Related Party Transactions - Related Party Transactions Included in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Mar. 31, 2017	Mar. 31, 2016
Finance receivables, net
Accounts receivable	$ 136	$ 120
Notes receivable under home loan programs	2	9
Deferred retail subvention income	(967)	(794)
Investments in operating leases, net
Investments in operating leases, net	38,152	36,488
Deferred lease subvention income	(1,174)	(1,057)
Other assets
Notes receivable from affiliates	823	1,177
Other receivables, net	202	7
Other liabilities
Unearned insurance premiums and contract revenues	2,154	1,985
Other payables, net	74	82
Notes payable	13	20
TMCC-affiliated companies [Member]
Investments in operating leases, net
Investments in operating leases, net	4	3
Other liabilities
Unearned insurance premiums and contract revenues	$ 332	$ 278

Amount of deferred operating lease subvention revenue from related parties.

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Amount of deferred retail subvention revenue from related parties.

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The unclassified amount of notes receivable from certain officers, directors, other members of management, and relocated employees under home loan programs.

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Amount receivable from related parties classified as other.

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Amount payable to related parties classified as other.

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The amount for notes payable (written promise to pay), due to related parties.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.

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Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date.

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