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CASH, CASH EQUIVALENTS, AND MARKETABLE SECURITIES - Schedule of Sales Proceeds and Gross Realized Gains/Losses (Details) - Company excluding Ford Credit - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Debt Securities, Available-for-sale [Line Items]        
Sales proceeds $ 1,481 $ 736 $ 5,301 $ 4,177
Gross realized gains 4 3 19 12
Gross realized losses $ 3 $ 0 $ 5 $ 4