Leases (Tables)
 12 Months Ended
Dec. 31, 2019
Leases [Abstract]  
Schedule of lease-related assets and liabilities
The table below presents the lease-related assets and liabilities recorded on the balance sheet.
December 31,
(in millions)Classification on the Balance Sheet20192018
Assets
Operating lease assetsOperating lease right-of-use assets$5,627  $5,994  
Finance lease assetsProperty and equipment, net1,062  490  
Total lease assets$6,689  $6,484  
Liabilities
Current
OperatingCurrent maturities of operating leases$801  $955  
FinanceCurrent maturities of debt and finance leases233  109  
Noncurrent
OperatingNoncurrent operating leases5,294  5,801  
FinanceDebt and finance leases821  294  
Total lease liabilities$7,149  $7,159  
Weighted-average remaining lease term
Operating leases12 years12 years
Finance leases5 years7 years
Weighted-average discount rate
Operating leases(1)
3.73 %3.69 %
Finance leases3.46 %5.23 %
(1)Upon adoption of the new lease standard, discount rates used for existing leases were established at January 1, 2018.
Schedule of lease costs for finance and operating leases
The table below presents certain information related to the lease costs for finance and operating leases.
Year Ended December 31,
(in millions)20192018
Finance lease cost
Amortization of leased assets$110  $100  
Interest of lease liabilities29  22  
Operating lease cost(1)
1,013  994  
Short-term lease cost(1)
500  458  
Variable lease cost(1)
1,456  1,427  
Total lease cost$3,108  $3,001  
(1)Expenses are classified within aircraft rent, landing fees and other rents and regional carriers expense, excluding fuel on the income statement. For the year ended December 31, 2019, $174 million and $64 million of the operating and variable lease costs, respectively, and for the year ended December 31, 2018, $150 million, $18 million and $48 million of the operating, short-term and variable lease costs, respectively, are attributable to our regional carriers.
Schedule supplemental cash flows related to leases
The table below presents supplemental cash flow information related to leases.
Year Ended December 31,
(in millions)20192018
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases$1,166  $1,271  
Operating cash flows for finance leases27  22  
Financing cash flows for finance leases192  108  
Schedule of reconciliation of undiscounted cash flows to operating lease liability
The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities recorded on the balance sheet.
(in millions)Operating LeasesFinance Leases
2020$1,003  $264  
2021836  239  
2022729  174  
2023698  124  
2024628  180  
Thereafter3,821  179  
Total minimum lease payments7,715  1,160  
Less: amount of lease payments representing interest(1,620) (106) 
Present value of future minimum lease payments6,095  1,054  
Less: current obligations under leases(801) (233) 
Long-term lease obligations$5,294  $821  
Schedule of reconciliation of undiscounted cash flows to finance lease liability
The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities recorded on the balance sheet.
(in millions)Operating LeasesFinance Leases
2020$1,003  $264  
2021836  239  
2022729  174  
2023698  124  
2024628  180  
Thereafter3,821  179  
Total minimum lease payments7,715  1,160  
Less: amount of lease payments representing interest(1,620) (106) 
Present value of future minimum lease payments6,095  1,054  
Less: current obligations under leases(801) (233) 
Long-term lease obligations$5,294  $821