City Holding Company (Parent Company Only) Financial Information (Condensed Statements Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Activities
Net Income Available to Common Shareholders	$ 30,672	$ 27,374	$ 22,683	$ 21,342	$ 23,386	$ 22,732	$ 22,148	$ 19,814	$ 102,071	$ 88,080	$ 89,595
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized and Realized Investment Gains (Losses)									1,581	(816)	801
Deferred income tax expense									1,469	2,185	2,640
Stock based compensation									3,276	3,121	3,253
Change in other assets									(20,643)	(8,737)	(13,790)
Change in other liabilities									20,068	11,731	11,974
Net Cash Provided by Operating Activities									115,817	102,273	89,795
Proceeds from Sale of Debt Securities, Available-for-sale									0	0	30,307
Investing Activities
Payments for (Proceeds from) Loans and Leases									(102,991)	76,992	(3,911)
Net Cash Used in Investing Activities									(410,452)	(191,167)	(285,286)
Financing Activities
Repayment of long-term debt									0	0	(4,056)
Dividends paid									(36,702)	(36,138)	(36,673)
Purchases of treasury stock									(26,449)	(58,678)	(36,481)
Exercise of stock options									798	691	223
Net Cash (Used) Provided by Financing Activities									(139,996)	194,866	584,006
(Decrease) Increase in Cash and Cash Equivalents									(434,631)	105,972	388,515
Cash and cash equivalents at beginning of period				634,631				528,659	634,631	528,659	140,144
Cash and Cash Equivalents at End of Period	200,000				634,631				200,000	634,631	528,659
Parent Company
Operating Activities
Net Income Available to Common Shareholders									102,071	88,080	89,595
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized and Realized Investment Gains (Losses)									52	(820)	1,018
Deferred income tax expense									(136)	(194)	(255)
Depreciation, Amortization and Accretion, Net									0	0	1
Stock based compensation									3,277	3,121	3,253
Change in other assets									(465)	89	(284)
Change in other liabilities									(1,851)	(2,775)	(2,936)
Equity In Undistributed Earnings Of Subsidiaries									(12,997)	7,585	(17,280)
Net Cash Provided by Operating Activities									89,951	95,086	73,112
Proceeds from Sale of Debt Securities, Available-for-sale									61	3,443	0
Investing Activities
Payments for (Proceeds from) Loans and Leases									55	145	39
Net Cash Used in Investing Activities									116	3,588	39
Financing Activities
Repayment of long-term debt									0	0	(4,056)
Dividends paid									(36,702)	(36,138)	(36,673)
Purchases of treasury stock									(26,449)	(58,678)	(36,481)
Exercise of stock options									797	691	223
Net Cash (Used) Provided by Financing Activities									(62,354)	(94,125)	(76,987)
(Decrease) Increase in Cash and Cash Equivalents									27,713	4,549	(3,836)
Cash and cash equivalents at beginning of period				$ 26,884				$ 22,335	26,884	22,335	26,171
Cash and Cash Equivalents at End of Period	$ 54,597				$ 26,884				$ 54,597	$ 26,884	$ 22,335