Unsecured Borrowings - Unsecured Long-Term Borrowings by Maturity Date (Parenthetical) (Detail) $ in Millions	Dec. 31, 2021 USD ($)
Debt Disclosure [Abstract]
2023	$ 91
2024	305
2025	270
2026	214
2027 and thereafter	5,360
Amount related to interest rate hedges on certain unsecured long-term borrowings	$ 6,240

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 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 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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