Benefit Plans (Tables)

6 Months Ended

Jun. 30, 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
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Interest cost	$	4.9	$	4.8
Expected return on plan assets	(4.6)		(4.5)
Recognized net actuarial loss	—		0.2
Net periodic pension benefit cost	$	0.3	$	0.5

	Successor		Predecessor
	Six months ended		Six months ended
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Interest cost	$	9.7	$	9.7
Expected return on plan assets	(9.2)		(9.0)
Recognized net actuarial loss	—		0.4
Net periodic pension benefit cost	$	0.5	$	1.1

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
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Service cost	$	1.6	$	1.5
Interest cost	2.7		2.8
Expected return on plan assets	(3.4)		(3.3)
Recognized net actuarial gain	—		(0.9)
Amortization of prior service cost	—		(0.2)
Net periodic pension benefit cost	$	0.9	$	(0.1)

	Successor		Predecessor
	Six months ended		Six months ended
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Service cost	$	3.4	$	3.1
Interest cost	5.3		5.7
Expected return on plan assets	(6.9)		(6.7)
Recognized net actuarial gain	—		(1.8)
Amortization of prior service cost	—		(0.4)
Net periodic pension benefit cost	$	1.8	$	(0.1)

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
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Interest cost	$	—	$	—
Recognized net actuarial gain	—		(0.1)
Net periodic pension benefit cost	$	—	$	(0.1)

	Successor		Predecessor
	Six months ended		Six months ended
	June 30, 2024		June 30, 2023
Components of net periodic benefit cost
Interest cost	$	0.1	$	0.1
Recognized net actuarial gain	—		(0.2)
Net periodic pension benefit cost	$	0.1	$	(0.1)