Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Line Items]
Changes in valuation allowance balances	$ 58	$ 9
Net income impacted due to change in valuation allowances	63	0
Tax loss carryforward, U.S. and non-U.S.	12
Tax loss carryforward, U.S. and non-U.S., set to expire	0
Amount of undistributed foreign earnings	9,030
Cash payments for income taxes	1,150	1,170	$ 1,100
Unrecognized Tax Benefits	243	84	108	$ 91
Amount of deferred tax assets possibly to be realized	12	12
Foreign Tax Authority
Income Tax Disclosure [Line Items]
Benefits from tax holidays	$ 30	$ 50	$ 44
Tax holiday, review time period	5 years