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Regulatory Matters - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Banking And Thrift Disclosure [Abstract]
Change in allowance for credit losses percentage, during each quarter				25.00%
Percentage of cumulative amount of transition adjustments recognized in 2022	75.00%
Percentage of cumulative amount of transition adjustments recognized in 2023	50.00%
Percentage of cumulative amount of transition adjustments recognized in 2024	25.00%
Common equity tier one minimum ratio	2.50%
CET1 to risk-weighted assets	7.00%
Tier 1 capital to risk-weighted assets	8.50%
Total capital to risk-weighted assets	10.50%
Tier 1 capital to average quarterly assets	4.00%
Dividends declared to be paid	$ 214,375	$ 205,715	$ 193,140
Cash dividends paid to parent company	$ 352,800	$ 373,200	$ 256,700

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Capital minimum required plus capital conservation weighted assets.

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Change in allowance for credit losses percentage, during each quarter.

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Common equity tier one capital minimum required plus capital conservation weighted assets.

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Common equity tier one minimum ratio.

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Percentage of cumulative amount of transition adjustments recognized in year one.

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Percentage of cumulative amount of transition adjustments recognized in year three.

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Percentage of cumulative amount of transition adjustments recognized in year two.

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Tier one leverage minimum required plus capital conservation weighted assets.

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Tier one risk based one capital minimum required plus capital conservation weighted assets.

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This element represents disclosure of the total aggregate cash dividends paid to the entity by consolidated subsidiaries, by unconsolidated subsidiaries, and by 50 percent or less owned persons accounted for using the equity method.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

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