Table of Contents NOTES TO CONSOLIDATED FINANCIAL STATEMENTS OF AMERICAN AIRLINES, INC. Supplemental balance sheet information related to leases was as follows (in millions, except lease term and discount rate): Supplemental cash flow and other information related to leases was as follows (in millions): 177 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  % 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 