Restructuring Charges (Tables)

12 Months Ended

Dec. 31, 2021

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserves and Utilization

The following table sets forth the restructuring reserves and utilization:

	Severance and termination		Contract termination and other exit costs		Total
Predecessor:
Balance as of December 31, 2018	$	4.7	$	2.9	$	7.6
Charge taken from January 1 to February 7, 2019	0.1		—		0.1
Payments made through February 7, 2019	(1.6)		(0.5)		(2.1)
Reclassification related to leases pursuant to the adoption of Topic 842	—		(2.4)		(2.4)
Balance remaining as of February 7, 2019	$	3.2	$	—	$	3.2
Successor:
Balance as of December 31, 2018	$	—	$	—	$	—
Impact of purchase accounting	3.2		—		3.2
Charge taken during 2019 (1)	36.6		12.2		48.8
Payments and other adjustments made during 2019	(34.0)		(7.7)		(41.7)
Balance remaining as of December 31, 2019	$	5.8	$	4.5	$	10.3
Charge taken during 2020 (1)	9.9		5.9		15.8
Payments made during 2020	(13.1)		(3.3)		(16.4)
Balance remaining as of December 31, 2020	$	2.6	$	7.1	$	9.7
Charge taken during 2021 (1)	18.9		—		18.9
Payments made during 2021	(16.8)		(3.8)		(20.6)
Balance remaining as of December 31, 2021	$	4.7	$	3.3	$	8.0

(1)Balance excludes charges accounted for under Topic 842. See Note 7 "Leases" for further discussion.