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Revision of Previously Issued Financial Statements - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jan. 01, 2021	Jan. 01, 2020	Jan. 01, 2019
Reclassification [Line Items]
Other capital	$ 572.7		$ 578.1	$ 20.9	$ 20.9	$ 20.9
Retained earnings	129.4		102.6	$ (7.8)	$ 8.0	$ 7.9
Income tax provision	$ 10.5	$ 5.6	2.9
Reclassifications due to Adoption
Reclassification [Line Items]
Other capital			(20.9)
Retained earnings			$ 10.7

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

The cumulative amount of the reporting entity's undistributed earnings or deficit.