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Debt and Commitments - Committed Credit Facilities (Details) - Operating Segments [Member]
$ in Billions
Dec. 31, 2018
USD ($)
Automotive  
Debt Instrument [Line Items]  
Line of Credit Facility, Maximum Borrowing Capacity $ 11.9
Ford Motor Credit Company LLC [Member] | Ford Credit  
Debt Instrument [Line Items]  
Line of Credit Facility, Maximum Borrowing Capacity 41.4
Line of Credit Facility, Remaining Borrowing Capacity 19.6
Corporate Credit Facility [Member] | Automotive  
Debt Instrument [Line Items]  
Line of Credit Facility, Maximum Borrowing Capacity $ 10.4