Unsecured Borrowings - Unsecured Long-Term Borrowings by Maturity Date (Parenthetical) (Detail) $ in Millions	Jun. 30, 2021 USD ($)
Debt Disclosure [Abstract]
2022	$ 6
2023	159
2024	505
2025	583
2026	422
2027 and thereafter	6,750
Amount related to interest rate hedges on certain unsecured long-term borrowings	$ 8,430

Amount related to interest rate hedges on certain unsecured long-term borrowings.

No definition available.

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Amount related to interest rate hedges on certain unsecured long-term borrowings maturing after year five following the current fiscal year.

No definition available.

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Amount related to interest rate hedges on certain unsecured long-term borrowings maturing during year five following the current fiscal year.

No definition available.

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Amount related to interest rate hedges on certain unsecured long-term borrowings maturing during year four following the current fiscal year.

No definition available.

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Amount Related To Interest Rate Hedges On Certain Unsecured Long Term Borrowings Maturing In Year One

No definition available.

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Amount related to interest rate hedges on certain unsecured long-term borrowings maturing during year three following the current fiscal year.

No definition available.

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Amount related to interest rate hedges on certain unsecured long-term borrowings maturing during year two following the current fiscal year.

No definition available.

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No definition available.

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