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Commitments and Contingencies (Product Warranties) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Product Warranties [Roll Forward]    
Beginning balance – January 1 $ 1,900 $ 1,527
Additions for current year deliveries 143 71
Reductions for payments made (305) (182)
Changes in estimates 355 439
Ending balance – September 30 $ 2,093 $ 1,855