Income Taxes - Additional Information (Details) - USD ($) |
12 Months Ended | ||||||
---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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Income Tax Disclosure [Abstract] | |||||||
Federal statutory rate | 21.00% | 35.00% | [1] | ||||
Tax cuts and jobs act of 2017 change in tax rate provisional income tax expense (benefit) | $ 80,300,000 | ||||||
Tax effect of pre-Separation earnings | [1] | (16,210,000) | |||||
Write-off of permanent outside basis difference resulting from change in tax status | [1] | 50,687,000 | |||||
Effect of U.S. federal tax rate change | [1] | 80,298,000 | |||||
Deferred income tax liabilities, Net | 246,000,000 | ||||||
Unrecognized tax benefits | $ 0 | $ 0 | |||||
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