City National 10-Q 12 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Oct. 31, 2013
Document and Entity Information	'	'
Entity Registrant Name	'CITY NATIONAL CORP	'
Entity Central Index Key	'0000201461	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-13	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	54,403,877
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$301,106	$151,969
Due from banks - interest-bearing	1,045,608	246,336
Federal funds sold and securities purchased under resale agreements	200,000	17,100
Securities available-for-sale - cost $6,912,931 and $9,057,238 at September 30, 2013 and December 31, 2012, respectively:	'	'
Securities pledged as collateral	13,638	48,697
Held in portfolio	6,881,492	9,157,292
Securities held-to-maturity - fair value $1,608,074 and $1,446,599 at September 30, 2013 and December 31, 2012, respectively	1,649,520	1,398,403
Trading securities	51,451	115,059
Loans and leases, excluding covered loans	16,566,133	14,818,295
Less: Allowance for loan and lease losses	295,947	277,888
Loans and leases, excluding covered loans, net	16,270,186	14,540,407
Covered loans, net of allowance for loan losses	754,190	986,223
Net loans and leases	17,024,376	15,526,630
Premises and equipment, net	168,600	149,433
Deferred tax asset	196,021	124,461
Goodwill	642,622	642,622
Customer-relationship intangibles, net	42,343	48,139
Affordable housing investments	182,088	154,011
Customers' acceptance liability	1,661	7,859
Other real estate owned ($29,818 and $58,276 covered by FDIC loss share at September 30, 2013 and December 31, 2012, respectively)	48,723	79,303
FDIC indemnification asset	101,124	150,018
Other assets	509,031	601,160
Total assets	29,059,404	28,618,492
Liabilities	'	'
Demand deposits	15,205,973	14,264,797
Interest checking deposits	2,247,433	2,459,972
Money market deposits	6,613,298	5,610,844
Savings deposits	436,340	398,824
Time deposits-under $100,000	181,676	203,422
Time deposits-$100,000 and over	552,149	564,496
Total deposits	25,236,869	23,502,355
Short-term borrowings	2,588	1,423,798
Long-term debt	719,326	706,051
Reserve for off-balance sheet credit commitments	25,873	24,837
Acceptances outstanding	1,661	7,859
Other liabilities	445,359	407,162
Total liabilities	26,431,676	26,072,062
Redeemable noncontrolling interest	39,840	41,112
Commitments and contingencies	'	'
Shareholders' equity	'	'
Preferred stock, par value $1.00 per share; 5,000,000 shares authorized; 175,000 shares issued at September 30, 2013 and December 31, 2012	169,920	169,920
Common stock, par value $1.00 per share; 75,000,000 shares authorized; 54,400,047 and 53,885,886 shares issued at September 30, 2013 and December 31, 2012, respectively	54,400	53,886
Additional paid-in capital	519,760	490,339
Accumulated other comprehensive (loss) income	-10,355	86,582
Retained earnings	1,879,240	1,738,957
Treasury shares, at cost - 485,081 and 669,454 shares at September 30, 2013 and December 31, 2012, respectively	-25,077	-34,366
Total common shareholders' equity	2,417,968	2,335,398
Total shareholders' equity	2,587,888	2,505,318
Total liabilities and shareholders' equity	$29,059,404	$28,618,492

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
CONSOLIDATED BALANCE SHEETS	'	'
Securities available-for-sale, cost (in dollars)	$6,912,931	$9,057,238
Securities held-to-maturity, fair value (in dollars)	1,608,074	1,446,599
Other real estate owned, covered by FDIC loss share (in dollars)	$29,818	$58,276
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	175,000	175,000
Common stock, par value (in dollars per share)	$1	$1
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	54,400,047	53,885,886
Treasury shares	485,081	669,454

CONSOLIDATED_STATEMENTS_OF_INC

CONSOLIDATED STATEMENTS OF INCOME (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Interest income	'	'	'		'
Loans and leases	$186,049	$180,349	$530,398		$534,521
Securities	40,078	44,182	125,563		133,118
Due from banks - interest-bearing	403	163	674		429
Federal funds sold and securities purchased under resale agreements	1,563	74	4,253		181
Total interest income	228,093	224,768	660,888		668,249
Interest expense	'	'	'		'
Deposits	2,927	3,316	8,856		10,914
Federal funds purchased and securities sold under repurchase agreements	1	9	401		42
Subordinated debt	6,129	6,125	18,352		14,494
Other long-term debt	4,765	5,396	14,467		15,685
Other short-term borrowings	'	'	549		'
Total interest expense	13,822	14,846	42,625		41,135
Net interest income	214,271	209,922	618,263		627,114
Provision for credit losses on loans and leases, excluding covered loans	'	2,000	'		3,000
Provision for losses on covered loans	2,496	18,089	461		38,848
Net interest income after provision	211,775	189,833	617,802		585,266
Noninterest income	'	'	'		'
Trust and investment fees	49,430	43,477	145,913		111,198
Brokerage and mutual fund fees	7,307	9,059	23,480		19,380
Cash management and deposit transaction charges	12,263	11,526	38,152		34,169
International services	10,932	9,819	31,462		28,621
FDIC loss sharing (expense) income, net	-20,992	1,667	-51,821		-3,493
Gain on disposal of assets	3,092	3,199	5,155		8,401
Gain on sale of securities	5,788	856	12,624		1,026
Other	21,207	27,693	59,981		58,640
Impairment loss on securities:	'	'	'		'
Total other-than-temporary impairment loss on securities	-144	-1,510	-326		-1,688
Less: Portion of loss recognized in other comprehensive income	0	1,471	0		1,471
Net impairment loss recognized in earnings	-144	-39	-326		-217
Total noninterest income	88,883	107,257	264,620		257,725
Noninterest expense	'	'	'		'
Salaries and employee benefits	129,049	120,210	384,412		355,490
Net occupancy of premises	16,074	16,238	48,268		43,980
Legal and professional fees	10,374	11,757	35,149		34,996
Information services	9,876	8,660	28,450		25,348
Depreciation and amortization	7,827	8,324	24,248		23,765
Amortization of intangibles	1,932	1,932	5,795		5,336
Marketing and advertising	8,244	7,141	25,204		21,554
Office services and equipment	4,821	4,673	14,801		13,113
Other real estate owned	5,196	8,749	14,831		28,384
FDIC assessments	3,776	4,616	12,920		13,618
Other operating	12,195	15,586	38,055		37,538
Total noninterest expense	209,364	207,886	632,133		603,122
Income before income taxes	91,294	89,204	250,289		239,869
Income taxes	27,052	29,052	73,735		78,042
Net income	64,242	60,152	176,554		161,827
Less: Net income attributable to noncontrolling interest	609	372	1,657		1,024
Net income attributable to City National Corporation	63,633	59,780	174,897	[1]	160,803	[1]
Less: Dividends on preferred stock	2,407	'	7,219		'
Net income available to common shareholders	$61,226	$59,780	$167,678		$160,803
Net income per common share, basic (in dollars per share)	$1.12	$1.10	$3.07		$2.98
Net income per common share, diluted (in dollars per share)	$1.10	$1.10	$3.04		$2.97
Weighted average common shares outstanding, basic (in shares)	54,274	53,425	54,039		53,092
Weighted average common shares outstanding, diluted (in shares)	54,820	53,711	54,464		53,376
Dividends per common share (in dollars per share)	$0.25	$0.25	$0.50		$0.75
[1]	Net income excludes net income attributable to redeemable noncontrolling interest of $1,657 and $1,024 for the nine month periods ended September 30, 2013 and 2012, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 18 of the Notes to the Unaudited Consolidated Financial Statements.

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended			9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'		'		'
Net income	$64,242	$60,152		$176,554		$161,827
Securities available-for-sale:	'	'		'		'
Net unrealized (losses) gains arising during the period	-13,573	12,042		-90,215		21,715
Reclassification adjustment for net gains included in net income	-3,367	-28		-6,666		-267
Non-credit related impairment loss	'	-856		'		-856
Net change on cash flow hedges	'	-42	[1]	-56	[1]	-125	[1]
Pension liability adjustment	'	'		'		1,085
Total other comprehensive (loss) income	-16,940	11,116		-96,937		21,552
Comprehensive income	47,302	71,268		79,617		183,379
Less: Comprehensive income attributable to noncontrolling interest	609	372		1,657		1,024
Comprehensive income attributable to City National Corporation	$46,693	$70,896		$77,960		$182,355
[1]	See Note 12 for additional information on other comprehensive income related to cash flow hedges.

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Cash Flows From Operating Activities	'	'	'
Net income	$60,152	$176,554	$161,827
Adjustments to net income:	'	'	'
Provision for credit losses on loans and leases, excluding covered loans	2,000	'	3,000
Provision for losses on covered loans	18,089	461	38,848
Amortization of intangibles	1,932	5,795	5,336
Depreciation and amortization	8,324	24,248	23,765
Share-based employee compensation expense	'	16,283	13,694
Deferred income tax (benefit) expense	'	-1,888	926
Gain on disposal of assets	-3,199	-5,155	-8,401
Gain on sale of securities	-856	-12,624	-1,026
Impairment loss on securities	39	326	217
Other, net	'	24,759	-29,115
Net change in:	'	'	'
Trading securities	'	64,772	-2,187
Other assets and other liabilities, net	'	81,814	75,109
Net cash provided by operating activities	'	375,345	281,993
Cash Flows From Investing Activities	'	'	'
Purchase of securities available-for-sale	'	-1,775,702	-2,997,503
Sales of securities available-for-sale	1,000	1,835,775	6,216
Maturities and paydowns of securities available-for-sale	'	2,064,288	2,699,482
Purchase of securities held-to-maturity	'	-277,199	-728,064
Maturities and paydowns of securities held-to-maturity	'	23,826	20,124
Loan originations, net of principal collections	'	-1,436,714	-779,081
Net payments for premises and equipment	'	-43,415	-23,039
Net cash paid in acquisitions	'	'	-123,746
Other investing activities, net	'	48,429	23,976
Net cash provided by (used in) investing activities	'	439,288	-1,901,635
Cash Flows From Financing Activities	'	'	'
Net increase in deposits	'	1,734,514	2,124,734
Net decrease in federal funds purchased	'	-1,214,200	-50,000
Issuance of long-term debt	'	35,289	159,986
Repayment of long-term debt	'	-231,382	-252,221
Proceeds from exercise of stock options	'	24,963	21,653
Tax benefit from exercise of stock options	'	3,749	2,959
Cash dividends paid	'	-34,355	-40,029
Other financing activities, net	'	-1,902	-2,416
Net cash provided by financing activities	'	316,676	1,964,666
Net increase in cash and cash equivalents	'	1,131,309	345,024
Cash and cash equivalents at beginning of year	'	415,405	244,814
Cash and cash equivalents at end of period	589,838	1,546,714	589,838
Cash paid during the period for:	'	'	'
Interest	'	56,100	47,903
Income taxes	'	11,478	53,783
Non-cash investing activities:	'	'	'
Transfer of loans to other real estate owned	'	18,637	58,202
Transfer of SERP liability to equity	'	'	8,348
Assets acquired (liabilities assumed) in acquisitions:	'	'	'
Loans and leases	318,301	'	318,301
Other borrowings	($320,856)	'	($320,856)

