Leases (Tables)

12 Months Ended

Dec. 31, 2021

Lease expense consisted of the following:


	Years Ended December 31,
	2021		2020
	(Dollars in millions)
Operating and short-term lease cost	$	26	67
Finance lease cost:
Amortization of right-of-use assets	1		5
Interest on lease liability	—		—
Total finance lease cost	1		5
Total lease cost	$	27	72

Supplemental consolidated cash flow statement information related to leases is included below:


	Years Ended December 31,
	2021		2020
	(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	36	32
Operating cash flows for financing leases	—		5
Financing cash flows for finance leases	1		—
Supplemental lease cash flow disclosures
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$	18	19

Supplemental consolidated balance sheet information and other information related to leases is included below:


		As of December 31,
Leases (Dollars in millions)	Classification on the Balance Sheet	2021			2020
Assets
Operating lease assets	Other, net	$	69		67
Finance lease assets	Property, plant and equipment, net of accumulated depreciation	5			8
Total leased assets		$	74		75

Liabilities
Current
Operating	Other	$	33		28
Finance	Current maturities of long-term debt	1			1
Noncurrent
Operating	Other	63			76
Finance	Long-term debt	1			4
Total lease liabilities		$	98		109

Weighted-average remaining lease term (years)
Operating leases		4.2			4.4
Finance leases		6.3			6.3
Weighted-average discount rate
Operating leases		3.97		%	4.71	%
Finance leases		6.21		%	6.62	%

As of December 31, 2021, maturities of lease liabilities were as follows: