Other Compensation Liabilities - Components of Other Compensation Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-based payments liability	$ 28.1	$ 25.0
Profit interests compensation liability	30.6	0.8
Voluntary deferral plan liability	45.0	48.0
Total other compensation liabilities	$ 103.7	$ 73.8

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

No definition available.

Name:	us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant