Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost [Table Text Block]

	Successor				Predecessor
			Period From		Period From
	Year		12/14/2019		1/1/2019
	Ended		through		through
(Dollars in millions)	12/31/2020		12/31/2019		12/13/2019
Lease Expense Components:
Operating Lease Expense	$	76	$	5	$	109
Short-term and Variable Lease Expense	63		5		91
Subtotal of Operating Lease Expense	$	139	$	10	$	200
Finance Lease Expense: Amortization of ROU Assets and Interest on Lease Liabilities	15		1		11
Sublease Income	(6)		(1)		(6)
Total Lease Expense	$	148	$	10	$	205

Operating and Finance Lease Maturities [Table Text Block]

	Operating		Finance
(Dollars in millions)	Leases		Leases
Maturity of Lease Liabilities as of December 31, 2020:
2021	$	91	$	14
2022	69		12
2023	39		12
2024	28		11
2025	22		11
After 2025	131		14
Total Lease Payments	380		74
Less: Interest	132		17
Present Value of Lease Liabilities	$	248	$	57

Supplemental Lease Disclosures [Table Text Block]

	Successor						Predecessor
				Period From			Period From
				12/14/2019			1/1/2019
	Year Ended			through			through
(Dollars in millions except years and percentages)	12/31/2020			12/31/2019			12/13/2019
Other Supplemental Information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	101		$	5		$	131
Operating cash outflows from finance leases	$	5		$	—		$	4
Financing cash outflows from finance leases	$	9		$	1		$	8
ROU assets obtained in exchange of new operating lease liabilities	$	37		$	2		$	59
ROU assets obtained in exchange of new finance lease liabilities	$	4		$	—		$	6
Loss on sale leaseback transactions (short-term) (a)	$	—		$	—		$	34
	December 31, 2020			December 31, 2019
Weighted-average remaining lease term (years)
Operating leases	8.1			7.8
Finance leases	5.9			6.7
Weighted-average discount rate (percentages)
Operating leases	9.6		%	9.2		%
Finance leases	9.1		%	9.1		%

(a) Included in “Impairments and Other Charges” in our Consolidated Statements of Operations and “Other Assets and Liabilities, Net” in our Consolidated Statements of Cash Flows.