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Fair Value of Assets and Liabilities - Schedule of Carrying Amount, Fair Value, and Fair Value Hierarchy of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financial Instruments - Assets
Held-to-Maturity: Fair Value	$ 4,411,003	$ 4,615,393
Carrying Amount
Financial Instruments - Assets
Held-to-Maturity: Fair Value	5,202,698	5,414,139
Loans	13,652,102	13,371,226
Financial Instruments - Liabilities
Time Deposits	2,664,679	1,705,737
Securities Sold Under Agreements to Repurchase	725,490	725,490
Other Debt	1,750,000	400,000
Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,411,003	4,615,393
Loans	12,640,810	12,386,615
Financial Instruments - Liabilities
Time Deposits	2,628,658	1,679,777
Securities Sold Under Agreements to Repurchase	716,935	718,614
Other Debt	1,731,736	402,877
Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	114,012	113,417
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	0	0
Other Debt	0	0
Significant Other Observable Inputs (Level 2) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	4,296,991	4,501,976
Loans	0	0
Financial Instruments - Liabilities
Time Deposits	2,628,658	1,679,777
Securities Sold Under Agreements to Repurchase	716,935	718,614
Other Debt	1,731,736	402,877
Significant Other Unobservable Inputs (Level 3) | Fair Value
Financial Instruments - Assets
Held-to-Maturity: Fair Value	0	0
Loans	12,640,810	12,386,615
Financial Instruments - Liabilities
Time Deposits	0	0
Securities Sold Under Agreements to Repurchase	$ 0	0
Other Debt		$ 0

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- Definition

Fair value of time deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

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Long term debt excluding capital lease obligations fair value.

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Fair value portion of securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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