Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Measured at Fair Value

The following table summarizes the financial assets and liabilities of the Company that are measured at fair value on a recurring basis (in millions):

Successor
	Fair Value Measurements at December 31, 2021
	Level 1		Level 2		Level 3
Assets
Cash, cash equivalents, and restricted cash (Note 12)	$	85.3	$	—	$	—
Discretionary retirement plan (Note 13)	3.7		0.8		—
Liabilities
Discretionary retirement plan (Note 13)	3.7		0.8		—
Public warrants	46.9		—		—
Private placement warrants	—		21.2		—

Predecessor
	Fair Value Measurements at June 30, 2021
	Level 1		Level 2		Level 3
Assets
Cash, cash equivalents, and restricted cash (Note 12)	$	102.4	$	—	$	—
Discretionary retirement plan (Note 13)	3.4		0.8		—
Liabilities
Discretionary retirement plan (Note 13)	3.4		0.8		—
	Fair Value Measurements at June 30, 2020
	Level 1		Level 2		Level 3
Assets
Cash, cash equivalents, and restricted cash (Note 12)	$	120.0	$	—	$	—
Discretionary retirement plan (Note 13)	2.4		1.1		—
Liabilities
Discretionary retirement plan (Note 13)	2.4		1.1		—