City Holding Company (Parent Company Only) Financial Information (Condensed Statements Of Cash Flows) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net Income Available to Common Shareholders	$ 117,101,000	$ 114,365,000	$ 102,071,000
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized and Realized Investment Gains (Losses)	2,650,000	4,476,000	1,581,000
Deferred income tax expense (benefit)	381,000	(2,764,000)	1,469,000
Stock based compensation	3,522,000	3,213,000	3,276,000
Change in other assets	5,036,000	14,422,000	(20,643,000)
Change in other liabilities	(7,910,000)	(3,203,000)	20,068,000
Net Cash Provided by Operating Activities	131,896,000	137,580,000	115,817,000
Proceeds from sales	33,394,000	205,627,000	0
Proceeds from sales	1,599,000	536,000	449,000
Investing Activities
Payments for (Proceeds from) Loans and Leases	(147,840,000)	(223,785,000)	(102,991,000)
Net Cash (Used in) Provided by Investing Activities	(252,260,000)	14,680,000	(410,452,000)
Financing Activities
Dividends paid	(43,482,000)	(39,993,000)	(36,702,000)
Purchases of treasury stock	(17,896,000)	(60,134,000)	(26,449,000)
Net Cash Provided by (Used in) Financing Activities	189,477,000	(195,984,000)	(139,996,000)
Increase (Decrease) in Cash and Cash Equivalents	69,113,000	(43,724,000)	(434,631,000)
Cash and cash equivalents at beginning of period	156,276,000	200,000,000	634,631,000
Cash and Cash Equivalents at End of Period	225,389,000	156,276,000	200,000,000
Acquisition of Citizens Commerce Bancshares, Inc.	0	14,016,000	0
Parent Company
Operating Activities
Net Income Available to Common Shareholders	117,101,000	114,365,000	102,071,000
Adjustments to reconcile net income to net cash provided by operating activities:
Unrealized and Realized Investment Gains (Losses)	(149,000)	302,000	52,000
Deferred income tax expense (benefit)	(97,000)	(150,000)	(136,000)
Stock based compensation	3,522,000	3,213,000	3,277,000
Change in other assets	660,000	128,000	(465,000)
Change in other liabilities	(3,022,000)	(4,134,000)	(1,851,000)
Equity In Undistributed Earnings Of Subsidiaries	(5,603,000)	(7,048,000)	(12,997,000)
Net Cash Provided by Operating Activities	112,412,000	106,676,000	89,951,000
Proceeds from sales	0	0	61,000
Proceeds from sales	1,548,000	447,000	0
Investing Activities
Payments for (Proceeds from) Loans and Leases	67,000	52,000	55,000
Net Cash (Used in) Provided by Investing Activities	1,615,000	2,842,000	116,000
Financing Activities
Dividends paid	(43,482,000)	(39,993,000)	(36,702,000)
Purchases of treasury stock	(17,896,000)	(60,134,000)	(26,449,000)
Exercise of stock options	694,000	0	797,000
Net Cash Provided by (Used in) Financing Activities	(60,684,000)	(100,127,000)	(62,354,000)
Increase (Decrease) in Cash and Cash Equivalents	53,343,000	9,391,000	27,713,000
Cash and cash equivalents at beginning of period	63,988,000	54,597,000	26,884,000
Cash and Cash Equivalents at End of Period	117,331,000	63,988,000	54,597,000
Acquisition of Citizens Commerce Bancshares, Inc.	$ 0	$ 2,343,000	$ 0