CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Condensed Statement Of Financial Condition [Abstract]
Amortized cost	$ 6,300,696	$ 6,398,197
Available-for-sale, allowance for credit losses	449	458
Held to Maturity Fair value	419,752	427,115
Allowance for credit losses, Held-to-Maturity securities	7,646	8,286
Allowance for credit losses on loans and finance leases	$ 265,567	$ 260,464
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common Stock, Shares, Issued	223,663,116	223,663,116
Common stock, shares outstanding	179,788,698	182,709,059
Legal Surplus Amount	$ 168,484	$ 168,484
Treasury Stock Shares	43,874,418	40,954,057
Income tax expense	$ 8,468	$ 8,468