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Product Warranty and Related Liabilities (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Product Warranty and Related Liabilities [Roll Forward]    
Warranty balance at beginning of period $ 7,798 $ 7,590
Warranties issued and assumed in period – recall campaigns 117 124
Warranties issued and assumed in period – product warranty 498 527
Payments (881) (732)
Adjustments to pre-existing warranties (19) 36
Effect of foreign currency and other (115) 7
Warranty balance at end of period $ 7,398 $ 7,552