Income Taxes - Effective Income Tax Rate on Income Before Income Taxes (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. statutory tax rate	35.00%	35.00%	35.00%
Non-U.S. income taxed at other than 35%	(3.20%)	(2.20%)	(1.70%)
State and local income taxes	0.90%	1.20%	1.10%
U.S. tax on non-U.S. earnings	(3.20%)	7.20%	(1.70%)
Valuation allowance	7.10%	(4.90%)	3.40%
U.S. tax incentives	(6.60%)	(0.80%)	(0.00%)
Other	(3.50%)	(1.50%)	(0.20%)
Effective tax rate	26.50%	34.00%	35.90%