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Leasing Arrangements - Supplemental Disclosure for Statement of Cash Flows related to Operating and Finance Leases (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Cash Flows from Operating Activities      
Operating cash flows for operating leases $ (4,929) $ (4,490) $ (4,658)
Operating cash flows for finance leases (69) (36) (34)
Cash Flows from Financing Activities      
Financing cash flows for finance leases (612) (449) (394)
Supplemental lease cash flow disclosures      
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities 2,634 2,392 9,778
Right-of-use assets obtained in exchange for new finance lease liabilities $ 968 $ 832 $ 461