Employee Benefit Plans - Funded status of the defined benefit plans (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Sep. 29, 2024	Sep. 29, 2024	Dec. 31, 2024	Dec. 31, 2023
Change in projected benefit obligation
Balance at beginning of the year			$ 73.5	$ 68.0
Interest cost			1.9	0.7
Actuarial loss (gain)		$ 0.9	(6.3)	5.5
Annuity benefits paid			(4.1)	(0.7)
Lump sum benefits paid	$ (50.0)		(15.0)
Annuity sale to insurer			(50.0)
Balance at end of year				73.5
Change in fair value of plan assets
Balance at beginning of the year			74.4	67.9
Actual (loss) gain on plan assets			2.5	7.2
Annuity Benefits paid			(4.1)	(0.7)
Lump sum settlement benefits paid			(15.0)
Annuity settlement sale to insurer			(50.0)
Transfer surplus assets			$ (7.8)
Fair value of plan assets at end of the year				74.4
Funded (underfunded) status at end of year				$ 0.9