Fair Value of Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Recorded at Fair Market Value

Assets and liabilities subject to fair value measurement by fair value level are recorded as follows:

		Successor
		March 31, 2024						December 31, 2023
				Fair Value Measurements Using						Fair Value Measurements Using
	Classification on condensed consolidated Balance Sheets	Fair Value		Level 1		Level 2		Fair Value		Level 1		Level 2
Assets
Certificates of deposit	Short-term investments	$	19.2	$	19.2	$	—	$	13.4	$	13.4	$	—
Assets held in rabbi trusts	Securities and other investments	3.0		3.0		—		2.9		2.9		—
Total		$	22.2	$	22.2	$	—	$	16.3	$	16.3	$	—
Liabilities
Foreign exchange forward contracts	Other current liabilities	$	0.4	$	—	$	0.4	$	0.4	$	—	$	0.4
Deferred compensation	Other liabilities	3.0		3.0		—		2.9		2.9		—
Total		$	3.4	$	3.0	$	0.4	$	3.3	$	2.9	$	0.4