CONSOLIDATED_STATEMENTS_OF_CHA

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $)		Total	Preferred stock	Common stock	Additional paid-in capital	Accumulated other comprehensive income (loss)	Retained earnings	Treasury shares
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2011		$2,144,849	'	$53,886	$489,200	$72,372	$1,611,969	($82,578)
Balance (in shares) at Dec. 31, 2011		'	'	53,885,886	'	'	'	'
Increase (Decrease) in Stockholders' Equity		'	'	'	'	'	'	'
Net income	[1]	160,803	'	'	'	'	160,803	'
Other comprehensive income (loss), net of tax		21,552	'	'	'	21,552	'	'
Issuance of shares under share-based compensation plans		19,527	'	'	-27,171	'	'	46,698
Share-based employee compensation expense		12,825	'	'	12,825	'	'	'
Tax benefit from share-based compensation plans		953	'	'	953	'	'	'
Dividends : Common		-40,355	'	'	'	'	-40,355	'
Net change in deferred compensation plans		789	'	'	787	'	'	2
Change in redeemable noncontrolling interest		1,033	'	'	1,033	'	'	'
Other	[2]	8,348	'	'	8,348	'	'	'
Balance at Sep. 30, 2012		2,330,324	'	53,886	485,975	93,924	1,732,417	-35,878
Balance (in shares) at Sep. 30, 2012		'	'	53,885,886	'	'	'	'
Balance at Dec. 31, 2012		2,505,318	169,920	53,886	490,339	86,582	1,738,957	-34,366
Balance (in shares) at Dec. 31, 2012		'	'	53,885,886	'	'	'	'
Increase (Decrease) in Stockholders' Equity		'	'	'	'	'	'	'
Net income	[1]	174,897	'	'	'	'	174,897	'
Other comprehensive income (loss), net of tax		-96,937	'	'	'	-96,937	'	'
Issuance of shares under share-based compensation plans		21,546	'	514	11,742	'	'	9,290
Issuance of shares under share-based compensation plans (in shares)		'	'	514,161	'	'	'	'
Share-based employee compensation expense		13,241	'	'	13,241	'	'	'
Tax benefit from share-based compensation plans		3,646	'	'	3,646	'	'	'
Dividends : Preferred		-7,219	'	'	'	'	-7,219	'
Dividends : Common		-27,395	'	'	'	'	-27,395	'
Net change in deferred compensation plans		772	'	'	773	'	'	-1
Change in redeemable noncontrolling interest		19	'	'	19	'	'	'
Balance at Sep. 30, 2013		$2,587,888	$169,920	$54,400	$519,760	($10,355)	$1,879,240	($25,077)
Balance (in shares) at Sep. 30, 2013		'	'	54,400,047	'	'	'	'
[1]	Net income excludes net income attributable to redeemable noncontrolling interest of $1,657 and $1,024 for the nine month periods ended September 30, 2013 and 2012, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 18 of the Notes to the Unaudited Consolidated Financial Statements.
[2]	Conversion of pension liability to equity due to SERP amendment. See Note 15 for additional information.

CONSOLIDATED_STATEMENTS_OF_CHA1

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY	'	'
Net income attributable to redeemable noncontrolling interest	$1,657	$1,024

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Summary of Significant Accounting Policies	'
Summary of Significant Accounting Policies	'
	Note 1. Summary of Significant Accounting Policies
	Organization
	City National Corporation (the “Corporation”) is the holding company for City National Bank (the “Bank”). The Bank delivers banking, trust and investment services through 77 offices in Southern California, the San Francisco Bay area, Nevada, New York City, Nashville, Tennessee and Atlanta, Georgia. As of September 30, 2013, the Corporation had five consolidated investment advisory affiliates and one unconsolidated subsidiary, Business Bancorp Capital Trust I. Because the Bank comprises substantially all of the business of the Corporation, references to the “Company” mean the Corporation and the Bank together. The Corporation is approved as a financial holding company pursuant to the Gramm-Leach-Bliley Act of 1999.
	Consolidation
	The consolidated financial statements of the Company include the accounts of the Corporation, its non-bank subsidiaries, the Bank and the Bank’s wholly owned subsidiaries, after the elimination of all material intercompany transactions. It also includes noncontrolling interest, which is the portion of equity in a subsidiary not attributable to a parent. Redeemable noncontrolling interests are noncontrolling ownership interests that are redeemable at the option of the holder or outside the control of the issuer. The redeemable noncontrolling interests of third parties in the Corporation’s investment advisory affiliates are not considered to be permanent equity and are reflected in the mezzanine section between liabilities and equity in the consolidated balance sheets. Noncontrolling interests’ share of subsidiary earnings is reflected as Net income attributable to noncontrolling interest in the consolidated statements of income.
	The Company’s investment management and wealth advisory affiliates are organized as limited liability companies. The Corporation generally owns a majority position in each affiliate and certain management members of each affiliate own the remaining shares. The Corporation has contractual arrangements with its affiliates whereby a percentage of revenue is allocable to fund affiliate operating expenses (“operating share”) while the remaining portion of revenue (“distributable revenue”) is allocable to the Corporation and the noncontrolling owners. All majority-owned affiliates that meet the prescribed criteria for consolidation are consolidated. The Corporation’s interests in investment management affiliates in which it holds a noncontrolling share are accounted for using the equity method. Additionally, the Company has various interests in variable interest entities (“VIEs”) that are not required to be consolidated. See Note 17 for a more detailed discussion on VIEs.
	Use of Estimates
	The Company’s accounting and reporting policies conform to generally accepted accounting principles (“GAAP”) and practices in the financial services industry. To prepare the financial statements in conformity with GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, and income and expenses during the reporting period. Circumstances and events that differ significantly from those underlying the Company’s estimates and assumptions could cause actual financial results to differ from those estimates. The material estimates included in the financial statements relate to the allowance for loan and lease losses, the reserve for off-balance sheet credit commitments, other real estate owned (“OREO”), valuation of share-based compensation awards, income taxes, goodwill and intangible asset impairment, securities impairment, private equity and alternative investment impairment, valuation of assets and liabilities acquired in business combinations, including contingent consideration liabilities, subsequent valuations of acquired impaired loans, Federal Deposit Insurance Corporation (“FDIC”) indemnification assets, valuation of noncontrolling interest, and the valuation of financial assets and liabilities reported at fair value.
	The Company has applied its critical accounting policies and estimation methods consistently in all periods presented in these financial statements. The Company’s estimates and assumptions are expected to change as changes in market conditions and the Company’s portfolio occur in subsequent periods.
	Basis of Presentation
	The Company is on the accrual basis of accounting for income and expenses. The results of operations reflect any adjustments, all of which are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q, and which, in the opinion of management, are necessary for a fair presentation of the results for the periods presented. In accordance with the usual practice of banks, assets and liabilities of individual trust, agency and fiduciary funds have not been included in the financial statements. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.
	The results for the 2013 interim periods are not necessarily indicative of the results expected for the full year. The Company has not made any significant changes in its critical accounting policies or in its estimates and assumptions from those disclosed in its 2012 Annual Report other than the adoption of new accounting pronouncements and other authoritative guidance that became effective for the Company on or after January 1, 2013. Refer to Accounting Pronouncements for discussion of accounting pronouncements adopted in 2013.
	Certain prior period amounts have been reclassified to conform to the current period presentation.
	Accounting Pronouncements
	The following is a summary of accounting pronouncements that became effective during the nine months ended September 30, 2013:
	·                  In October 2012, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2012-06, Business Combinations (Topic 805): Subsequent Accounting for an Indemnification Asset Recognized at the Acquisition Date as a Result of a Government-Assisted Acquisition of a Financial Institution (“ASU 2012-06”). ASU 2012-06 clarifies existing guidance on the subsequent measurement of an indemnification asset recognized as a result of a government-assisted acquisition of a financial institution. Existing guidance specifies that an acquirer must record an indemnification asset at the same time as it recognizes the indemnified item in a business combination. The indemnification asset is initially and subsequently measured on the same basis as the indemnified item, subject to any contractual limitations on its amount or management’s assessment of its collectability. Under ASU 2012-06, when there is a subsequent change in the cash flows expected to be collected on the indemnified asset, the reporting entity should subsequently measure the indemnification asset on the same basis as the underlying loans by taking into account the contractual limitation of the indemnification agreement. Any amortization of changes in value shall be limited to the lesser of the contractual term of the indemnification agreement and the remaining life of the indemnified assets. Adoption of ASU 2012-06 on January 1, 2013 did not have a significant impact on the Company’s consolidated financial statements.
	·                  In January 2013, the FASB issued ASU 2013-01, Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets and Liabilities (“ASU 2013-01”). ASU 2013-01 clarifies that ordinary trade receivables and other receivables are not in the scope of ASU 2011-11, Balance Sheet (Topic 210), Disclosures about Offsetting Assets and Liabilities. Specifically, ASU 2011-11 applies only to derivatives, repurchase agreements and reverse repurchase agreements, and securities borrowing and securities lending transactions that are either offset in accordance with specific criteria contained in the Accounting Standards Codification (“ASC”) or subject to a master netting arrangement or similar agreement. The Company adopted ASU 2013-01 in its first quarter 2013 reporting. Refer to Note 13 for balance sheet offsetting disclosures.
	·                  In February 2013, the FASB issued ASU 2013-02, Other Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Other Comprehensive Income (“ASU 2013-02”). The provisions in the ASU supersede and replace the presentation requirements for reclassifications out of accumulated other comprehensive income (“AOCI”) in ASU 2011-05 and 2011-12. ASU 2013-02 requires entities to disclose additional information about reclassification adjustments, including (1) changes in AOCI balances by component and (2) significant items reclassified out of AOCI. The new disclosure requirements are effective for fiscal years, and interim periods within those years, beginning after December 15, 2012. The Company adopted ASU 2013-02 for its first quarter 2013 reporting. Adoption of the new guidance did not have a significant impact on the Company’s consolidated financial statements.
	·                  In July 2013, the FASB issued ASU 2013-10, Derivatives and Hedging (Topic 815): Inclusion of the Fed Funds Effective Swap Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. The new guidance permits the Fed Funds Effective Swap Rate to be used as a U.S. benchmark interest rate for hedge accounting purposes in addition to U.S. Government Treasury rates and LIBOR. The ASU became effective for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The Company periodically enters into interest-rate swap agreements to reduce cash flow variability on pools of floating rate loans. The swaps are tied to either the Prime rate or LIBOR consistent with the pricing index on the underlying loans. The Company does not use the Fed Funds rate for loan pricing and did not have interest rate swaps designated as hedging instruments as of September 30, 2013. Accordingly, adoption of the new guidance did not have an impact on the Company’s consolidated financial statements.
	The following is a summary of recently issued accounting pronouncements:
	·                  In February 2013, the FASB issued ASU 2013-04, Liabilities (Topic 405): Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date (“ASU 2013-04”). ASU 2013-04 provides guidance for the recognition, measurement and disclosure of obligations resulting from joint and several liability arrangements. Examples of obligations within the scope of the ASU include debt arrangements, other contractual obligations and settled litigation. ASU 2013-04 requires entities to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation within the scope of the guidance is fixed at the reporting date, as the sum of (1) the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors, and (2) any additional amount the reporting entity expects to pay on behalf of its co-obligors. Required disclosures include a description of the joint-and-several arrangement and the total outstanding amount of the obligation for all joint parties. The ASU is effective for public entities for fiscal years, and interim periods within those years, beginning after December 15, 2013. Adoption of the new guidance is not expected to have a significant impact on the Company’s consolidated financial statements.
	·                  In July 2013, the FASB issued ASU 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The new guidance requires an entity to present an unrecognized tax benefit, or portion thereof, in the statement of financial position as a reduction to a deferred tax asset for a net operating loss carryforward or a tax credit carryforward, except as follows. To the extent a net operating loss carryforward or tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position, or the tax law of the applicable jurisdiction does not require the entity to use and the entity does not intend to use the deferred tax asset for such purpose, the unrecognized tax benefit should be presented in the statement of financial position as a liability and should not be combined with deferred tax assets. The ASU is effective for annual periods, and interim periods within those years, beginning after December 15, 2013. Adoption of the new guidance is not expected to have a significant impact on the Company’s consolidated financial statements.

