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Note 16 - Leases - Schedule of Lease Costs (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Operating lease cost [a] [1] $ 303 $ 317
Short-term lease cost 25 26
Variable lease cost 11 10
Amortization of leased assets [b] [2] 69 66
Interest on lease liabilities [c] [3] 20 27
Net lease cost $ 428 $ 446
[1] Operating lease cost is primarily reported in equipment and other rents in our Consolidated Statements of Income.
[2] Amortization of leased assets is reported in depreciation in our Consolidated Statements of Income.
[3] Interest on lease liabilities is reported in interest expense in our Consolidated Statements of Income.