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Undivided Profits (Details)
$ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
Equity [Abstract]  
Threshold percentage of net profits exceeded by dividends declared, any calendar year (as percent) 75.00%
Threshold percentage of net profits exceeded by dividends declared, combined with preceding year (as percent) 75.00%
Statutory accounting practices, statutory amount available for dividend payments without regulatory approval $ 238.0
Tier 1 leverage capital required to be well capitalized to average assets (as percent) 0.05
Tier 1 risk-based capital required to be well capitalized to risk weighted assets (as percent) 0.08
Capital required to be well-capitalized to risk weighted assets (as percent) 0.10
Common equity Tier 1 ratio required to be well capitalized (as percent) 6.50%
Capital conservation buffer (as percent) 2.50%
CET1 ratio (as percent) 0.1202