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Leases (Tables)

12 Months Ended

Dec. 31, 2020

The components of lease expense were as follows (in millions):


	Year Ended December 31,
	2020		2019		2018
Operating lease cost	$	1,957	$	2,027	$	1,907
Finance lease cost:
Amortization of assets	92		79		78
Interest on lease liabilities	38		43		48
Variable lease cost	1,801		2,558		2,353
Total net lease cost	$	3,888	$	4,707	$	4,386

Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate):


	December 31,
	2020			2019
Operating leases:
Operating lease ROU assets	$	8,039		$	8,737

Current operating lease liabilities	$	1,651		$	1,708
Noncurrent operating lease liabilities	6,777			7,421
Total operating lease liabilities	$	8,428		$	9,129

Finance leases:
Property and equipment, at cost	$	1,021		$	954
Accumulated amortization	(539)			(447)
Property and equipment, net	$	482		$	507

Current finance lease liabilities	$	100		$	112
Noncurrent finance lease liabilities	472			558
Total finance lease liabilities	$	572		$	670

Weighted average remaining lease term (in years):
Operating leases	7.4			7.4
Finance leases	5.4			6.2

Weighted average discount rate:
Operating leases	5.6		%	4.7		%
Finance leases	6.3		%	6.2		%


	Year Ended December 31,
	2020		2019		2018
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,028	$	2,013	$	1,931
Operating cash flows from finance leases	39		43		48
Financing cash flows from finance leases	114		83		78

Non-cash transactions:
ROU assets acquired through operating leases	917		1,145		1,292
Operating lease conversion to finance lease	5		41		—
Property and equipment acquired through finance leases	11		20		—

Gain on sale leaseback transactions, net	107		107		59

Maturities of lease liabilities were as follows (in millions):

Maturities of lease liabilities were as follows (in millions):

The components of lease expense were as follows (in millions):


	Year Ended December 31,
	2020		2019		2018
Operating lease cost	$	1,943	$	2,012	$	1,889
Finance lease cost:
Amortization of assets	92		79		78
Interest on lease liabilities	38		43		48
Variable lease cost	1,786		2,542		2,353
Total net lease cost	$	3,859	$	4,676	$	4,368

Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate):


	December 31,
	2020			2019
Operating leases:
Operating lease ROU assets	$	7,994		$	8,694

Current operating lease liabilities	$	1,641		$	1,695
Noncurrent operating lease liabilities	6,739			7,388
Total operating lease liabilities	$	8,380		$	9,083

Finance leases:
Property and equipment, at cost	$	1,021		$	954
Accumulated amortization	(539)			(447)
Property and equipment, net	$	482		$	507

Current finance lease liabilities	$	100		$	112
Noncurrent finance lease liabilities	472			558
Total finance lease liabilities	$	572		$	670

Weighted average remaining lease term (in years):
Operating leases	7.4			7.4
Finance leases	5.4			6.2

Weighted average discount rate:
Operating leases	5.6		%	4.7		%
Finance leases	6.3		%	6.2		%

Supplemental cash flow and other information related to leases was as follows (in millions):


	Year Ended December 31,
	2020		2019		2018
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	2,015	$	1,996	$	1,914
Operating cash flows from finance leases	39		43		48
Financing cash flows from finance leases	114		83		78

Non-cash transactions:
ROU assets acquired through operating leases	898		1,144		1,258
Operating lease conversion to finance lease	5		41		—
Property and equipment acquired through finance leases	11		20		—

Gain on sale leaseback transactions, net	107		107		59

Maturities of lease liabilities were as follows (in millions):

Maturities of lease liabilities were as follows (in millions):