Condensed Parent Company Information (Condensed Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total assets	$ 35,183,825	$ 36,531,205
Long term debt	242,077	244,220
Other liabilities	531,143	341,059
Stockholders' equity	3,342,628	3,670,352	$ 3,439,025	$ 3,467,685
Total liabilities and stockholders' equity	35,183,825	36,531,205
Hancock Whitney Corporation [Member]
Cash	127,184	90,277
Investment in bank subsidiaries	3,342,743	3,706,046
Investment in non-bank subsidiaries	25,634	24,726
Due from subsidiaries and other assets	14,939	17,323
Total assets	3,510,500	3,838,372
Long term debt	166,816	166,664
Other liabilities	1,056	1,356
Stockholders' equity	3,342,628	3,670,352
Total liabilities and stockholders' equity	$ 3,510,500	$ 3,838,372