Financial Instruments and Risk Management (as restated) - Tax Receivable Agreement Narrative (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Mar. 02, 2020	Mar. 01, 2020	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Tax Receivable Agreement, effect of one percentage point change on fair value				$ 10.0
Percent of tax savings under Tax Receivable Agreement, prior to closing date		65.00%
Percent of tax savings under Tax Receivable Agreement, expected after closing date	35.00%
Tax Receivable Agreement, period covered	12 years
Tax Receivable Agreement, estimated payments, undiscounted			$ 191.5
Fair value of the estimated liability included as an adjustment to additional pain in capital				133.4
Interest expense, Tax Receivable Agreement				21.3
Unrealized gain recorded in other comprehensive income				$ (0.9)	$ 0.0	$ 0.0
Measurement Input, Discount Rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Tax Receivable Agreement, measurement input				3.40%
Additional Paid in Capital
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of the estimated liability included as an adjustment to additional pain in capital			$ 133.4	$ 133.4