Business_Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2013
Business Combinations	'
Business Combinations	'
	Note 2. Business Combinations
	Rochdale Investment Management
	On July 2, 2012, the Company acquired Rochdale Investment Management, LLC and associated entities (collectively, “Rochdale”), a New York City-based investment firm that manages assets for affluent and high-net-worth clients and their financial advisors across the nation. The investment firm was acquired with both cash and contingent consideration, and operates as a wholly owned subsidiary of the Bank.
	The Company recognized goodwill of approximately $86.5 million and a client contract intangible of $19.0 million related to the acquisition. The Company recognized a contingent consideration liability at its fair value of $46.7 million. The contingent consideration arrangements require the Company to pay additional cash consideration to Rochdale’s former shareholders at certain points in time over the next six years if certain criteria, such as revenue growth and pre-tax margin, are met. The fair value of the contingent consideration was estimated using a probability-weighted discounted cash flow model. Although the acquisition agreement does not set a limit on the total payment, the Company estimates that the total consideration payment could be in the range of $32 million to $74 million, but will ultimately be determined based on actual future results. The contingent consideration liability is remeasured to fair value at each reporting date until its settlement.
	First American Equipment Finance
	The Company acquired First American Equipment Finance (“FAEF”), a privately owned equipment leasing company, in an all-cash transaction on April 30, 2012. Headquartered in Rochester, New York, FAEF leases technology and office equipment nationwide. Its clients include educational institutions, hospitals and health systems, large law firms, insurance underwriters, enterprise businesses, professional service businesses and nonprofit organizations. FAEF operates as a wholly owned subsidiary of the Bank.
	Excluding the effects of acquisition accounting adjustments, the Company acquired approximately $343.0 million in assets and assumed $325.0 million in liabilities. The Company acquired lease receivables with a fair value of $318.3 million and assumed borrowings and nonrecourse debt with a fair value of $320.9 million. The Company recognized goodwill of approximately $68.4 million.

Fair_Value_Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements	'
Fair Value Measurements	'
	Note 3. Fair Value Measurements
	The following tables summarize assets and liabilities measured at fair value as of September 30, 2013 and December 31, 2012 by level in the fair value hierarchy:
					Fair Value Measurements at Reporting Date Using
	(in thousands)	Balance as of			Quoted Prices in			Significant Other			Significant
		September 30,			Active Markets			Observable			Unobservable
		2013			Level 1			Inputs			Inputs
								Level 2			Level 3
	Measured on a Recurring Basis
	Assets
	Securities available-for-sale:
	U.S. Treasury	$	35,425		$	35,425		$	—		$	—
	Federal agency - Debt	1,002,447			—			1,002,447			—
	Federal agency - MBS	197,173			—			197,173			—
	CMOs - Federal agency	4,742,584			—			4,742,584			—
	CMOs - Non-agency	43,312			—			43,312			—
	State and municipal	475,786			—			429,570			46,216
	Other debt securities	392,356			—			376,984			15,372
	Equity securities and mutual funds	6,047			6,047			—			—
	Trading securities	51,451			48,744			2,707			—
	Derivatives (1)	44,634			4,213			40,421			—
	Total assets at fair value	$	6,991,215		$	94,429		$	6,835,198		$	61,588
	Liabilities
	Derivatives	$	42,584		$	3,577		$	39,007		$	—
	Contingent consideration liability	49,350			—			—			49,350
	FDIC clawback liability	11,279			—			—			11,279
	Other liabilities	919			—			919			—
	Total liabilities at fair value (2)	$	104,132		$	3,577		$	39,926		$	60,629
	Redeemable noncontrolling interest	$	39,840		$	—		$	—		$	39,840
	Measured on a Nonrecurring Basis
	Assets
	Collateral dependent impaired loans (3):
	Commercial (4)	$	15		$	—		$	—		$	15
	Commercial real estate mortgages	1,214			—			—			1,214
	Residential mortgages	1,442			—			—			1,442
	Other real estate owned (5)	16,383			—			—			16,383
	Private equity and alternative investments	919			—			—			919
	Total assets at fair value	$	19,973		$	—		$	—		$	19,973
	(1) Reported in Other assets in the consolidated balance sheets.
	(2) Reported in Other liabilities in the consolidated balance sheets.
	(3) Impaired loans for which fair value was calculated using the collateral valuation method.
	(4) Includes lease financing.
	(5) Includes covered OREO.
					Fair Value Measurements at Reporting Date Using
	(in thousands)	Balance as of			Quoted Prices in			Significant Other			Significant
		December 31,			Active Markets			Observable			Unobservable
		2012			Level 1			Inputs			Inputs
								Level 2			Level 3
	Measured on a Recurring Basis
	Assets
	Securities available-for-sale:
	U.S. Treasury	$	20,397		$	20,397		$	—		$	—
	Federal agency - Debt	2,349,202			—			2,349,202			—
	Federal agency - MBS	693,032			—			693,032			—
	CMOs - Federal agency	5,318,253			—			5,318,253			—
	CMOs - Non-agency	61,513			—			61,513			—
	State and municipal	454,474			—			407,429			47,045
	Other debt securities	307,417			—			289,275			18,142
	Equity securities and mutual funds	1,701			1,701			—			—
	Trading securities	115,059			113,010			2,049			—
	Derivatives (1)	67,496			218			67,278			—
	Total assets at fair value	$	9,388,544		$	135,326		$	9,188,031		$	65,187
	Liabilities
	Derivatives	$	64,432		$	—		$	64,432		$	—
Contingent consideration liability	47,724			—			—			47,724
FDIC clawback liability	9,970			—			—			9,970
Other liabilities	368			—			368			—
Total liabilities at fair value (2)	$	122,494		$	—		$	64,800		$	57,694
Redeemable noncontrolling interest	$	41,112		$	—		$	—		$	41,112
Measured on a Nonrecurring Basis
Assets
Collateral dependent impaired loans (3):
Commercial (4)	$	2,655		$	—		$	—		$	2,655
Commercial real estate mortgages	10,963			—			—			10,963
Residential mortgages	1,811			—			—			1,811
Real estate construction	7,918			—			—			7,918
Home equity loans and lines of credit	780			—			—			780
Installment	550			—			—			550
Other real estate owned (5)	44,396			—			—			44,396
Private equity and alternative investments	6,178			—			—			6,178
Total assets at fair value	$	75,251		$	—		$	—		$	75,251
(1) Reported in Other assets in the consolidated balance sheets.
(2) Reported in Other liabilities in the consolidated balance sheets.
(3) Impaired loans for which fair value was calculated using the collateral valuation method.
(4) Includes lease financing.
(5) Includes covered OREO.
At September 30, 2013, $6.99 billion, or approximately 24 percent, of the Company’s total assets were recorded at fair value on a recurring basis, compared with $9.39 billion, or 33 percent, at December 31, 2012. The majority of these financial assets were valued using Level 1 or Level 2 inputs. Less than one percent of total assets were measured using Level 3 inputs. At September 30, 2013, $104.1 million of the Company’s total liabilities were recorded at fair value using mostly Level 2 or Level 3 inputs, compared with $122.5 million at December 31, 2012. There were no transfers between Level 1 and Level 2 of the fair value hierarchy for assets or liabilities measured on a recurring basis during the nine months ended September 30, 2013. At September 30, 2013, $20.0 million of the Company’s total assets were recorded at fair value on a nonrecurring basis, compared with $75.3 million at December 31, 2012. These assets represent less than one percent of total assets and were measured using Level 3 inputs.
Recurring Fair Value Measurements
Assets and liabilities for which fair value measurement is based on significant unobservable inputs are classified as Level 3 in the fair value hierarchy. The following table provides a reconciliation of the beginning and ending balances for Level 3 assets and liabilities measured at fair value on a recurring basis for the nine months ended September 30, 2013 and 2012.
Level 3 Assets and Liabilities Measured on a Recurring Basis
	For the nine months ended									For the nine months ended
	September 30, 2013									September 30, 2012
(in thousands)	Securities			Contingent			FDIC			Securities			Contingent			FDIC
	Available-for-			Consideration			Clawback			Available-for-			Consideration			Clawback
	Sale			Liability			Liability			Sale			Liability			Liability
Balance, beginning of period	$	65,187		$	(47,724	)	$	(9,970	)	$	19,583		$	—		$	(8,103	)
Total realized/unrealized gains (losses):
Included in earnings	—			—			(1,309		)	—			—			(1,811		)
Included in other comprehensive income	(35		)	—			—			1,770			—			—
Additions	—			—			—			—			(45,768		)	—
Settlements	(3,655		)	—			—			(3,152		)	—			—
Transfers into Level 3	—			—			—			47,165			—			—
Other (1)	91			(1,626		)	—			73			(515		)	—
Balance, end of period	$	61,588		$	(49,350	)	$	(11,279	)	$	65,439		$	(46,283	)	$	(9,914	)
(1)    Other rollforward activity consists of amortization of premiums and accretion of discounts recognized on the initial purchase of securities available-for-sale and accretion of discount related to the contingent consideration liability.
Redeemable noncontrolling interest is classified as Level 3 in the fair value hierarchy and measured on a recurring basis. Refer to Note 18, Noncontrolling Interest, for a rollforward of activity for the nine months ended September 30, 2013 and 2012.
Level 3 assets measured at fair value on a recurring basis consist of municipal auction rate securities and collateralized debt obligation senior notes that are included in securities available-for-sale. At September 30, 2013, municipal auction rate securities were valued using an average yield on California variable rate notes that were comparable in credit rating and maturity to the securities held, plus a liquidity premium. At September 30, 2013, the collateralized debt obligation senior note was valued using the discounted cash flow method with the following unobservable inputs: (1) risk-adjusted discount rate consistent with similarly-rated securities, (2) prepayment rate of 2 percent, (3) default rate of 0.75 percent of performing collateral, and (4) 15 percent recovery rate with a 2-year lag.
Level 3 liabilities measured at fair value on a recurring basis consist of contingent consideration and an FDIC clawback liability that are included in other liabilities. Refer to Note 2, Business Combinations, for further discussion of the methodology used to value the contingent consideration liability. The FDIC clawback liability was valued using the discounted cash flow method based on the terms specified in loss-sharing agreements with the FDIC, the actual FDIC payments collected, and the following unobservable inputs: (1) risk-adjusted discount rate reflecting the Bank’s credit risk, plus a liquidity premium, (2) prepayment assumptions, and (3) credit assumptions.
There were no purchases, sales, or transfers out of Level 3 assets measured on a recurring basis during the nine months ended September 30, 2013 and 2012. Paydowns of $3.7 million and $3.2 million were received on Level 3 assets measured on a recurring basis for the nine months ended September 30, 2013 and 2012, respectively.
Nonrecurring Fair Value Measurements
Assets measured at fair value on a nonrecurring basis using significant unobservable inputs include certain collateral dependent impaired loans, OREO for which fair value is not solely based on market observable inputs, and certain private equity and alternative investments. Private equity and alternative investments do not have readily determinable fair values. These investments are carried at cost and evaluated for impairment on a quarterly basis. Due to the lack of readily determinable fair values for these investments, the impairment assessment is based primarily on a review of investment performance and the likelihood that the capital invested would be recovered.
