Other Borrowed Funds	3 Months Ended
	Mar. 31, 2023
Debt Disclosure [Abstract]
Long-Term Debt	At March 31, 2023, the Company had $2,710.0 million in outstanding FHLB borrowings consisting of $850.0 million in fixed rate borrowings with tenors of up to one month and with an average fixed rate of 5.01%, $800.0 million in 2-month fixed rate borrowings with an average fixed rate of 5.11%, and $1,060.0 million in 3-month fixed rate borrowings with an average fixed rate of 5.12%, as compared to $2,327.0 million outstanding borrowings with the FHLB at December 31, 2022. The Company has remaining available lines of credit with the FHLB of approximately $3,678.7 million, subject to collateral availability at March 31, 2023. The borrowings are collateralized by certain loans with an advance equivalent collateral value of $6,388.7 million. As of March 31, 2023 and December 31, 2022, there were no long or short-term advances outstanding with the FHLB. As of March 31, 2023 and December 31, 2022, the Company had no material other borrowed funds.