Leases (Tables)

9 Months Ended

Sep. 30, 2021

Leases [Abstract]

Schedule of Supplemental Balance Sheet Information Related to Leases

Supplemental balance sheet information related to the Company's leases is as follows:

		Successor		Predecessor
(dollars in millions)	Balance Sheet Location	September 30, 2021		December 31, 2020
Operating lease assets, net of amortization	Operating lease right-of-use assets	$	41.4	$	37.4
Finance lease assets, net of amortization	Property, plant and equipment, net		15.4		28.0
Operating lease liabilities:
Current operating lease liabilities	Other current liabilities		8.8		9.6
Noncurrent operating lease liabilities	Operating lease liabilities		38.0		33.6
Total operating lease liabilities			46.8		43.2
Finance lease liabilities:
Current finance lease liabilities	Current portion of long-term debt		10.1		13.9
Noncurrent finance lease liabilities	Long-term debt, less current portion		47.1		52.1
Total finance lease liabilities		$	57.2	$	66.0

Schedule of Supplemental Cash Flow Information Related to Leases

Supplemental cash flow information related to leases is as follows:

	Successor		Predecessor		Predecessor
(dollars in millions)	September 8, 2021 to September 30, 2021		January 1, 2021 to September 7, 2021		Nine Months Ended September 30, 2020
Supplemental Cash Flows Information
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	0.3	$	2.9	$	3.3
Operating cash flows from operating leases	$	0.8	$	7.2	$	9.5
Financing cash flows from finance leases	$	1.2	$	9.9	$	13.9
Right-of-use assets obtained in exchange for lease obligations:
New operating leases	$	—	$	11.5	$	6.8
New finance leases	$	—	$	3.8	$	4.0