Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Details)

v3.4.0.3
Income Taxes - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Income Tax Disclosure [Abstract]      
Effective income tax rates 0.00% 0.00%  
Estimated useful life for amortization of tax expense 30 years    
Prepaid tax asset, net of amortization $ 222.6   $ 190.1
Unrecognized Tax Benefits 1.5   1.5
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued $ 0.3   $ 0.3