The table below provides information about valuation method, inputs and assumptions for nonrecurring Level 3 fair value measurements. The weight assigned to each input is based on the facts and circumstances that exist at the date of measurement.
Information About Nonrecurring Level 3 Fair Value Measurements
(in thousands)	Fair Value at			Valuation		Unobservable Inputs
	September 30,			Method
	2013
Collateral dependent impaired loans	$	2,671		Market		-	Assumptions made in the appraisal process
						-	Adjustments to external or internal appraised values (1)
						-	Probability weighting of broker price opinions
						-	Management assumptions regarding market trends or
							other relevant factors
Other real estate owned	$	16,383		Market		-	Assumptions made in the appraisal process
						-	Adjustments to external or internal appraised values (1)
						-	Probability weighting of broker price opinions
						-	Management assumptions regarding market trends or
							other relevant factors
Private equity and alternative investments	$	919		Cost Recovery		-	Management’s assumptions regarding recoverability of
							investment based on fund financial performance, market
							conditions and other relevant factors
(1)       Appraised values may be adjusted to reflect changes in market conditions that have occurred subsequent to the appraisal date, or for revised estimates regarding the timing or cost of the property sale. These adjustments are based on qualitative judgments made by management on a case-by-case basis.
Market-based valuation methods use prices and other relevant information generated by market transactions involving identical or comparable assets. Under the cost recovery approach, fair value represents an estimate of the amount of an asset expected to be recovered. The Company only employs the cost recovery approach for assets that are not readily marketable and for which minimal market-based information exists.
For assets measured at fair value on a nonrecurring basis, the following table presents the total net (losses) gains, which include charge-offs, recoveries, specific reserves, OREO valuation write-downs and write-ups, gains and losses on sales of OREO, and impairment write-downs on private equity investments, recognized in the three and nine months ended September 30, 2013 and 2012:
	For the three months ended						For the nine months ended
	September 30,						September 30,
(in thousands)	2013			2012			2013			2012
Collateral dependent impaired loans:
Commercial	$	—		$	—		$	—		$	(368	)
Commercial real estate mortgages	(934		)	306			(641		)	(1,630		)
Residential mortgages	(2		)	(31		)	(224		)	(1,152		)
Real estate construction	—			130			—			(6,623		)
Home equity loans and lines of credit	—			16			116			(47		)
Installment	—			(101		)	(138		)	(208		)
Other real estate owned (1)	(364		)	(4,147		)	(5,075		)	(16,312		)
Private equity and alternative investments	(109		)	(2,477		)	(508		)	(2,938		)
Total net losses recognized	$	(1,409	)	$	(6,304	)	$	(6,470	)	$	(29,278	)
(1)         Net losses on OREO includes $0.4 million and $5.0 million of net losses related to covered OREO for the three and nine months ended September 30, 2013, respectively, and $3.6 million and $14.7 million of net losses related to covered OREO for the three and nine months ended September 30, 2012. A significant portion of net losses on covered OREO is reimbursable by the FDIC.
Fair Value of Financial Instruments
A financial instrument is broadly defined as cash, evidence of an ownership interest in another entity, or a contract that imposes a contractual obligation on one entity and conveys a corresponding right to a second entity to require delivery or exchange of a financial instrument. Refer to Note 1, Summary of Significant Accounting Policies, in the Company’s 2012 Form 10-K for additional information on fair value measurements.
The disclosure does not include estimated fair value amounts for assets and liabilities which are not defined as financial instruments but which have significant value. These assets and liabilities include the value of customer-relationship intangibles, goodwill, affordable housing investments carried at cost, other assets, deferred taxes and other liabilities. Accordingly, the total of the fair values presented does not represent the underlying value of the Company.
The following tables summarize the carrying amounts and estimated fair values of those financial instruments that are reported at amortized cost in the Company’s consolidated balance sheets. The tables also provide information on the level in the fair value hierarchy for inputs used in determining the fair value of those financial instruments. Most financial assets and financial liabilities for which carrying amount equals fair value are considered by the Company to be Level 1 measurements in the fair value hierarchy.
	September 30, 2013
	Carrying			Total			Fair Value Measurements Using
(in millions)	Amount			Fair Value			Level 1			Level 2			Level 3
Financial Assets:
Cash and due from banks	$	301.1		$	301.1		$	301.1		$	—		$	—
Due from banks - interest bearing	1,045.60			1,045.60			1,045.60			—			—
Securities purchased under resale agreements	200			197			—			197			—
Securities held-to-maturity	1,649.50			1,608.10			—			1,608.10			—
Loans and leases, net of allowance	16,270.20			16,719.80			—			—			16,719.80
Covered loans, net of allowance	754.2			802.5			—			—			802.5
FDIC indemnification asset	101.1			84.3			—			—			84.3
Investment in FHLB and FRB stock	71.8			71.8			—			71.8			—
Financial Liabilities:
Deposits	$	25,236.90		$	25,240.00		$	—		$	24,503.00		$	737
Other short-term borrowings	2.6			2.6			—			—			2.6
Long-term debt	719.3			778.2			—			693.6			84.6
	December 31, 2012
	Carrying			Total			Fair Value Measurements Using
(in millions)	Amount			Fair Value			Level 1			Level 2			Level 3
Financial Assets:
Cash and due from banks	$	152		$	152		$	152		$	—		$	—
Due from banks - interest bearing	246.3			246.3			246.3			—			—
Federal funds sold	17.1			17.1			17.1			—			—
Securities held-to-maturity	1,398.40			1,446.60			—			1,446.60			—
Loans and leases, net of allowance	14,540.40			14,988.60			—			—			14,988.60
Covered loans, net of allowance	986.2			1,055.00			—			—			1,055.00
FDIC indemnification asset	150			123.9			—			—			123.9
Investment in FHLB and FRB stock	90			90			—			90			—
Financial Liabilities:
Deposits	$	23,502.40		$	23,506.90		$	—		$	22,734.50		$	772.4
Federal funds purchased and securities sold under repurchase agreements	1,214.20			1,214.20			1,214.20			—			—
Other short-term borrowings	209.6			210.7						207.6			3.1
Long-term debt	706.1			774.8			—			698.9			75.9
Following is a description of the methods and assumptions used in estimating the fair values of these financial instruments:
Cash and due from banks, Due from banks—interest bearing and Federal funds sold — For these short-term instruments, the carrying amount is a reasonable estimate of fair value.
Securities purchased under resale agreements— The fair value of securities purchased under term resale agreements is determined using a combination of quoted market prices and observable market inputs such as interest rates and credit spreads.
Securities held-to-maturity — For securities held-to-maturity, the fair value is generally determined by quoted market prices, where available, or on observable market inputs appropriate for the type of security.
Loans and leases — Loans and leases, excluding covered loans, are not recorded at fair value on a recurring basis. Nonrecurring fair value adjustments are periodically recorded on impaired loans that are measured for impairment based on the fair value of collateral. Due to the lack of activity in the secondary market for the types of loans in the Company’s portfolio, a model-based approach is used for determining the fair value of loans for purposes of the disclosures in the previous table. The fair value of loans is estimated by discounting future cash flows using discount rates that incorporate the Company’s assumptions for current market yields, credit risk and liquidity premiums. Loan cash flow projections are based on contractual loan terms adjusted for the impact of current interest rate levels on borrower behavior, including prepayments. Loan prepayment assumptions are based on industry standards for the type of loans being valued. Projected cash flows are discounted using yield curves based on current market conditions. Yield curves are constructed by product type using the Bank’s loan pricing model for like-quality credits. The discount rates used in the Company’s model represent the rates the Bank would offer to current borrowers for like-quality credits. These rates could be different from what other financial institutions could offer for these loans.
Covered loans — The fair value of covered loans is based on estimates of future loan cash flows and appropriate discount rates, which incorporate the Company’s assumptions about market funding cost and liquidity premium. The estimates of future loan cash flows are determined using the Company’s assumptions concerning the amount and timing of principal and interest payments, prepayments and credit losses.
FDIC indemnification asset — The fair value of the FDIC indemnification asset is estimated by discounting estimated future cash flows based on estimated current market rates.
Investment in FHLB and FRB stock — Investments in Federal Home Loan Bank of San Francisco (“FHLB”) and Federal Reserve Bank (“FRB”) stock are recorded at cost. Ownership of these securities is restricted to member banks and the securities do not have a readily determinable market value. Purchases and sales of these securities are at par value with the issuer. The fair value of investments in FRB and FHLB stock is equal to the carrying amount.
Deposits — The fair value of demand and interest checking deposits, savings deposits, and certain money market accounts is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit (“CD”) is determined by discounting expected future cash flows using the rates offered by the Bank for deposits of similar type and remaining maturity at the measurement date. This value is compared to the termination value of each CD given the Bank’s standard early withdrawal penalties. The fair value reported is the higher of the discounted present value of each CD and the termination value after the recovery of prepayment penalties. The Bank reviews pricing for its CD products weekly. This review gives consideration to market pricing for products of similar type and maturity offered by other financial institutions.
Other short-term borrowings — The fair value of the current portion of long-term debt classified in short-term borrowings is obtained through third-party pricing sources. The fair value of nonrecourse debt is determined by discounting estimated future cash flows based on estimated current market rates. The carrying amount of the remaining other short-term borrowings is a reasonable estimate of fair value.
Long-term debt — The fair value of long-term debt, excluding nonrecourse debt, is obtained through third-party pricing sources. The fair value of nonrecourse debt is determined by discounting estimated future cash flows based on estimated current market rates.
Off-balance sheet commitments, which include commitments to extend credit, are excluded from the table. A reasonable estimate of fair value for these instruments is the carrying amount of deferred fees and the reserve for any credit losses related to these off-balance sheet instruments. This estimate is not material to the Company’s financial position.

