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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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-Publisher FASB
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Section S99
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+ Details

Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2025	Apr. 30, 2025	Mar. 31, 2025
Related Party Transaction [Line Items]
Subvention support receivable	$ 178		$ 106
TMCC-affiliated companies [Member] \| Financing Support to Affiliates [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity		$ 5,000