Income Taxes - Schedule of Income Tax (Benefit) Provision Charged to Continuing Operations or Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
Dec. 31, 2021	Sep. 07, 2021	Dec. 31, 2022	Dec. 31, 2020
Income tax (benefit) provision related to:
Continuing operations	$ (7.3)	$ (16.9)	$ (35.1)	$ (25.5)
Accumulated other comprehensive income	$ 0.8	$ 10.8	$ 7.6	$ 2.4

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

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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+ Details