CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Interest income
Loans and leases	$ 168,102	$ 162,939
Securities	45,387	37,420
Due from banks - interest-bearing	93	297
Federal funds sold and securities purchased under resale agreements	10	154
Total interest income	213,592	200,810
Interest expense
Deposits	4,033	10,190
Federal funds purchased and securities sold under repurchase agreements	31
Subordinated debt	4,061	4,648
Other long-term debt	4,754	4,682
Total interest expense	12,879	19,520
Net interest income	200,713	181,290
Provision for credit losses on loans and leases, excluding covered loans	0
Provision for losses on covered loans	7,466	19,116
Net interest income after provision	193,247	162,174
Noninterest income
Trust and investment fees	33,654	35,638
Brokerage and mutual fund fees	5,028	5,661
Cash management and deposit transaction charges	11,168	11,725
International services	8,785	8,316
FDIC loss sharing income, net	866	8,605
Gain on disposal of assets	2,191	2,424
Gain on sale of securities	449	130
Other	13,559	21,558
Impairment loss on securities:
Total other-than-temporary impairment loss on securities	(2,432)	(4,510)
Less: Portion of loss recognized in other comprehensive income	2,432	4,346
Net impairment loss recognized in earnings		(164)
Total noninterest income	75,700	93,893
Noninterest expense
Salaries and employee benefits	120,245	111,012
Net occupancy of premises	13,686	13,346
Legal and professional fees	11,880	10,077
Information services	8,149	7,497
Depreciation and amortization	7,428	6,748
Amortization of intangibles	1,886	2,168
Marketing and advertising	6,816	6,518
Office services and equipment	3,948	4,606
Other real estate owned	12,094	14,489
FDIC assessments	4,479	9,806
Other operating	10,109	11,130
Total noninterest expense	200,720	197,397
Income before income taxes	68,227	58,670
Income taxes	21,719	17,886
Net income	46,508	40,784
Less: Net income attributable to noncontrolling interest	243	1,092
Net income attributable to City National Corporation	$ 46,265	$ 39,692
Net income per share, basic (in dollars per share)	$ 0.86	$ 0.75
Net income per share, diluted (in dollars per share)	$ 0.86	$ 0.74
Shares used to compute net income per share, basic	52,741	52,320
Shares used to compute net income per share, diluted	53,021	52,894
Dividends per share (in dollars per share)	$ 0.25	$ 0.20