Cash, Cash Equivalents, and Marketable Securities Available for Sale Securities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Cash, cash equivalents, and restricted cash in held-for-sale assets	$ 0	$ 62
Operating Segments \| Ford Credit
Debt Securities, Available-for-sale [Line Items]
Cash, cash equivalents, and restricted cash in held-for-sale assets	0	62
Operating Segments \| Automotive
Debt Securities, Available-for-sale [Line Items]
Cash, cash equivalents, and restricted cash in held-for-sale assets	0	0
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	12,976	13,468
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	163	87
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(60)	(3)
Debt Securities, Available-for-sale	13,079	13,552
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	4,457	5,241
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	8,386	8,153
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	236	158
Operating Segments \| Mobility
Debt Securities, Available-for-sale [Line Items]
Cash, cash equivalents, and restricted cash in held-for-sale assets	0	0
U.S. government \| Operating Segments \| Automotive
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	2,598	2,839
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	71	11
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	(1)
Debt Securities, Available-for-sale	2,669	2,849
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	574	1,028
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	2,033	1,772
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	62	49
U.S. government agencies \| Operating Segments \| Automotive
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	1,329	1,445
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	14	2
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	0	(1)
Debt Securities, Available-for-sale	1,343	1,446
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	444	830
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	822	589
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	77	27
Non-U.S. government and agencies \| Operating Segments \| Automotive
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	3,625	3,925
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	55	20
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(1)	(1)
Debt Securities, Available-for-sale	3,679	3,944
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	1,594	1,546
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	2,085	2,398
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	0	0
Corporate debt \| Operating Segments \| Automotive
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	5,197	5,029
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	23	53
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(55)	0
Debt Securities, Available-for-sale	5,165	5,082
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	1,845	1,837
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	3,293	3,245
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	27	0
Other marketable securities \| Operating Segments \| Automotive
Debt Securities, Available-for-sale [Abstract]
Debt Securities, Available-for-sale, Amortized Cost	227	230
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	0	1
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	(4)	0
Debt Securities, Available-for-sale	223	231
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value	0	0
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value	153	149
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value	$ 70	$ 82

Cash, cash equivalents, and restricted cash in held-for-sale assets

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 320
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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next rolling fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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Fair value of investment in debt security, measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in rolling sixth through tenth fiscal year following latest fiscal year. For interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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