Commitments and Contingencies (Details) (USD $)	3 Months Ended
Dec. 31, 2014	Mar. 31, 2014
Commitment:
Credit facilities commitments with vehicle and industrial equipment dealers	$ 1,185,000,000us-gaap_OtherCommitment	$ 1,295,000,000us-gaap_OtherCommitment
Minimum lease commitments	53,000,000	62,000,000
Total commitments	1,238,000,000tmcc_Commitment	1,357,000,000tmcc_Commitment
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	100,000,000	100,000,000
Minimum lease commitments	53,000,000	62,000,000
Total commitments and guarantees	1,338,000,000tmcc_CommitmentAndGuarantee	1,457,000,000tmcc_CommitmentAndGuarantee
Future minimum lease payments under non-cancelable operating leases
2015	5,000,000
2016	19,000,000
2017	15,000,000
2018	9,000,000
2019	4,000,000
Thereafter	1,000,000
Total	53,000,000	62,000,000
TMS [Member]
Commitment:
Minimum lease commitments	25,000,000	30,000,000
Guarantor Obligations [Line Items]
15-year lease agreement between TMCC and TMS	15 years
Minimum lease commitments	25,000,000	30,000,000
Expiration date of the 15-year lease agreement between TMCC and TMS	Mar. 31, 2018
Future minimum lease payments under non-cancelable operating leases
Total	25,000,000	30,000,000
2028 [Member] \| TMCC Affiliates [Member]
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	20,000,000
2029 [Member] \| TMCC Affiliates [Member]
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	50,000,000
2030 [Member] \| TMCC Affiliates [Member]
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000
2031 [Member] \| TMCC Affiliates [Member]
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000
2032 [Member] \| TMCC Affiliates [Member]
Guarantor Obligations [Line Items]
Guarantees of affiliate pollution control and solid waste disposal bonds	10,000,000
Affiliate Pollution Control and Solid Waste Disposal Bonds [Member]
Guarantor Obligations [Line Items]
Guaranty Fee	$ 78,000

Amount of commitments the company entered into.

No definition available.

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Aggregate amount of commitments and guarantor obligations.

+ References

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- Definition

An operating lease agreement between the registrant and an affiliated party.

+ References

No definition available.

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This item represents the portion of monthly guaranty fees collected representing the interest imputed and recognized under the prospective interest method on the present value of the contractually stipulated guarantee payments at inception of the contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

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-Paragraph 1

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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Represents the current and noncurrent portions of a debt security issued by a state, certain agencies or authorities, a local government, or development corporation to finance the construction of air- or water-pollution control facilities or sewage or solid waste disposal facilities pursuant to federal law. The bonds are backed by the credit of the beneficiary of the financing rather than the credit of the issuer.

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- Definition

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of required minimum rental payments maturing in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the forth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the third fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing in the second fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments maturing after the fifth fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

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