Financial Instruments and Risk Management - Tax Receivable Agreement Rollforward (Details) - USD ($) $ in Millions		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning fair value liability balance, January 1,		$ 155.6	$ 0.0
Tax receivable agreement, initially recorded		0.0	133.4
Change in fair value		7.7	22.2
Gain on Tax Receivable Agreement	$ (59.2)		0.0
Amounts previously recorded in accumulated other comprehensive income (loss)	(4.1)		0.0
Reclassification to accrued expenses and other liabilities		(100.0)	0.0
Ending fair value liability balance, December 31,	$ 0.0	$ 0.0	$ 155.6