Securities

Securities	9 Months Ended
	Sep. 30, 2013
Securities	'
Securities	'
	Note 4. Securities
	At September 30, 2013, the Company had total securities of $8.60 billion, comprised of securities available-for-sale at fair value of $6.90 billion, securities held-to-maturity at amortized cost of $1.65 billion and trading securities at fair value of $51.5 million. At December 31, 2012, the Company had total securities of $10.72 billion, comprised of securities available-for-sale at fair value of $9.21 billion, securities held-to-maturity at amortized cost of $1.40 billion and trading securities at fair value of $115.1 million.
	The following is a summary of amortized cost and estimated fair value for the major categories of securities available-for-sale and securities held-to-maturity at September 30, 2013 and December 31, 2012:
					Gross			Gross
		Amortized			Unrealized			Unrealized
	(in thousands)	Cost			Gains			Losses			Fair Value
	September 30, 2013
	Securities available-for-sale:
	U.S. Treasury	$	35,400		$	25		$	—		$	35,425
	Federal agency - Debt	1,007,019			1,078			(5,650		)	1,002,447
	Federal agency - MBS	192,345			7,054			(2,226		)	197,173
	CMOs - Federal agency	4,773,336			40,818			(71,570		)	4,742,584
	CMOs - Non-agency	44,484			213			(1,385		)	43,312
	State and municipal	466,633			10,490			(1,337		)	475,786
	Other debt securities	393,377			5,220			(6,241		)	392,356
	Total debt securities	6,912,594			64,898			(88,409		)	6,889,083
	Equity securities and mutual funds	337			5,710			—			6,047
	Total securities available-for-sale	$	6,912,931		$	70,608		$	(88,409	)	$	6,895,130
	Securities held-to-maturity (1):
	Federal agency - Debt	$	140,020		$	182		$	(4,305	)	$	135,897
	Federal agency - MBS	359,952			1,187			(9,753		)	351,386
	CMOs - Federal agency	849,600			3,567			(18,158		)	835,009
	State and municipal	299,948			660			(14,826		)	285,782
	Total securities held-to-maturity	$	1,649,520		$	5,596		$	(47,042	)	$	1,608,074
	December 31, 2012
	Securities available-for-sale:
	U.S. Treasury	$	20,393		$	7		$	(3	)	$	20,397
	Federal agency - Debt	2,344,374			5,031			(203		)	2,349,202
	Federal agency - MBS	653,428			39,673			(69		)	693,032
	CMOs - Federal agency	5,233,126			91,165			(6,038		)	5,318,253
	CMOs - Non-agency	62,975			662			(2,124		)	61,513
	State and municipal	437,266			17,447			(239		)	454,474
	Other debt securities	305,340			7,945			(5,868		)	307,417
	Total debt securities	9,056,902			161,930			(14,544		)	9,204,288
	Equity securities and mutual funds	336			1,365			—			1,701
	Total securities available-for-sale	$	9,057,238		$	163,295		$	(14,544	)	$	9,205,989
	Securities held-to-maturity (1):
	Federal agency - Debt	$	97,183		$	4,032		$	—		$	101,215
	Federal agency - MBS	303,642			11,490			(182		)	314,950
	CMOs - Federal agency	745,980			28,973			(382		)	774,571
	State and municipal	251,598			5,122			(857		)	255,863
	Total securities held-to-maturity	$	1,398,403		$	49,617		$	(1,421	)	$	1,446,599
	(1) Securities held-to-maturity are presented in the consolidated balance sheets at amortized cost.
	Proceeds from sales of securities available-for-sale were $584.7 million and $1.84 billion for the three and nine months ended September 30, 2013, respectively, compared with $1.0 million and $6.2 million for the three and nine months ended September 30, 2012, respectively. There were no sales of securities held-to-maturity during the three and nine months ended September 30, 2013 and September 30, 2012. The following table provides the gross realized gains and losses on the sales and calls of securities (including trading securities):
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Gross realized gains	$	17,533		$	1,315		$	24,369		$	1,851
	Gross realized losses	(11,745		)	(459		)	(11,745		)	(825		)
	Net realized gains	$	5,788		$	856		$	12,624		$	1,026
	Interest income on securities for the three months ended September 30, 2013 and 2012 is comprised of: (i) taxable interest income of $35.5 million and $40.0 million, respectively (ii) nontaxable interest income of $4.5 million and $4.1 million, respectively, and (iii) dividend income of $19 thousand and $0.1 million, respectively. Interest income on securities for the nine months ended September 30, 2013 and 2012 is comprised of: (i) taxable interest income of $112.1 million and $120.8 million, respectively (ii) nontaxable interest income of $13.3 million and $12.0 million, respectively, and (iii) dividend income of $0.1 million and $0.3 million, respectively.
	The following table provides the expected remaining maturities of debt securities included in the securities portfolio at September 30, 2013, except for maturities of mortgage-backed securities which are allocated according to the average life of expected cash flows. Average expected maturities will differ from contractual maturities because of the amortizing nature of the loan collateral and prepayment behavior of borrowers.
	(in thousands)	One year or			Over 1 year			Over 5 years			Over 10			Total
		less			through			through			years
					5 years			10 years
	Securities available-for-sale:
	U.S. Treasury	$	12,078		$	23,347		$	—		$	—		$	35,425
	Federal agency - Debt	317,377			625,652			59,418			—			1,002,447
	Federal agency - MBS	—			68,967			128,206			—			197,173
	CMOs - Federal agency	128,236			3,706,036			908,312			—			4,742,584
	CMOs - Non-agency	111			9,218			33,983			—			43,312
	State and municipal	39,865			355,575			72,650			7,696			475,786
	Other	12,726			292,812			86,818			—			392,356
Total debt securities available-for-sale	$	510,393		$	5,081,607		$	1,289,387		$	7,696		$	6,889,083
Amortized cost	$	507,840		$	5,082,693		$	1,314,292		$	7,769		$	6,912,594
Securities held-to-maturity:
Federal agency - Debt	$	—		$	7,000		$	60,022		$	72,998		$	140,020
Federal agency - MBS	—			14,646			340,827			4,479			359,952
CMOs - Federal agency	—			181,723			667,877			—			849,600
State and municipal	659			8,749			142,020			148,520			299,948
Total debt securities held-to-maturity at amortized cost	$	659		$	212,118		$	1,210,746		$	225,997		$	1,649,520
Impairment Assessment
The Company performs a quarterly assessment of the debt and equity securities in its investment portfolio that have an unrealized loss to determine whether the decline in the fair value of these securities below their cost is other-than-temporary. Impairment of debt securities is considered other-than-temporary when it becomes probable that an investor will be unable to collect all amounts due according to the contractual terms of the security.  Impairment of equity securities is considered other-than-temporary when uncertainty exists as to whether an investor will be able to recover the cost of an investment.  The Company’s impairment assessment takes into consideration the following factors as applicable to the security being analyzed: the length of time and the extent to which the market value has been less than cost; the financial condition and near-term prospects of the issuer, including events specific to the issuer or industry; defaults or deferrals of scheduled interest, principal or dividend payments; external credit ratings and recent downgrades; and whether the Company intends to sell the security and whether it is more likely than not it will be required to sell the security prior to recovery of its amortized cost basis. If a decline in fair value is judged to be other than temporary, the cost basis of the individual security is written down to fair value which then becomes the new cost basis. The new cost basis is not adjusted for subsequent recoveries in fair value.
When there are credit losses associated with an impaired debt security and the Company does not have the intent to sell the security and it is more likely than not that it will not have to sell the security before recovery of its cost basis, the Company will separate the amount of the impairment into the amount that is credit-related and the amount related to non-credit factors. The credit-related impairment is recognized in Net impairment loss recognized in earnings in the consolidated statements of income. The non-credit-related impairment is recognized in AOCI.
Securities Deemed to be Other-Than-Temporarily Impaired
The Company recorded impairment losses in earnings on securities available-for-sale of $0.1 million and $0.3 million for the three and nine months ended September 30, 2013, respectively. Impairment losses of $39 thousand and $0.2 million were recognized in earnings for the three and nine months ended September 30, 2012. There was no non-credit related other-than-temporary impairment recognized in AOCI on securities available-for-sale at September 30, 2013. The Company recognized $1.5 million of non-credit-related other-than-temporary impairment in AOCI on securities available-for-sale at September 30, 2012. No impairment losses were recognized in earnings or AOCI for securities held-to-maturity during the three and nine months ended September 30, 2013 and 2012.
The following table summarizes the changes in cumulative credit-related other-than-temporary impairment recognized in earnings for debt securities for the three and nine months ended September 30, 2013 and 2012. Credit-related other-than-temporary impairment that was recognized in earnings is reflected as an “Initial credit-related impairment” if the period reported is the first time the security had a credit impairment. A credit-related other-than-temporary impairment is reflected as a “Subsequent credit-related impairment” if the period reported is not the first time the security had a credit impairment. Cumulative impairment is reduced for securities with previously recognized credit-related impairment that were sold or redeemed during the period. Cumulative impairment is further adjusted for other changes in expected cash flows.
	For the three months ended						For the nine months ended
	September 30,						September 30,
(in thousands)	2013			2012			2013			2012
Balance, beginning of period	$	3,654		$	17,366		$	16,486		$	17,531
Subsequent credit-related impairment	144			39			326			217
Reduction for securities sold or redeemed	—			(537		)	(12,761		)	(537		)
Reduction for increase in expected cash flows on securities for which OTTI was previously recognized	(421		)	(267		)	(674		)	(610		)
Balance, end of period	$	3,377		$	16,601		$	3,377		$	16,601
Non-Agency CMOs
The Company held $33.8 million of variable rate non-agency CMOs at September 30, 2013. The Company determined that one non-agency CMO with a fair value of $6.0 million was other-than-temporarily impaired at September 30, 2013. These CMOs have a fixed interest rate for an initial period after which they become variable-rate instruments with annual rate resets. For purposes of projecting future cash flows, the current fixed coupon was used through the reset date for each security. The prevailing LIBOR/Treasury forward curve as of the measurement date was used to project all future floating-rate cash flows based on the characteristics of each security. Other factors considered in the projection of future cash flows include the current level of subordination from other CMO classes, anticipated prepayment rates, cumulative defaults and loss given default. The Company recognized $0.1 million and $0.3 million of credit-related impairment losses in earnings on its investment in one variable rate non-agency CMO for the three and nine months ended September 30, 2013, respectively. Impairment losses of $39 thousand and $0.2 million were recognized in earnings on variable rate non-agency CMOs for the three and nine months ended September 30, 2012. No other-than-temporary impairment was recognized in AOCI on the impaired CMO security at September 30, 2013. The non-credit portion of other-than-temporarily impairment recognized at September 30, 2012 was attributed to external market conditions, primarily the lack of liquidity in these securities, resulting in an increase in interest rate spreads for these securities. The Company also holds $9.5 million in fixed rate non-agency CMOs at September 30, 2013, none of which have experienced any other-than-temporary impairment.
The following table provides a summary of the gross unrealized losses and fair value of investment securities that are not deemed to be other-than-temporarily impaired aggregated by investment category and length of time that the securities have been in a continuous unrealized loss position as of September 30, 2013 and December 31, 2012. The table also includes investment securities that had both a credit-related impairment recognized in earnings and a non-credit-related impairment recognized in AOCI.
	Less than 12 months						12 months or greater						Total
(in thousands)	Fair Value			Estimated			Fair Value			Estimated			Fair Value		Estimated
				Unrealized						Unrealized					Unrealized
				Loss						Loss					Loss
September 30, 2013
Securities available-for-sale:
Federal agency - Debt	$	611,954		$	5,650		$	—		$	—		$	611,954	$	5,650
Federal agency - MBS (1)	45,176			2,226			45			—			45,221		2,226
CMOs - Federal agency	2,774,796			69,757			96,544			1,813			2,871,340		71,570
CMOs - Non-agency	14,620			517			8,432			868			23,052		1,385
State and municipal	90,545			328			46,216			1,009			136,761		1,337
Other debt securities	118,698			1,231			15,372			5,010			134,070		6,241
Total securities available-for-sale	$	3,655,789		$	79,709		$	166,609		$	8,700		$	3,822,398	$	88,409
Securities held-to-maturity:
Federal agency - Debt	$	128,715		$	4,305		$	—		$	—		$	128,715	$	4,305
Federal agency - MBS	231,160			9,753			—			—			231,160		9,753
CMOs - Federal agency	583,595			18,158			—			—			583,595		18,158
State and municipal	229,562			14,826			—			—			229,562		14,826
Total securities held-to-maturity	$	1,173,032		$	47,042		$	—		$	—		$	1,173,032	$	47,042
(1)    The estimated gross unrealized loss for federal agency MBS securities in a continuous unrealized loss position of 12 months or greater was an insignificant amount as of September 30, 2013.
	Less than 12 months						12 months or greater						Total
(in thousands)	Fair Value			Estimated			Fair Value			Estimated			Fair Value		Estimated
				Unrealized						Unrealized					Unrealized
				Loss						Loss					Loss
December 31, 2012
Securities available-for-sale:
U.S. Treasury	$	5,096		$	3		$	—		$	—		$	5,096	$	3
Federal agency - Debt	346,136			203			—			—			346,136		203
Federal agency - MBS (1)	50,932			69			46			—			50,978		69
CMOs - Federal agency	1,413,367			5,994			13,565			44			1,426,932		6,038
CMOs - Non-agency	—			—			25,484			2,124			25,484		2,124
State and municipal	85,550			225			810			14			86,360		239
Other debt securities	39,877			49			16,038			5,819			55,915		5,868
Total securities available-for-sale	$	1,940,958		$	6,543		$	55,943		$	8,001		$	1,996,901	$	14,544
Securities held-to-maturity:
Federal agency - MBS	$	31,514		$	182		$	—		$	—		$	31,514	$	182
CMOs - Federal agency	60,998			382			—			—			60,998		382
State and municipal	64,344			857			—			—			64,344		857
Total securities held-to-maturity	$	156,856		$	1,421		$	—		$	—		$	156,856	$	1,421
(1)    The estimated gross unrealized loss for federal agency MBS securities in a continuous unrealized loss position of 12 months or greater was an insignificant amount as of December 31, 2012.
At September 30, 2013, the Company had $3.82 billion of securities available-for-sale and $1.17 billion of securities held-to-maturity in an unrealized loss position. The debt securities in an unrealized loss position totaled 688 and included 32 federal agency debt securities, 26 federal agency MBS securities, 161 federal agency CMOs, 6 non-agency CMOs, 454 state and municipal securities and 9 other debt securities. The increase in unrealized losses on debt securities from year-end 2012 is attributed to higher market interest rates in the current period.
Other debt securities include the Company’s investment in one highly-rated corporate debt and collateralized bond obligation backed by trust preferred securities (“CDOs”) issued by a geographically diverse pool of small- and medium-sized financial institutions. The CDO held in securities available-for-sale at September 30, 2013 is the most senior tranche of the issue. Trading activity for the type of CDO held by the Company has been limited since 2008. Accordingly, the fair value of this security was determined using an internal pricing model that incorporates assumptions about discount rates in an illiquid market, projected cash flows and collateral performance. The CDO had a $5.0 million net unrealized loss at September 30, 2013, which the Company attributes to the illiquid credit markets. The CDO has collateral that well exceeds the outstanding debt. The security valuation reflects the current and prospective performance of the issuers whose debt is contained in the asset pools. The Company expects to receive all remaining contractual principal and interest payments due on its CDO. Additionally, the Company does not intend to sell this security, and it is not more likely than not that it will be required to sell the security before it recovers the cost basis of its investment.
At December 31, 2012, the Company had $2.00 billion of securities available-for-sale in an unrealized loss position, consisting of $1.98 billion of temporarily impaired securities and $16.2 million of securities that had non-credit related impairment recognized in AOCI. At December 31, 2012, the Company had $156.9 million of securities held-to-maturity in an unrealized loss position. At December 31, 2012, the Company had 231 debt securities available-for-sale and held-to-maturity in an unrealized loss position. The debt securities in an unrealized loss position include 2 U.S. Treasury note, 8 federal agency debt securities, 7 federal agency MBS, 53 federal agency CMOs, 4 non-agency CMOs, 152 state and municipal securities and 5 other debt securities.

