Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 21, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate	10.50%	23.20%	(25.10%)
Operating loss carryforwards, foreign	$ 1.8
Foreign tax credit carryforwards	$ 4.2
Statutory U.S. federal income tax rate	21.00%	21.00%	35.00%	35.00%
Tax Cuts and Jobs Act, incomplete accounting, change in tax rate, deferred tax liability, provisional income tax benefit		$ 53.2
Tax Cuts And Jobs Act, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense		$ 3.9