CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest income
Loans and leases	$ 180,349	$ 175,435	$ 534,521	$ 508,366
Securities	44,182	40,893	133,118	117,951
Due from banks - interest-bearing	163	474	429	1,179
Federal funds sold and securities purchased under resale agreements	74	90	181	342
Total interest income	224,768	216,892	668,249	627,838
Interest expense
Deposits	3,316	8,535	10,914	28,742
Federal funds purchased and securities sold under repurchase agreements	9		42	2
Subordinated debt	6,125	4,419	14,494	13,701
Other long-term debt	5,396	4,622	15,685	13,960
Total interest expense	14,846	17,576	41,135	56,405
Net interest income	209,922	199,316	627,114	571,433
Provision for credit losses on loans and leases, excluding covered loans	2,000	7,500	3,000	7,500
Provision for losses on covered loans	18,089	5,147	38,848	25,979
Net interest income after provision	189,833	186,669	585,266	537,954
Noninterest income
Trust and investment fees	43,477	35,412	111,198	107,737
Brokerage and mutual fund fees	9,059	5,079	19,380	15,604
Cash management and deposit transaction charges	11,526	10,986	34,169	33,616
International services	9,819	10,352	28,621	27,683
FDIC loss sharing income (expense), net	1,667	(14,191)	(3,493)	(16,270)
Gain on disposal of assets	3,199	5,191	8,401	16,037
Gain on sale of securities	856	3,520	1,026	5,339
Gain on acquisition				8,164
Other	27,693	13,479	58,640	58,206
Impairment loss on securities:
Total other-than-temporary impairment loss on securities	(1,510)	(4,549)	(1,688)	(5,007)
Less: Portion of loss recognized in other comprehensive income	1,471	4,356	1,471	4,356
Net impairment loss recognized in earnings	(39)	(193)	(217)	(651)
Total noninterest income	107,257	69,635	257,725	255,465
Noninterest expense
Salaries and employee benefits	120,210	112,729	355,490	335,880
Net occupancy of premises	16,238	13,713	43,980	40,724
Legal and professional fees	11,757	14,242	34,996	39,109
Information services	8,660	7,906	25,348	23,738
Depreciation and amortization	8,324	6,930	23,765	20,582
Amortization of intangibles	1,932	2,105	5,336	6,377
Marketing and advertising	7,141	6,675	21,554	20,819
Office services and equipment	4,673	4,456	13,113	13,734
Other real estate owned	8,749	13,160	28,384	49,811
FDIC assessments	4,616	6,670	13,618	25,000
Other operating	15,586	9,051	37,538	31,092
Total noninterest expense	207,886	197,637	603,122	606,866
Income before income taxes	89,204	58,667	239,869	186,553
Income taxes	29,052	16,267	78,042	54,803
Net income	60,152	42,400	161,827	131,750
Less: Net income attributable to noncontrolling interest	372	1,002	1,024	3,189
Net income attributable to City National Corporation	$ 59,780	$ 41,398	$ 160,803	$ 128,561
Net income per share, basic (in dollars per share)	$ 1.10	$ 0.78	$ 2.98	$ 2.41
Net income per share, diluted (in dollars per share)	$ 1.10	$ 0.77	$ 2.97	$ 2.39
Shares used to compute net income per share, basic (in shares)	53,425	52,481	53,092	52,422
Shares used to compute net income per share, diluted (in shares)	53,711	52,720	53,376	52,882
Dividends per share (in dollars per share)	$ 0.25	$ 0.20	$ 0.75	$ 0.60