Income Taxes Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	$ 63	$ 49	$ 46
Non-U.S.	300	236	205
U.S. state and local	4	(1)	9
Total current	367	284	260
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
U.S. federal	(98)	(12)	(32)
Non-U.S.	(26)	(7)	29
U.S. state and local	(1)	(2)	(2)
Total deferred	(125)	(21)	(5)
Total income tax expense	242	263	255
Adjustment to Additional Paid in Capital, Income Tax Effect from Share-based Compensation, Net	0	11	9
Income Taxes Paid or Withheld	$ 312	$ 292	$ 266