Lease agreement expiration year.

No definition available.

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- Definition

Amount of loans acquired from related party during the period.

+ References

No definition available.

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- Definition

Maximum amount of loans allowed to purchase from related party per year.

+ References

No definition available.

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- Definition

For an unclassified balance sheet, amounts of subvention support due from parties associated with the reporting entity.

+ References

No definition available.

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- Definition

Ratio of insurance contracts that are subject to reinsurance participation to all contracts in force.

+ References

No definition available.

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- Definition

Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
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-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

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.

+ References

No definition available.

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Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Apr. 30, 2023
Related Party Transaction [Line Items]
Subvention support receivable	$ 79	$ 66
Three Year Revolving Credit Facility Expiring 2026 [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity	5,000
Financing Support from Affiliates [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity	8,400	8,500
Financing Support from Affiliates [Member] \| Three Year Revolving Credit Facility Expiring 2026 [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity	5,000	5,000
Financing Support to Affiliates [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity	7,800	8,000
Toyota Financial Services International Corporation [Member]
Related Party Transaction [Line Items]
Declared and paid cash dividends	2,500
Toyota Financial Savings Bank [Member] \| Residential Mortgage [Member] \| Other Financing Support Arrangements [Member]
Related Party Transaction [Line Items]
Annual maximum participation	60
Loans purchased	$ 8	$ 8
TMNA [Member] \| Operational Support Arrangements [Member]
Related Party Transaction [Line Items]
Lease agreement expiration year	2032
TMNA [Member] \| Operational Support Arrangements [Member] \| Customer Service Center [Member]
Related Party Transaction [Line Items]
Lease agreement expiration year	2029
TMNA [Member] \| Operational Support Arrangements [Member] \| Dallas Data Center [Member]
Related Party Transaction [Line Items]
Lease agreement expiration year	2026
TMIS [Member] \| Operational Support Arrangements [Member]
Related Party Transaction [Line Items]
Risk ceded to reinsurers	99.00%
TMS [Member] \| Financing Support to Affiliates [Member] \| Subsequent Event [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity			$ 500