Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2016	Jul. 03, 2015	Jul. 01, 2016	Jul. 03, 2015
Operating Loss Carryforwards [Line Items]
Effective tax rate (percentage)	31.70%	28.80%	31.90%	20.00%
Tax Audits And Reviews
Operating Loss Carryforwards [Line Items]
Liabilities for uncertain tax positions	$ 11		$ 11
Other long-term liabilities	5		5
Unrecognized tax benefits	7		7
Accounting Standards Update 2016-09, Excess Tax Benefit Component | New Accounting Pronouncement, Early Adoption, Effect
Operating Loss Carryforwards [Line Items]
Effective income tax rate reconciliation, share-based compensation, excess tax benefit, amount	$ 3		$ 7