Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2024	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 31, 2023
Pre-Merger Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash used to settle award	$ 24.7
Allocated share-based compensation expense (gain)		$ (2.2)	$ 2.6	$ 1.1	$ 1.1
Pre-Merger Awards | Employee-Related Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based liability to be cash settled		0.7		0.7		$ 27.6
Incentive Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense (gain)		1.7	$ 1.9	$ 4.5	$ 6.9
Award vesting period				5 years
Granted during period (in shares)				45,036
Average grant date fair value (in dollars per share)				$ 44.59
Period for recognition				3 years 3 months 18 days
Unrecognized share-based compensation expense		$ 24.6		$ 24.6