Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Lease, cost

Lease expense consisted of the following:

	Years Ended December 31,
	2021		2020
	(Dollars in millions)
Operating and short-term lease cost	$	368	440
Finance lease cost:
Amortization of right-of-use assets	24		19
Interest on lease liability	12		11
Total finance lease cost	36		30
Total lease cost	$	404	470

Supplemental unaudited consolidated cash flow statement information related to leases:

	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	$	360	350
Operating cash flows for finance leases	12		13
Financing cash flows for finance leases	38		18
Supplemental lease cash flow disclosures:
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	380		151
Right-of-use assets obtained in exchange for new finance lease liabilities	$	28	100

Assets and liabilities

Supplemental consolidated balance sheet information and other information related to leases:

		Years Ended December 31,
Leases	Classification on the Balance Sheet	2021			2020
		(Dollars in millions)
Assets
Operating lease assets	Other, net (1)	$	1,182		1,091
Finance lease assets	Property, plant and equipment, net of accumulated depreciation	231			235
Total leased assets		$	1,413		1,326
Liabilities
Current
Operating	Current operating lease liabilities (2)	$	299		241
Finance	Current maturities of long-term debt	16			14
Noncurrent
Operating	Operating lease liabilities (3)	953			903
Finance	Long-term debt	226			241
Total lease liabilities		$	1,494		1,399
Weighted-average remaining lease term (years)
Operating leases		6.9			7.2
Finance leases		11.1			12.5
Weighted-average discount rate
Operating leases		4.79		%	5.85	%
Finance leases		4.81		%	5.01	%

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(1) Includes affiliate operating lease assets of $294 million and $83 million as of December 31, 2021 and 2020, respectively.

(2) Includes current portion of affiliate operating lease liabilities of $82 million and $31 million as of December 31, 2021 and 2020, respectively.

(3) Includes noncurrent portion of affiliate operating lease liabilities of $224 million and $65 million as of December 31, 2021 and 2020, respectively.

Lessee, operating lease, liability, maturity

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

	Operating Leases		Finance Leases
	(Dollars in millions)
2022	$	347	28
2023	284		25
2024	223		26
2025	175		26
2026	115		26
Thereafter	355		191
Total lease payments	1,499		322
Less: interest	(247)		(80)
Total	1,252		242
Less: current portion	(299)		(16)
Long-term portion	$	953	226

Finance lease, liability, maturity

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

	Operating Leases		Finance Leases
	(Dollars in millions)
2022	$	347	28
2023	284		25
2024	223		26
2025	175		26
2026	115		26
Thereafter	355		191
Total lease payments	1,499		322
Less: interest	(247)		(80)
Total	1,252		242
Less: current portion	(299)		(16)
Long-term portion	$	953	226