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Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Schedule of lease assets and liabilities

The table below presents the lease-related assets and liabilities recorded on our consolidated balance sheets as of December 31, 2020 and 2019 (in millions):

												As of December 31,
												2020						2019
Assets						Classification on Balance Sheet
Operating lease assets						Operating lease assets						$	804					$	912
Finance lease assets						Property and equipment, net						131						171
Total lease assets												$	935					$	1,083
Liabilities						Classification on Balance Sheet
Current:
Operating lease liabilities						Current operating lease liabilities						$	113					$	128
Finance lease liabilities						Current maturities of long-term debt and finance lease obligations						37						31
Long-term:
Operating lease liabilities						Long-term operating lease liabilities						752						690
Finance lease liabilities						Long-term debt and finance lease obligations						26						58
Total lease liabilities												$	928					$	907
												As of December 31,
												2020						2019
Weighted average remaining lease term (in years)
Operating leases												9						11
Finance leases												2						3
Weighted average discount rate
Operating leases												5.99		%				5.95		%
Finance leases												4.60		%				4.75		%

Lease, cost

The table below presents certain information related to our lease costs during the years ended December 31, 2020, 2019, and 2018 (in millions):

						2020						2019						2018
Operating lease cost						$	160					$	180					$	185
Short-term lease cost						1						2						2
Finance lease cost:
Amortization of assets						6						9						10
Interest on lease liabilities						2						3						3
Variable lease cost						282						391						379
Sublease income						(5)						(19)						(15)
Total net lease cost						$	446					$	566					$	564

Schedule of leases, supplemental cash flows

The table below presents supplemental cash flow information related to leases during the years ended December 31, 2020, 2019, and 2018 (in millions):

						2020						2019						2018
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases						$	146					$	136					$	151
Operating cash flows for finance leases						4						5						5
Financing cash flows for finance leases						28						17						17

Lessee, operating lease, liability, maturity

The table below presents scheduled future minimum lease payments for operating and finance leases recorded on our consolidated balance sheets, as of December 31, 2020 (in millions):

						As of December 31, 2020
						Operating Leases						Finance Leases
2021						$	160					$	40
2022						151						11
2023						141						11
2024						119						5
2025						82						—
Thereafter						493						—
Total minimum lease payments						1,146						67
Less: amount of lease payment representing interest						(281)						(4)
Present value of future minimum lease payment						865						63
Less: current obligations under leases						(113)						(37)
Long-term lease obligations						$	752					$	26

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Schedule of Lease Assets and Liabilities [Table Text Block]

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Schedule of Leases, Supplemental Cash Flows [Table Text Block]

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- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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