City Holding Company (Parent Company Only) Financial Information (Condensed Statements Of Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Equity Securities, FV-NI, Unrealized Loss									$ 816	$ (801)	$ 957
Interest expense	$ 1,842	$ 2,070	$ 2,585	$ 3,397	$ 4,318	$ 5,254	$ 6,242	$ 7,801	9,894	23,615	36,339
Income tax benefit	6,237	6,250	5,640	4,987	4,565	5,098	4,732	7,322	23,114	21,717	24,135
Net Income Available to Common Shareholders	$ 23,386	$ 22,732	$ 22,148	$ 19,814	$ 22,222	$ 20,126	$ 18,251	$ 28,996	88,080	89,595	89,352
Total Comprehensive Income									71,107	114,988	109,674
Parent Company
Condensed Financial Statements, Captions [Line Items]
Dividend Income, Operating									96,000	74,300	58,000
Equity Securities, FV-NI, Unrealized Loss									820	(1,018)	425
Other income									191	183	151
Income									97,011	73,465	58,576
Interest expense									0	100	182
Other expenses									1,610	1,810	1,794
Expenses									1,610	1,910	1,976
Income Before Income Tax Benefit and (Excess Dividends) Equity in Undistributed Net Income of Subsidiaries									95,401	71,555	56,600
Income tax benefit									(264)	(760)	(455)
Income Before (Excess Dividends) Equity in Undistributed Net Income of Subsidiaries									95,665	72,315	57,055
(Excess dividends) Equity in undistributed net income of subsidiaries									(7,585)	17,280	32,297
Net Income Available to Common Shareholders									88,080	89,595	89,352
Total Comprehensive Income									$ 71,107	$ 114,988	$ 109,674