Leases (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Lease Expense Components

The following table presents our lease expense components:

	Year Ended December 31,
(Dollars in millions)	2024		2023		2022
Lease Expense Components:
Operating Lease Expense	$	57	$	60	$	57
Short-term and Variable Lease Expense	205		174		90
Subtotal of Operating Lease Expense	$	262	$	234	$	147
Finance Lease Expense: Amortization of Assets and Interest on Lease Liabilities	24		19		18
Sublease Income	(2)		(2)		(3)
Total Lease Expense	$	284	$	251	$	162

Operating and Finance Lease Maturities

Future commitments under operating and finance leases are as follows:

	Operating		Finance
(Dollars in millions)	Leases		Leases
Maturity of Lease Liabilities as of December 31, 2024:
2025	$	53	$	20
2026	41		17
2027	28		10
2028	15		5
2029	13		1
After 2029	90		—
Total Lease Payments	240		53
Less: Interest	(87)		(5)
Present Value of Lease Liabilities	$	153	$	48

Supplemental Lease Disclosures

	Years Ended
(Dollars in millions except years and percentages)	12/31/2024			12/31/2023			12/31/2022
Other Supplemental Information:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases	$	61		$	67		$	80
Operating cash outflows from finance leases	$	5		$	5		$	5
Financing cash outflows from finance leases	$	35		$	18		$	16
Assets obtained in exchange for:
Operating leases	$	32		$	70		$	50
Finance leases	$	34		$	16		$	18
Weighted-average remaining lease term (years)
Operating leases	8.9			8.4			8.8
Finance leases	3.1			3.1			3.9
Weighted-average discount rate (percentages)
Operating leases	8.6		%	8.8		%	9.1		%
Finance leases	6.8		%	8.2		%	8.5		%