Other_Investments

Other Investments	9 Months Ended
	Sep. 30, 2013
Other Investments	'
Other Investments	'
	Note 5. Other Investments
	FHLB and FRB Stock
	The Company’s investment in stock issued by the FHLB and FRB totaled $71.8 million and $90.0 million at September 30, 2013 and December 31, 2012, respectively. Ownership of government agency securities is restricted to member banks, and the securities do not have readily determinable market values. The Company records investments in FHLB and FRB stock at cost in Other assets of the consolidated balance sheets and evaluates these investments for impairment. The Company expects to recover the full amount invested in FHLB and FRB stock.
	Private Equity and Alternative Investments
	The Company has ownership interests in a limited number of private equity, venture capital, real estate and hedge funds that are not publicly traded and do not have readily determinable fair values. These investments are carried at cost in the Other assets section of the consolidated balance sheets and are net of impairment write-downs, if applicable. The Company’s investments in these funds totaled $36.3 million at September 30, 2013 and $36.1 million at December 31, 2012. A summary of investments by fund type is provided below:
	(in thousands)	September 30,		December 31,
	Fund Type	2013		2012
	Private equity and venture capital	$	20,862	$	20,693
	Real estate	8,108		9,223
	Hedge	2,733		2,866
	Other	4,567		3,309
	Total	$	36,270	$	36,091
	Management reviews these investments quarterly for impairment. The impairment assessment includes a review of the most recent financial statements and investment reports for each fund and discussions with fund management. An impairment loss is recognized if it is deemed probable that the Company will not recover the cost of an investment. The impairment loss is recognized in Other noninterest income in the consolidated statements of income. The new cost basis of the investment is not adjusted for subsequent recoveries in value. The Company recognized impairment losses of $0.1 million and $0.5 million on other investments during the three and nine months ended September 30, 2013, respectively. The Company recognized impairment losses totaling $2.5 million and $2.9 million on its other investments during the three and nine months ended September 30, 2012, respectively.
	The table below provides information as of September 30, 2013 on private equity and alternative investments measured at fair value on a nonrecurring basis due to the recognition of impairment:
	(in thousands)	Fair		Unfunded		Redemption	Redemption
	Fund Type	Value		Commitments		Frequency	Notice Period
	Private equity and venture capital (1)	$	919	$	179	None (2)	N/A
	(1)    Funds invest in securities and other instruments of public and private companies, including corporations, partnerships, limited liability companies and joint ventures.
	(2)    Funds make periodic distributions of income but do not permit redemptions prior to the end of the investment term.

