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Presentation Change in Accounting Method (Details) - Ford Credit [Member] - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Financing Receivable, Allowance for Credit Losses $ 513 $ 589 $ 600 $ 597
Adjustments for New Accounting Pronouncement [Member]        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Financing Receivable, Allowance for Credit Losses   0    
Property Subject to or Available for Operating Lease, Accumulated Depreciation   $ 78