Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Credit Loss [Abstract]
Accounts receivable, allowance for credit loss, incremental increase (decrease) due to COVID	$ 0.0	$ 2.0	$ 0.0	$ 5.1