Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Revision of Previously Issued Financial Statements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jan. 01, 2021	Jan. 01, 2020	Jan. 01, 2019
Reclassification [Line Items]
Other capital	$ 505.1		$ 505.1		$ 578.1	$ 20.9	$ 20.9	$ 20.9
Retained earnings	160.4		160.4		102.6	$ (7.8)	$ 8.0	$ 7.9
Income tax provision	$ 13.7	$ 14.8	$ 31.5	$ 36.4	2.9
Reclassifications due to Adoption
Reclassification [Line Items]
Other capital					(20.9)
Retained earnings					$ 10.7
Income tax provision		$ 0.1		$ 0.1