CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest Income
Loans and leases	$ 204,525	$ 186,999	$ 388,557	$ 356,696
Securities	41,196	43,471	83,268	85,046
Due from banks - interest-bearing	433	378	569	820
Federal funds sold and securities purchased under resale agreements	1,134	1,477	2,375	2,848
Total interest income	247,288	232,325	474,769	445,410
Interest Expense
Deposits	1,880	2,060	3,800	4,194
Federal funds purchased and securities sold under repurchase agreements	8		79
Subordinated debt	3,746	6,117	7,492	12,221
Other long-term debt	5,144	5,046	10,308	10,095
Total interest expense	10,778	13,223	21,679	26,510
Net interest income	236,510	219,102	453,090	418,900
(Reversal of) provision for credit losses on loans and leases, excluding covered loans	10,000	(1,000)	10,000	(1,000)
(Reversal of) provision for losses on covered loans	1,091	(1,461)	1,588	3,194
Net interest income after provision	225,419	221,563	441,502	416,706
Noninterest Income
Trust and investment fees	58,487	54,599	114,008	107,905
Brokerage and mutual fund fees	11,424	14,240	22,022	24,282
Cash management and deposit transaction charges	12,861	12,128	25,494	24,161
International services	11,774	11,483	22,442	21,878
FDIC loss sharing expense, net	(10,808)	(24,161)	(17,496)	(31,244)
Gain on disposal of assets	1,538	6,838	1,648	9,664
Gain on sale of securities	1,924	5,367	5,300	7,489
Other	25,975	20,853	50,897	38,460
Impairment loss on securities:
Total other-than-temporary impairment loss on securities	(634)	(565)	(699)	(565)
Less: Portion of loss recognized in other comprehensive income	363	317	363	317
Net impairment loss recognized in earnings	(271)	(248)	(336)	(248)
Total noninterest income	112,904	101,099	223,979	202,347
Noninterest Expense
Salaries and employee benefits	144,681	138,859	289,249	275,692
Net occupancy of premises	16,179	16,595	32,252	32,689
Legal and professional fees	17,348	18,393	34,286	31,343
Information services	10,648	9,463	20,508	18,809
Depreciation and amortization	9,508	7,885	24,490	15,713
Amortization of intangibles	1,226	1,454	2,603	2,941
Marketing and advertising	8,938	8,982	17,768	18,757
Office services and equipment	5,102	5,287	10,238	10,197
Other real estate owned	1,094	2,372	3,825	3,805
FDIC assessments	5,276	2,765	10,370	4,156
Other operating	11,660	9,527	20,513	18,332
Total noninterest expense	231,660	221,582	466,102	432,434
Income before income taxes	106,663	101,080	199,379	186,619
Income taxes	37,684	35,109	68,281	66,119
Net income	68,979	65,971	131,098	120,500
Less: Net income attributable to noncontrolling interest	480	510	1,033	1,209
Net income attributable to City National Corporation	68,499	65,461	130,065	119,291
Less: Dividends on preferred stock	4,094	4,094	8,188	8,188
Net income available to common shareholders	$ 64,405	$ 61,367	$ 121,877	$ 111,103
Net income per common share, basic (in dollars per share)	$ 1.15	$ 1.11	$ 2.17	$ 2.01
Net income per common share, diluted (in dollars per share)	$ 1.13	$ 1.09	$ 2.14	$ 1.98
Weighted-average common shares outstanding, basic (in shares)	55,748	54,957	55,586	54,824
Weighted-average common shares outstanding, diluted (in shares)	56,663	55,632	56,484	55,541
Dividends per common share (in dollars per share)	$ 0.35	$ 0.33	$ 0.70	$ 0.66