Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Unrecognized tax benefits	$ 0	$ 0	$ 4,400,000	$ 8,100,000
Income taxes paid	$ 55,800,000	$ 68,100,000	$ 200,000