Allowance for Credit Losses (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Total allowance
Beginning balance	$ 359	$ 380
Charge-offs	(109)	(105)
Recoveries	47	53
Provision for credit losses	67us-gaap_ProvisionForLoanAndLeaseLosses	31us-gaap_ProvisionForLoanAndLeaseLosses
Other	(9)	(1)
Ending balance	355	358
Analysis of Ending Balance of Finance Receivables and Net Investment in Operating Leases [Abstract]
Collective impairment allowance	333	332
Specific impairment allowance	22	26
Ending balance	355	358
Allowance for credit losses, finance receivables
Beginning balance	321	357
Charge-offs	(79)	(77)
Recoveries	32	39
Provision for credit losses	49	16
Other	(9)	(1)
Ending balance	314	334
Analysis of ending balance of allowance for credit losses, finance receivables
Collective impairment allowance	292	308
Specific impairment allowance	22	26
Ending balance	314	334
Analysis of ending balance of finance receivables
Collectively evaluated for impairment	86,288	83,864
Specifically evaluated for impairment	524	516
Financing Receivables	86,812us-gaap_NotesReceivableGross	84,380us-gaap_NotesReceivableGross	87,236us-gaap_NotesReceivableGross
Ending balance, net of allowance for credit losses	86,498us-gaap_NotesReceivableNet	84,046us-gaap_NotesReceivableNet	86,915us-gaap_NotesReceivableNet
Allowance for credit losses, net investment in operating leases
Beginning balance	38	23
Charge-offs	(30)	(28)
Recoveries	15	14
Other	0	0
Ending balance	41	24
Analysis of ending balance of allowance for credit losses, net investment in operating leases
Collective impairment allowance	41	24
Specific impairment allowance	0	0
Ending balance	41	24
Analysis of ending balance of net investment in operating leases
Collectively evaluated for impairment	22,025	18,856
Individually evaluated for impairment	0	0
Net investment in operating leases before allowance for credit losses	22,025fmcc_InvestmentInOperatingLeasesNet	18,856fmcc_InvestmentInOperatingLeasesNet	21,556fmcc_InvestmentInOperatingLeasesNet
Ending balance, net investment in operating leases	21,984fmcc_NetInvestmentInOperatingLeases	18,832fmcc_NetInvestmentInOperatingLeases	21,518fmcc_NetInvestmentInOperatingLeases
Consumer Portfolio Segment [Member]
Allowance for credit losses, finance receivables
Beginning balance	305	327
Charge-offs	(80)	(75)
Recoveries	30	34
Provision for credit losses	53	23
Other	(7)	(2)
Ending balance	301	307
Analysis of ending balance of allowance for credit losses, finance receivables
Collective impairment allowance	280	284
Specific impairment allowance	21	23
Ending balance	301	307
Analysis of ending balance of finance receivables
Collectively evaluated for impairment	53,135	50,115
Specifically evaluated for impairment	396	424
Financing Receivables	53,531	50,539
Ending balance, net of allowance for credit losses	53,230	50,232
Commercial Portfolio Segment [Member]
Allowance for credit losses, finance receivables
Beginning balance	16	30
Charge-offs	1	(2)
Recoveries	2	5
Provision for credit losses	(4)	(7)
Other	(2)	1
Ending balance	13	27
Analysis of ending balance of allowance for credit losses, finance receivables
Collective impairment allowance	12	24
Specific impairment allowance	1	3
Ending balance	13	27
Analysis of ending balance of finance receivables
Collectively evaluated for impairment	33,153	33,749
Specifically evaluated for impairment	128	92
Financing Receivables	33,281	33,841
Ending balance, net of allowance for credit losses	33,268	33,814
Net Investment in Operating Leases [Member]
Allowance for credit losses, finance receivables
Provision for credit losses	$ 18	$ 15

Allowance for Loan and Lease Losses Other

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Financing and Loans and Leases Receivable Allowance

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Financing and Loans and Leases Receivable Allowance for Credit Losses Individually Evaluated for Impairment

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Financing and Loans and Leases Receivable Allowance, Other

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Financing and Loans and Leases Receivable Allowance Recoveries of Bad Debts

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Financing and Loans and Leases Receivable Allowance Write Offs

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Reflects other additions and reductions to the finance receivable allowance, which are not reflected elsewhere or separately disclosed.

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Investments in operating leases, net of depreciation, for vehicles subject to or available for lease as of the balance sheet date.

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Loans and Lease Allowance for Credit Losses Collectively Evaluated for Impairment

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Loans and Lease Allowance for Credit Losses Individually Evaluated for Impairment

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Loans and Leases Receivable Collectively Evaluated for Impairment

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Loans and Leases Receivable Individually Evaluated for Impairment

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Investments in operating leases, net of depreciation and allowance for credit losses, for vehicles subject to or available for lease as of the balance sheet date.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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A valuation allowance for financing receivables that are expected to be uncollectible.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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Amount of expense related to estimated loss from loan and lease transactions.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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