Financial Instruments and Fair Value Measurements - Amount of Gains (Losses) Recognized in Accumulated Other Comprehensive Income (Effective Portion) Net of Reclassification into Earnings (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2021	Sep. 07, 2021	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Interest Rate Swap	$ 0.0	$ 5.3	$ (6.4)