Condensed Parent Company Information (Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net cash provided by operating activities	$ 625,742	$ 495,249	$ 842,021
Proceeds from sale of premises and equipment	6,144	33,130	62
Net cash provided by (used in) investing activities	274,756	(295,211)	662,358
Proceeds from issuance of long term debt	0	0	5,629
Repayment of long term debt	0	0	(480)
Dividends paid to stockholders	(130,840)	(104,697)	(94,458)
Other repurchases of common stock	(37,690)	0	(58,892)
Proceeds from dividend reinvestment and other incentive plans	4,120	3,815	3,577
Payroll tax remitted on net share settlement of equity awards	(9,358)	(5,681)	(7,386)
Net cash used in financing activities	(886,790)	(203,295)	(1,341,121)
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	13,708	(3,257)	163,258
CASH AND DUE FROM BANKS, BEGINNING	561,202	564,459	401,201
CASH AND DUE FROM BANKS, ENDING	574,910	561,202	564,459
Hancock Whitney Corporation [Member]
Cash flows from operating activities - principally dividends received from subsidiaries	227,125	198,093	192,816
Net cash provided by operating activities	227,125	198,093	192,816
Proceeds from sale of premises and equipment	320		855
Net cash provided by (used in) investing activities	320		855
Dividends paid to stockholders	(130,840)	(104,697)	(94,458)
Other repurchases of common stock	(37,690)		(58,892)
Proceeds from dividend reinvestment and other incentive plans	4,422	3,815	3,972
Payroll tax remitted on net share settlement of equity awards	(9,358)	(5,681)	(7,386)
Net cash used in financing activities	(173,466)	(106,563)	(156,764)
NET INCREASE (DECREASE) IN CASH AND DUE FROM BANKS	53,979	91,530	36,907
CASH AND DUE FROM BANKS, BEGINNING	218,714	127,184	90,277
CASH AND DUE FROM BANKS, ENDING	$ 272,693	$ 218,714	$ 127,184