Loans_Allowance_for_Loan_and_L

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments	9 Months Ended
	Sep. 30, 2013
Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments	'
Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments	'
	Note 6. Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments
	The following is a summary of the major categories of loans:
	Loans and Leases
		September 30,			December 31,
	(in thousands)	2013			2012
	Commercial	$	7,126,158		$	6,211,353
	Commercial real estate mortgages	3,077,183			2,739,284
	Residential mortgages	4,418,231			3,962,205
	Real estate construction	380,489			313,190
	Home equity loans and lines of credit	681,879			711,750
	Installment	152,107			142,793
	Lease financing	730,086			737,720
	Loans and leases, excluding covered loans	16,566,133			14,818,295
	Less: Allowance for loan and lease losses	(295,947		)	(277,888		)
	Loans and leases, excluding covered loans, net	16,270,186			14,540,407
	Covered loans	780,072			1,031,004
	Less: Allowance for loan losses	(25,882		)	(44,781		)
	Covered loans, net	754,190			986,223
	Total loans and leases.	$	17,346,205		$	15,849,299
	Total loans and leases, net	$	17,024,376		$	15,526,630
	The loan amounts above include unamortized fees, net of deferred costs, of $2.4 million and $5.9 million as of September 30, 2013 and December 31, 2012, respectively.
	Concentrations of credit risk arise when a number of clients are engaged in similar business activities, or activities in the same geographic region, or have similar economic features that would cause their ability to meet contractual obligations to be similarly affected by changes in economic conditions. Although the Company’s lending activities are predominantly in California, and to a lesser extent, New York and Nevada, the Company has various specialty lending businesses that lend to businesses located throughout the United States of America. Excluding covered loans, at September 30, 2013, California represented 77 percent of total loans outstanding and New York and Nevada represented 8 percent and 2 percent, respectively. The remaining 13 percent of total loans outstanding represented other states. Although the Company has a diversified loan portfolio, a substantial portion of the loan portfolio and credit performance depends on the economic stability of Southern California.
	Within the Company’s covered loan portfolio at September 30, 2013, the five states with the largest concentration were California (36 percent), Texas (11 percent), Nevada (8 percent), Arizona (5 percent) and Ohio (5 percent). The remaining 35 percent of total covered loans outstanding represented other states.
	Covered Loans
	Covered loans represent loans acquired from the FDIC that are subject to loss-sharing agreements. Covered loans were $780.1 million as of September 30, 2013 and $1.03 billion as of December 31, 2012. Covered loans, net of allowance for loan losses, were $754.2 million at September 30, 2013 and $986.2 million at December 31, 2012.
	The following is a summary of the major categories of covered loans:
		September 30,			December 31,
	(in thousands)	2013			2012
	Commercial	$	10,015		$	10,561
	Commercial real estate mortgages	719,207			931,758
	Residential mortgages	5,030			5,652
	Real estate construction	41,625			78,554
	Home equity loans and lines of credit	3,672			3,790
	Installment	523			689
	Covered loans	780,072			1,031,004
	Less: Allowance for loan losses	(25,882		)	(44,781		)
	Covered loans, net	$	754,190		$	986,223
	The following table provides information on covered loans and loss-sharing terms by acquired entity:
	(in thousands)	Imperial			1st Pacific			Sun West			Nevada			Total
		Capital			Bank			Bank			Commerce
		Bank									Bank
	Carrying value of covered loans as of:
	September 30, 2013	$	680,427		$	45,123		$	25,948		$	28,574		$	780,072
	December 31, 2012	$	893,031		$	70,240		$	34,803		$	32,930		$	1,031,004
	Expiration date of FDIC loss sharing:
	Commercial (1)	12/31/16			6/30/15			6/30/15			6/30/16
	Residential	12/31/19			5/30/20			5/30/20			4/30/21
	Termination date of FDIC loss-sharing agreements:
	Commercial (1)	12/19/17			5/8/18			5/29/18			6/30/19
	Residential	12/31/19			5/30/20			5/30/20			4/30/21
	(1)    The Company is subject to sharing 80% of its recoveries with the FDIC up to the termination dates of the commercial loss-sharing agreements.
	The Company evaluated the acquired loans from its FDIC-assisted acquisitions and concluded that all loans, with the exception of a small population of acquired loans, would be accounted for under ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality (“ASC 310-30”). Loans are accounted for under ASC 310-30 when there is evidence of credit deterioration since origination and for which it is probable, at acquisition, that the Company would be unable to collect all contractually required payments. Interest income is recognized on all acquired impaired loans through accretion of the difference between the carrying amount of the loans and their expected cash flows.
	The excess of cash flows expected to be collected over the carrying value of the underlying acquired impaired loans is referred to as the accretable yield. This amount is not reported in the consolidated balance sheets, but is accreted into interest income over the remaining estimated lives of the underlying pools of loans. Changes in the accretable yield for acquired impaired loans were as follows for the nine months ended September 30, 2013 and 2012:
		For the nine months ended
		September 30,
	(in thousands)	2013			2012
	Balance, beginning of period	$	295,813		$	436,374
	Accretion	(48,424		)	(62,189		)
	Reclassifications from (to) nonaccretable yield	26,990			(4,042		)
	Disposals and other	(41,930		)	(51,854		)
	Balance, end of period	$	232,449		$	318,289
	The factors that most significantly affect estimates of cash flows expected to be collected, and accordingly the accretable yield balance, include: (i) changes in credit assumptions, including both credit loss amounts and timing; (ii) changes in prepayment assumptions; and (iii) changes in interest rates for variable-rate loans. Reclassifications between accretable yield and nonaccretable yield may vary from period to period as the Company periodically updates its cash flow projections. The reclassification of nonaccretable yield to accretable yield during 2013 was principally driven by positive changes in cash flows, resulting mainly from changes in credit assumptions.
	The Company recorded an indemnification asset related to its FDIC-assisted acquisitions, which represents the present value of the expected reimbursement from the FDIC for expected losses on acquired loans, OREO and unfunded commitments. The FDIC indemnification asset from all FDIC-assisted acquisitions was $101.1 million at September 30, 2013 and $150.0 million at December 31, 2012.
Credit Quality on Loans and Leases, Excluding Covered Loans
Allowance for Loan and Lease Losses and Reserve for Off-Balance Sheet Credit Commitments
The Company accounts for the credit risk associated with lending activities through its allowance for loan and lease losses, reserve for off-balance sheet credit commitments and provision for credit losses. The provision is the expense recognized in the consolidated statements of income to adjust the allowance and reserve to the levels deemed appropriate by management, as determined through application of the Company’s allowance methodology procedures. The provision for credit losses reflects management’s judgment of the adequacy of the allowance for loan and lease losses and the reserve for off-balance sheet credit commitments. It is determined through quarterly analytical reviews of the loan and commitment portfolios and consideration of such other factors as the Company’s loan and lease loss experience, trends in problem loans, concentrations of credit risk, underlying collateral values, and current economic conditions, as well as the results of the Company’s ongoing credit review process. As conditions change, the Company’s level of provisioning and the allowance for loan and lease losses and reserve for off-balance sheet credit commitments may change.
The relative significance of risk considerations used in measuring the allowance for loan and lease losses will vary by portfolio segment. For commercial loans, the primary risk consideration is a borrower’s ability to generate sufficient cash flows to repay their loan. Secondary considerations include the creditworthiness of guarantors and the valuation of collateral. In addition to the creditworthiness of a borrower, the type and location of real estate collateral is an important risk factor for commercial real estate and real estate construction loans. The primary risk considerations for consumer loans are a borrower’s personal cash flow and liquidity, as well as collateral value.
For commercial, non-homogenous loans that are not impaired, the Bank derives loss factors for each risk grade and loan type via a process that begins with estimates of probable losses inherent in the portfolio based upon various statistical analyses. The factors considered in the analysis include loan type, migration analysis, in which historical delinquency and credit loss experience is applied to the portfolio, as well as analyses that reflect current trends and conditions. Each portfolio of smaller balance homogeneous loans, including residential first mortgages, installment, revolving credit and most other consumer loans, is collectively evaluated for loss potential. The quantitative portion of the allowance for loan and lease losses is adjusted for qualitative factors to account for model imprecision and to incorporate the range of probable outcomes inherent in the estimates used for the allowance. The qualitative portion of the allowance attempts to incorporate the risks inherent in the portfolio, economic uncertainties, competition, and regulatory requirements and other subjective factors such as changes in underwriting standards. It also considers overall portfolio indicators, including current and historical credit losses; delinquent, nonperforming and criticized loans; portfolio concentrations; trends in volumes and terms of loans; and economic trends in the broad market and in specific industries.
A portion of the allowance for loan and lease losses is attributed to impaired loans that are individually measured for impairment. This measurement considers all available evidence, including as appropriate, the probability that a specific loan will default, the expected exposure of a loan at default, an estimate of loss given default, the present value of expected future cash flows discounted using the loan’s contractual effective rate, the secondary market value of the loan and the fair value of collateral.
The allowance for loan and lease losses is decreased by the amount of charge-offs and increased by the amount of recoveries. Generally, commercial, commercial real estate and real estate construction loans are charged off when it is determined that advances to the borrower are in excess of the calculated current fair value of the collateral and if a borrower is deemed incapable of repayment of unsecured debt, there is little or no prospect for near term improvement and no realistic strengthening action of significance pending. Consumer loans are charged-off based on delinquency, ranging from 60 days for overdrafts to 180 days for secured consumer loans, or earlier when it is determined that the loan is uncollectible due to a triggering event, such as bankruptcy, fraud or death.
The following is a summary of activity in the allowance for loan and lease losses and period-end recorded investment balances of loans evaluated for impairment, excluding covered loans, for the three and nine months ended September 30, 2013 and 2012. Activity is provided by loan portfolio segment which is consistent with the Company’s methodology for determining the allowance for loan and lease losses.
(in thousands)	Commercial			Commercial			Residential			Real Estate			Home Equity			Installment			Unallocated			Total
	-1			Real Estate			Mortgages			Construction			Loans and
				Mortgages									Lines of Credit
Three months ended September 30, 2013
Allowance for loan and lease losses:
Beginning balance	$	116,619		$	53,339		$	8,004		$	8,335		$	5,400		$	1,355		$	96,862		$	289,914
Provision (reduction) for credit losses (2)	(14,173		)	(2,829		)	5,070			(1,589		)	3,092			317			9,363			(749		)
Charge-offs	(488		)	(1,270		)	—			—			(225		)	(18		)	—			(2,001		)
Recoveries	4,863			686			40			2,945			31			218			—			8,783
Net recoveries (charge-offs)	4,375			(584		)	40			2,945			(194		)	200			—			6,782
Ending balance	$	106,821		$	49,926		$	13,114		$	9,691		$	8,298		$	1,872		$	106,225		$	295,947
Nine months ended September 30, 2013
Allowance for loan and lease losses:
Beginning balance	$	104,731		$	48,901		$	10,558		$	11,784		$	7,283		$	1,858		$	92,773		$	277,888
Provision (reduction) for credit losses (2)	(7,313		)	572			2,547			(10,386		)	946			(854		)	13,452			(1,036		)
Charge-offs	(4,719		)	(1,315		)	(106		)	(100		)	(500		)	(370		)	—			(7,110		)
Recoveries	14,122			1,768			115			8,393			569			1,238			—			26,205
Net recoveries (charge-offs)	9,403			453			9			8,293			69			868			—			19,095
Ending balance	$	106,821		$	49,926		$	13,114		$	9,691		$	8,298		$	1,872		$	106,225		$	295,947
Ending balance of allowance:
Individually evaluated for impairment	$	344		$	602		$	232		$	—		$	—		$	—		$	—		$	1,178
Collectively evaluated for impairment	106,477			49,324			12,882			9,691			8,298			1,872			106,225			294,769
Loans and leases, excluding covered loans
Ending balance of loans and leases:
Loans and leases, excluding covered loans	$	7,856,244		$	3,077,183		$	4,418,231		$	380,489		$	681,879		$	152,107		$	—		$	16,566,133
Individually evaluated for impairment	32,727			38,546			6,767			30,190			2,350			—			—			110,580
Collectively evaluated for impairment	7,823,517			3,038,637			4,411,464			350,299			679,529			152,107			—			16,455,553
(1)             Includes lease financing loans.
(2)             Provision for credit losses in the allowance rollforward for the three months ended September 30, 2013 includes total transfers to the reserve for off-balance sheet credit commitments of $0.7 million. Provision for credit losses in the allowance rollforward for the nine months ended September 30, 2013 includes total transfers to the reserve for off-balance sheet credit commitments of $1.0 million. There was no other provision for credit losses recognized for the three and nine months ended September 30, 2013.
(in thousands)	Commercial			Commercial			Residential			Real Estate			Home Equity			Installment			Unallocated			Total
	-1			Real Estate			Mortgages			Construction			Loans and
				Mortgages									Lines of Credit
Three months ended September 30, 2012
Allowance for loan and lease losses:
Beginning balance	$	93,981		$	49,715		$	12,490		$	14,810		$	7,656		$	1,774		$	89,108		$	269,534
Provision (reduction) for credit losses (2)	6,333			(1,298		)	1,327			(3,898		)	47			(314		)	(1,106		)	1,091
Charge-offs	(12,163		)	(444		)	(1,030		)	(310		)	(43		)	(134		)	—			(14,124		)
Recoveries	7,227			203			495			3,415			11			588			—			11,939
Net (charge-offs) recoveries	(4,936		)	(241		)	(535		)	3,105			(32		)	454			—			(2,185		)
Ending balance	$	95,378		$	48,176		$	13,282		$	14,017		$	7,671		$	1,914		$	88,002		$	268,440
Nine months ended September 30, 2012
Allowance for loan and lease losses:
Beginning balance	$	83,514		$	48,451		$	14,122		$	20,155		$	8,077		$	1,972		$	86,266		$	262,557
Provision (reduction) for credit losses (2)	3,425			(481		)	732			(4,508		)	588			(655		)	1,736			837
Charge-offs	(22,382		)	(1,318		)	(2,333		)	(9,769		)	(1,077		)	(959		)	—			(37,838		)
Recoveries	30,821			1,524			761			8,139			83			1,556			—			42,884
Net (charge-offs) recoveries	8,439			206			(1,572		)	(1,630		)	(994		)	597			—			5,046
Ending balance	$	95,378		$	48,176		$	13,282		$	14,017		$	7,671		$	1,914		$	88,002		$	268,440
Ending balance of allowance:
Individually evaluated for impairment	$	1,167		$	1,874		$	185		$	1,467		$	138		$	—		$	—		$	4,831
Collectively evaluated for impairment	94,211			46,302			13,097			12,550			7,533			1,914			88,002			263,609
Loans and leases, excluding covered loans
Ending balance of loans and leases:
Loans and leases, excluding covered loans	$	6,264,562		$	2,436,218		$	3,897,690		$	269,583		$	718,966		$	137,632		$	—		$	13,724,651
Individually evaluated for impairment	34,731			58,217			11,342			56,582			4,496			449			—			165,817
Collectively evaluated for impairment	6,229,831			2,378,001			3,886,348			213,001			714,470			137,183			—			13,558,834
(1)             Includes lease financing loans.
