Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Millions			12 Months Ended
	Jul. 06, 2020	Jul. 05, 2020	Dec. 31, 2020	Dec. 31, 2019
Statement of Cash Flows [Abstract]
Write-off of deferred debt issuance costs and discount			$ 23.2
Amortization of deferred debt issuance costs and discount			21.8	$ 23.2
Payments for IPO and private placement offering costs	$ 131.9	$ 0.9	$ 132.8