Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($) $ in Millions	Apr. 01, 2017	Dec. 31, 2016
Assets:
Available-for-sale securities:	$ 55	$ 56
Recurring basis | Estimate of Fair Value, Fair Value Disclosure | Government, agency, and government-sponsored enterprise obligations
Assets:
Available-for-sale securities:	50	51
Recurring basis | Estimate of Fair Value, Fair Value Disclosure | Corporate bonds
Assets:
Available-for-sale securities:	5	5
Recurring basis | Estimate of Fair Value, Fair Value Disclosure | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	2	9
Liabilities:
Foreign exchange derivative contracts	3	32
Recurring basis | Level 2 | Government, agency, and government-sponsored enterprise obligations
Assets:
Available-for-sale securities:	50	51
Recurring basis | Level 2 | Corporate bonds
Assets:
Available-for-sale securities:	5	5
Recurring basis | Level 2 | Foreign exchange contracts
Assets:
Foreign exchange derivative contracts	2	9
Liabilities:
Foreign exchange derivative contracts	$ 3	$ 32