Leases (Tables)

12 Months Ended

Dec. 31, 2020

Lease expense consisted of the following:


	Years Ended December 31,
	2020		2019
	(Dollars in millions)
Operating and short-term lease cost	$	729	677
Finance lease cost:
Amortization of right-of-use assets	36		44
Interest on lease liability	12		12
Total finance lease cost	48		56
Total lease cost	$	777	733

Supplemental consolidated cash flow statement information related to leases:


	Years Ended December 31,
	2020		2019
	(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	566	665
Operating cash flows for finance leases	14		14
Financing cash flows for finance leases	40		32
Supplemental lease cash flow disclosures
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$	375	358
Right-of-use assets obtained in exchange for new finance lease liabilities	124		14

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


		As of December 31,
Leases (Dollars in millions)	Classification on the Balance Sheet	2020			2019
Assets
Operating lease assets	Other, net	$	1,699		1,686
Finance lease assets	Property, plant and equipment, net of accumulated depreciation	329			252
Total leased assets		$	2,028		1,938

Liabilities
Current
Operating	Current operating lease liabilities	$	379		416
Finance	Current maturities of long-term debt	26			35
Noncurrent
Operating	Other	1,405			1,342
Finance	Long-term debt	267			185
Total lease liabilities		$	2,077		1,978

Weighted-average remaining lease term (years)
Operating leases		6.7			7.2
Finance leases		12.1			11.3
Weighted-average discount rate
Operating leases		6.01		%	6.46	%
Finance leases		4.94		%	5.47	%

As of December 31, 2020, maturities of lease liabilities were as follows:

As of December 31, 2020, maturities of lease liabilities were as follows: