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Segment Information - Information about Company's Segments (Parenthetical) (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]          
Taxable-equivalent adjustment $ 14.3 $ 11.8 $ 41.7 $ 25.8  
Average total assets $ 204,266.0 187,395.0 $ 204,266.0 187,395.0 $ 190,252.0
Hospitality [Member]          
Segment Reporting Information [Line Items]          
Average total assets   $ 1,170.0   $ 1,170.0