Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Information [Abstract]

Schedule of Supplemental Cash Flow Information

	Successor		Predecessor
	September 8, 2021 to		January 1, 2021 to		Year Ended		Year Ended
(dollars in millions)	December 31, 2021		September 7, 2021		December 31, 2020		December 31, 2019
Capitalized interest expense	$	0.6	$	1.3	$	1.3	$	1.7
Cash paid for:
Interest		45.7		89.9		125.5		129.3
Income taxes, net of refunds		3.3		3.8		0.5		0.5
Noncash investing and financing activities:
Acquisition of property by assuming debt and other financing arrangements		5.8		3.8		7.7		14.5
Acquisition of property on account		51.2		54.9		24.3		26.0