-related costs, adjustments to contingent consideration liabilities and discrete tax items	1.50%	13.20%	(5.10%)	6.50%
Liability for uncertain tax positions	$ 48		$ 48		€ 43	€ 46