Financing receivable allowance for credit losses increase.

No definition available.

Name:	tmcc_FinancingReceivableAllowanceForCreditLossesIncrease
Namespace Prefix:	tmcc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Summary of significant accounting policies.

+ References

No definition available.

+ Details

Name:	tmcc_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	tmcc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

Name:	us-gaap_OperatingLeaseLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

+ Details

Name:	us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Description of a specific restructuring plan and related activities including the facts and circumstances leading to the restructuring or decision to exit an activity, and the expected completion date. This concept and related items would be utilized for each plan if multiple exit plans have been implemented in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(a))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

+ Details

Name:	us-gaap_RestructuringAndRelatedActivitiesDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201602Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AdjustmentsForNewAccountingPronouncementsAxis=us-gaap_AccountingStandardsUpdate201613Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Interim Financial Data - Additional Information (Details) - USD ($) $ in Millions		9 Months Ended
	Apr. 01, 2020	Dec. 31, 2019	Apr. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Restructuring and related activities, description		On April 16, 2019, we announced that we will restructure our field operations over the next two years to better serve our dealer partners by streamlining our field office structure into three regional locations and investing in new technology. Costs associated with this restructure are not expected to be significant.
Operating lease right-of-use assets		$ 110
Operating lease liabilities		116
Accounting Standards Update 2016-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating lease right-of-use assets		77	$ 115
Operating lease liabilities		$ 77	$ 122
Accounting Standards Update 2016-13 [Member] \| Minimum [Member] \| Scenario Forecast [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of increase in allowance for credit losses on finance receivables with cumulative-effect adjustment to opening retained earnings	40.00%
Accounting Standards Update 2016-13 [Member] \| Maximum [Member] \| Scenario Forecast [Member]
Summary Of Significant Accounting Policies [Line Items]
Percentage of increase in allowance for credit losses on finance receivables with cumulative-effect adjustment to opening retained earnings	60.00%