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Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Effective Income Tax Rate Reconciliation [Abstract]      
U.S. Federal income tax rate (35.00%) (35.00%) 35.00%
State and local taxes, net of Federal income tax benefit (0.60%) (1.80%) 0.10%
Foreign operations tax effect 3.10% (2.70%) (41.40%)
Research & experimentation tax credits (1.00%) (3.90%) (0.80%)
Valuation allowance 25.20% 104.60% 0.70%
Tax contingencies (0.20%) 1.40% 0.60%
Other, principally non-tax deductible items 1.80% (12.20%) 1.60%
Prior period items 0.60% 7.50% 0.00%
Effective income tax rate (6.10%) 57.90% (4.20%)
Foreign Tax Authority      
Effective Income Tax Rate Reconciliation [Abstract]      
Effective income tax rate reconciliation, tax holiday $ 11.6 $ 16.8 $ 32.0
Income tax holiday benefit (usd per share) $ 0.13 $ 0.20 $ 0.38