v3.10.0.1
Income Taxes (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Income Tax Disclosure [Abstract]        
Effective tax rate 24.70% 39.10% 24.10% 37.90%
Cash paid for income taxes     $ 30,000,000 $ 170,000,000
Accrued liability for penalties $ 500,000   500,000  
Accrued liability for interest related to uncertain tax positions and penalties 11,300,000   11,300,000  
Unrecognized tax benefits settlements with taxing authorities, minimum     0  
Unrecognized tax benefits settlements with taxing authorities, maximum     10,000,000  
Valuation allowance, state loss carryforwards $ 72,000,000   $ 72,000,000