Income Taxes Income Taxes - Reconciliation of Statutory Federal Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
U.S. federal statutory rate	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent	4.50%	2.30%	8.60%
State and local income taxes, net of federal income tax	0.90%	1.10%	1.70%
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Percent	(24.50%)	(21.20%)	(29.80%)
Foreign valuation allowances	2.10%	1.00%	2.30%
Adjustments for uncertain tax positions	(0.20%)	(12.90%)	1.20%
Restructuring Charges	2.30%	0.00%	0.00%
Tax credits and other	(0.10%)	0.60%	(4.50%)
Unremitted earnings, net of foreign tax credits	8.50%	(1.00%)	(4.60%)
Effective rate	28.50%	4.90%	9.90%