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Fair Value of financial instruments- Additional Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Letter Of Credit
Commitments and contingencies
Fair Value Disclosure Off balance Sheet Risks Face Amount Asset	$ 35	$ 31
Commitments to extend credit
Commitments and contingencies
Fair Value Disclosure Off balance Sheet Risks Face Amount Asset	$ 9,700	$ 9,500

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- Definition

The face amount of financial assets, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

No definition available.

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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.

+ Details

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- Details

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