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Investment Securities (Investment Securities Pledged To Secure Borrowings And Public Deposits) (Details) $ in Thousands	Sep. 30, 2024 USD ($)
Investments, Debt and Equity Securities [Abstract]
To state and local government to secure public deposits, amortized cost	$ 1,811,227
To secure repurchased agreements, amortized cost	242,425
Other securities pledged, amortized cost	3,500,624
Total pledged securities, amortized cost	5,554,276
To state and local governments to secure public deposits, fair value	1,691,457
To secure repurchase agreements, fair value	231,156
Other securities pledged, fair value	3,332,102
Total pledged securities, fair value	$ 5,254,715

X

- Definition

Financial Instruments, Other, at Amortized Cost

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Financial Instruments, Owned, at Amortized Cost

+ References

No definition available.

+ Details

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X

- Definition

Pledged Assets, Not Separately Reported, Repurchase Agreement

+ References

No definition available.

+ Details

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X

- Definition

Pledged Assets Not Separately Reported Securities Pledged For State and Local Governments

+ References

No definition available.

+ Details

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X

- Definition

Pledged Assets, Separately Reported, Repurchase Agreement

+ References

No definition available.

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- Definition

Pledged Assets Separately Reported Securities Pledged For State and Local Governments At Fair Value

+ References

No definition available.

+ Details

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X

- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481961/940-320-45-2

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X

- Definition

Fair value of firm holdings in securities classified as other. Includes pledged and unpledged holdings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481961/940-320-45-2

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- References

No definition available.

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