Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2024

Retirement Benefits [Abstract]

Schedule of Components of Net Periodic Benefit Cost

The following tables set forth the net periodic benefit cost for the Company’s U.S. defined benefit pension plans:

	Successor		Predecessor
	Three months ended		Three months ended
	March 31, 2024		March 31, 2023
Components of net periodic benefit cost
Interest cost	$	4.8	$	4.9
Expected return on plan assets	(4.6)		(4.5)
Recognized net actuarial loss	—		0.2
Net periodic pension benefit cost	$	0.2	$	0.6

The following tables set forth the net periodic benefit cost for the Company’s Non-U.S. defined benefit pension plans:

	Successor		Predecessor
	Three months ended		Three months ended
	March 31, 2024		March 31, 2023
Components of net periodic benefit cost
Service cost	$	1.8	$	1.6
Interest cost	2.6		2.9
Expected return on plan assets	(3.5)		(3.4)
Recognized net actuarial gain	—		(0.9)
Amortization of prior service cost	—		(0.2)
Net periodic pension benefit cost	$	0.9	$	—

The following tables set forth the net periodic benefit cost for the Company’s other benefit plans during the period:

	Successor		Predecessor
	Three months ended		Three months ended
	March 31, 2024		March 31, 2023
Components of net periodic benefit cost
Interest cost	$	0.1	$	0.1
Recognized net actuarial gain	—		(0.1)
Net periodic pension benefit cost	$	0.1	$	—