Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2024

Supplemental Cash Flow Elements [Abstract]

Schedule of Noncash Investing and Financing Activities

Noncash investing and financing activities are as follows:

	Three Months Ended
	March 31,
	2024		2023
	(Dollars in Millions)
Accrued liabilities for purchases of property, plant and equipment	$	35	$	40
Right-of-use assets obtained in exchange for new    operating lease liabilities	$	17	$	14
Right-of-use assets obtained in exchange for    new finance lease liabilities	$	5	$	5
Remeasurement of operating lease right-of-use assets	$	—	$	1
Acquisition of assets through asset exchange	$	—	$	5
Accrued proceeds on the sale of property, plant and equipment	$	1	$	—

Supplemental Disclosures of Cash Flow Information

Supplemental disclosures of cash flow information are as follows:

	Three Months Ended
	March 31,
	2024		2023
	(Dollars in Millions)
Cash paid for interest, net of capitalized amount	$	39	$	41
Cash paid for income taxes, net of refunds	$	3	$	4