(2)             Provision for credit losses in the allowance rollforward for the three months ended September 30, 2012 includes total provision expense of $2.0 million, net of total transfers to the reserve for off-balance sheet credit commitments of $0.9 million. Provision for credit losses for the nine months ended September 30, 2012 includes total provision expense of $3.0 million, net of total transfers to the reserve for off-balance sheet credit commitments of $2.2 million.
Off-balance sheet credit exposures include loan commitments and letters of credit. The following table provides a summary of activity in the reserve for off-balance sheet credit commitments for the three and nine months ended September 30, 2013 and 2012:
	For the three months ended						For the nine months ended
	September 30,						September 30,
(in thousands)	2013			2012			2013			2012
Balance, beginning of period	$	25,124		$	24,351		$	24,837		$	23,097
Transfers from allowance for loan and lease losses	749			909			1,036			2,163
Balance, end of period	$	25,873		$	25,260		$	25,873		$	25,260
Impaired Loans and Leases
Information on impaired loans, excluding covered loans, at September 30, 2013, December 31, 2012 and September 30, 2012 is provided in the following tables:
										For the three months ended						For the nine months ended
				Unpaid						September 30, 2013						September 30, 2013
				Contractual						Average			Interest			Average			Interest
	Recorded			Principal			Related			Recorded			Income			Recorded			Income
(in thousands)	Investment			Balance			Allowance			Investment			Recognized			Investment			Recognized
September 30, 2013
With no related allowance recorded:
Commercial	$	25,233		$	25,488		$	—		$	26,255		$	593		$	22,584		$	1,440
Commercial real estate mortgages	33,133			37,754			—			29,977			440			33,060			1,102
Residential mortgages:
Fixed	2,031			2,155			—			2,019			33			2,860			75
Variable	3,062			3,418			—			3,670			47			4,062			116
Total residential mortgages	5,093			5,573			—			5,689			80			6,922			191
Real estate construction:
Construction	16,259			21,064			—			16,262			233			17,904			791
Land	13,931			27,092			—			14,056			224			16,506			511
Total real estate construction	30,190			48,156			—			30,318			457			34,410			1,302
Home equity loans and lines of credit	2,350			3,375			—			2,803			47			2,827			81
Installment:
Consumer	—			—			—			—			—			112			—
Total installment	—			—			—			—			—			112			—
Total with no related allowance	$	95,999		$	120,346		$	—		$	95,042		$	1,617		$	99,915		$	4,116
With an allowance recorded:
Commercial	$	7,494		$	9,168		$	344		$	7,567		$	156		$	7,556		$	513
Commercial real estate mortgages	5,413			5,810			602			10,262			45			11,018			361
Residential mortgages:
Fixed	—			—			—			—			—			116			—
Variable	1,674			1,688			232			1,684			14			842			55
Total residential mortgages	1,674			1,688			232			1,684			14			958			55
Real estate construction:
Land	—			—			—			—			—			3,213			213
Total real estate construction	—			—			—			—			—			3,213			213
Home equity loans and lines of credit	—			—			—			—			—			225			—
Total with an allowance	$	14,581		$	16,666		$	1,178		$	19,513		$	215		$	22,970		$	1,142
Total impaired loans by type:
Commercial	$	32,727		$	34,656		$	344		$	33,822		$	749		$	30,140		$	1,953
Commercial real estate mortgages	38,546			43,564			602			40,239			485			44,078			1,463
Residential mortgages	6,767			7,261			232			7,373			94			7,880			246
Real estate construction	30,190			48,156			—			30,318			457			37,623			1,515
Home equity loans and lines of credit	2,350			3,375			—			2,803			47			3,052			81
Installment	—			—			—			—			—			112			—
Total impaired loans	$	110,580		$	137,012		$	1,178		$	114,555		$	1,832		$	122,885		$	5,258
(in thousands)	Recorded			Unpaid			Related
	Investment			Contractual			Allowance
				Principal
				Balance
December 31, 2012
With no related allowance recorded:
Commercial	$	18,761		$	24,135		$	—
Commercial real estate mortgages	42,882			49,110			—
Residential mortgages:
Fixed	3,482			3,757			—
Variable	4,865			5,437			—
Total residential mortgages	8,347			9,194			—
Real estate construction:
Construction	19,762			33,267			—
Land	25,748			41,016			—
Total real estate construction	45,510			74,283			—
Home equity loans and lines of credit	3,562			4,660			—
Installment:
Consumer	449			927			—
Total installment	449			927			—
Total with no related allowance	$	119,511		$	162,309		$	—
With an allowance recorded:
Commercial	$	7,516		$	8,038		$	952
Commercial real estate mortgages	10,203			10,783			1,326
Residential mortgages:
Fixed	463			507			9
Total residential mortgages	463			507			9
Home equity loans and lines of credit	899			965			116
Total with an allowance	$	19,081		$	20,293		$	2,403
Total impaired loans by type:
Commercial	$	26,277		$	32,173		$	952
Commercial real estate mortgages	53,085			59,893			1,326
Residential mortgages	8,810			9,701			9
Real estate construction	45,510			74,283			—
Home equity loans and lines of credit	4,461			5,625			116
Installment	449			927			—
Total impaired loans	$	138,592		$	182,602		$	2,403
										For the three months ended						For the nine months ended
				Unpaid						September 30, 2012						September 30, 2012
				Contractual						Average			Interest			Average			Interest
	Recorded			Principal			Related			Recorded			Income			Recorded			Income
(in thousands)	Investment			Balance			Allowance			Investment			Recognized			Investment			Recognized
September 30, 2012
With no related allowance recorded:
Commercial	$	28,575		$	39,624		$	—		$	30,476		$	—		$	24,732		$	—
Commercial real estate mortgages	40,825			46,081			—			34,597			34			25,767			158
Residential mortgages:
Fixed	4,199			4,613			—			3,014			—			3,047			—
Variable	3,528			3,968			—			4,893			9			5,010			48
Total residential mortgages	7,727			8,581			—			7,907			9			8,057			48
Real estate construction:
Construction	29,446			42,870			—			34,137			245			29,189			487
Land	19,038			23,606			—			18,987			35			22,763			35
Total real estate construction	48,484			66,476			—			53,124			280			51,952			522
Home equity loans and lines of credit	3,297			4,370			—			3,252			—			4,470			—
Installment:																			—
Consumer	449			927			—			500			—			552			—
Total installment	449			927			—			500			—			552			—
Lease financing	—			—			—			—			—			7			—
Total with no related allowance	$	129,357		$	166,059		$	—		$	129,856		$	323		$	115,537		$	728
With an allowance recorded:
Commercial	$	6,156		$	6,922		$	1,167		$	8,461		$	—		$	11,286		$	—
Commercial real estate mortgages	17,392			18,962			1,874			17,257			—			13,406			—
Residential mortgages:
Fixed	2,229			2,336			181			2,260			—			1,844			—
Variable	1,386			1,476			4			2,321			4			1,879			4
Total residential mortgages	3,615			3,812			185			4,581			4			3,723			4
Real estate construction:
Land	8,098			18,362			1,467			8,432			—			14,700			—
Total real estate construction	8,098			18,362			1,467			8,432			—			14,700			—
Home equity loans and lines of credit	1,199			1,406			138			1,213			—			1,166			—
Total with an allowance	$	36,460		$	49,464		$	4,831		$	39,944		$	4		$	44,281		$	4
Total impaired loans by type:
Commercial	$	34,731		$	46,546		$	1,167		$	38,937		$	—		$	36,018		$	—
Commercial real estate mortgages	58,217			65,043			1,874			51,854			34			39,173			158
Residential mortgages	11,342			12,393			185			12,488			13			11,780			52
Real estate construction	56,582			84,838			1,467			61,556			280			66,652			522
Home equity loans and lines of credit	4,496			5,776			138			4,465			—			5,636			—
Installment	449			927			—			500			—			552			—
Lease financing	—			—			—			—			—			7			—
Total impaired loans	$	165,817		$	215,523		$	4,831		$	169,800		$	327		$	159,818		$	732
Effective July 1, 2012, the Company increased the outstanding loan amount under which nonperforming loans are individually evaluated for impairment from $500,000 or greater to $1 million or greater. For borrowers with multiple loans totaling $1 million or more, this threshold is applied at the total relationship level. Loans under $1 million will be measured for impairment using historical loss factors. Loans under $1 million that were previously reported as impaired at June 30, 2012 will continue to be reported as impaired until the collection of principal and interest is no longer in doubt, or the loans are paid or charged-off. At September 30, 2013, impaired loans included $6.1 million of loans previously reported as impaired that are less than $1 million.
Impaired loans at September 30, 2013 and December 31, 2012 included $52.5 million and $48.8 million, respectively, of restructured loans that are on accrual status. With the exception of restructured loans on accrual status and a limited number of loans on cash basis nonaccrual for which the full collection of principal and interest is expected, interest income is not recognized on impaired loans until the principal balance of these loans is paid off.
Troubled Debt Restructured Loans
The following table provides a summary of loans modified in a troubled debt restructuring during the three months ended September 30, 2013 and 2012:
(in thousands)	Number of		Pre-Modification			Period-End			Financial
	Contracts		Outstanding			Outstanding			Effects (1)
			Principal			Principal
Three months ended September 30, 2013
Commercial	2		$	7,575		$	7,486		$	344
Total troubled debt restructured loans	2		$	7,575		$	7,486		$	344
Three months ended September 30, 2012
Commercial	6		$	1,624		$	1,538		$	10,528
Residential mortgages:
Fixed	3		1,578			1,078			485
Real estate construction:
Land	1		8,420			8,098			264
Home equity loans and lines of credit	1		257			149			—
Total troubled debt restructured loans	11		$	11,879		$	10,863		$	11,277
(1) Financial effects are comprised of charge-offs and specific reserves recognized on TDR loans at modification date.
The following table provides a summary of loans modified in a troubled debt restructuring during the nine months ended September 30, 2013 and 2012:
(in thousands)	Number of		Pre-Modification			Period-End			Financial
	Contracts		Outstanding			Outstanding			Effects (1)
			Principal			Principal
Nine months ended September 30, 2013
Commercial	12		$	16,258		$	13,624		$	344
Commercial real estate mortgages	1		547			533			—
Home equity loans and lines of credit	1		345			—			—
Total troubled debt restructured loans	14		$	17,150		$	14,157		$	344
Nine months ended September 30, 2012
Commercial	15		$	36,785		$	23,219		$	10,528
Commercial real estate mortgages	2		15,832			16,353			—
Residential mortgages:
Fixed	4		2,233			1,078			485
Real estate construction:
Construction	3		14,857			14,226			—
Land	1		8,420			8,098			264
Total real estate construction	4		23,277			22,324			264
Home equity loans and lines of credit	1		257			149			—
Total troubled debt restructured loans	26		$	78,384		$	63,123		$	11,277
(1) Financial effects are comprised of charge-offs and specific reserves recognized on TDR loans at modification date.
The following tables provide a summary of troubled debt restructured (“TDR”) loans that subsequently defaulted during the three and nine months ended September 30, 2013 and 2012, that had been modified as a troubled debt restructuring during the 12 months prior to their default. A TDR loan is considered to be in default when payments are 90 days or more past due.
	For three months ended September 30, 2013								For nine months ended September 30, 2013
(in thousands)	Number of		Period-End			Period-End			Number of		Period-End			Period-End
	Contracts		Outstanding			Specific			Contracts		Outstanding			Specific
			Principal			Reserve					Principal			Reserve
Commercial	—		$	—		$	—		4		$	896		$	—
Real estate construction:
Land	—		—			—			1		7,244			—
Home equity loans and lines of credit	—		—			—			1		139			—
Total loans that subsequently defaulted	—		$	—		$	—		6		$	8,279		$	—
	For three months ended September 30, 2012								For nine months ended September 30, 2012
(in thousands)	Number of		Period-End			Period-End			Number of		Period-End			Period-End
	Contracts		Outstanding			Specific			Contracts		Outstanding			Specific
			Principal			Reserve					Principal			Reserve
Commercial	1		$	688		$	—		5		$	4,581		$	277
Real estate construction:
Land	—		—			—			2		1,372			—
Total loans that subsequently defaulted	1		$	688		$	—		7		$	5,953		$	277
A restructuring constitutes a troubled debt restructuring when a lender, for reasons related to a borrower’s financial difficulties, grants a concession to the borrower that it would not otherwise consider. Loans with pre-modification outstanding balances totaling $7.6 million and $17.2 million were modified in troubled debt restructurings during the three and nine months ended September 30, 2013, respectively. Loans with pre-modification outstanding balances totaling $11.9 million and $78.4 million were modified in troubled debt restructurings during the three and nine months ended September 30, 2012, respectively. The concessions granted in the restructurings completed in 2013 largely consisted of maturity extensions and interest rate modifications.
The unpaid principal balance of TDR loans was $69.3 million, before specific reserves of $0.9 million, at September 30, 2013 and $94.9 million, before specific reserves of $1.7 million, at December 31, 2012. The net decrease in TDR loans from the prior year-end was primarily attributable to payments received on existing TDR loans and to the removal of $15.3 million of loans that were restructured in an A/B note structure in 2012 that are no longer reported as TDRs. These decreases were partially offset by the addition of $17.2 million of loans restructured during the first nine months of 2013. Loans restructured in an A/B note restructuring are not reported as TDR loans in years after the restructuring if the restructuring agreement specifies an interest rate equal to or greater than the rate the lender was willing to accept at the time of restructuring for a new loan with comparable risk, and the loan is performing based on the terms in the restructuring agreement. In an A/B restructuring, the original note is separated into two notes where the A note represents the portion of the original loan that is expected to be fully paid, and the B note is the portion of the loan that is expected to be uncollectible. The B note is charged-off at the time of restructuring. Loans modified in troubled debt restructurings are impaired loans at the time of restructuring and subject to the same measurement criteria as all other impaired loans.
During the nine months ended September 30, 2013, four commercial loans, one real estate construction loan and one equity line of credit that had been restructured within the preceding 12 months were not performing in accordance with their modified terms. The defaults were primarily due to missed or late payments. All other TDR loans were performing in accordance with their restructured terms at September 30, 2013. As of September 30, 2013, commitments to lend additional funds on restructured loans totaled $1.3 million.
Past Due and Nonaccrual Loans and Leases
Loans are considered past due following the date when either interest or principal is contractually due and unpaid. The following tables provide a summary of past due and nonaccrual loans, excluding covered loans, at September 30, 2013 and December 31, 2012 based upon the length of time the loans have been past due:
(in thousands)	30-59 Days			60-89 Days			Greater			Nonaccrual			Total Past			Current			Total Loans and
	Past Due			Past Due			Than 90						Due and						Leases
							Days and						Nonaccrual
							Accruing						Loans
September 30, 2013
Commercial	$	8,052		$	964		$	3		$	10,073		$	19,092		$	7,107,066		$	7,126,158
Commercial real estate mortgages	2,631			—			—			19,020			21,651			3,055,532			3,077,183
Residential mortgages:
Fixed	—			1,238			379			3,901			5,518			1,457,866			1,463,384
Variable	—			2,375			—			5,773			8,148			2,946,699			2,954,847
Total residential mortgages	—			3,613			379			9,674			13,666			4,404,565			4,418,231
Real estate construction:
Construction	—			—			—			11,553			11,553			339,138			350,691
Land	—			—			—			13,918			13,918			15,880			29,798
Total real estate construction	—			—			—			25,471			25,471			355,018			380,489
Home equity loans and lines of credit	274			—			—			5,289			5,563			676,316			681,879
Installment:
Commercial	—			—			—			—			—			379			379
Consumer	24			—			—			21			45			151,683			151,728
Total installment	24			—			—			21			45			152,062			152,107
Lease financing	—			12			1			54			67			730,019			730,086
Total	$	10,981		$	4,589		$	383		$	69,602		$	85,555		$	16,480,578		$	16,566,133
December 31, 2012
Commercial	$	6,207		$	4,219		$	602		$	9,087		$	20,115		$	6,191,238		$	6,211,353
Commercial real estate mortgages	16,968			3,249			—			33,198			53,415			2,685,869			2,739,284
Residential mortgages:
Fixed	—			1,969			379			4,902			7,250			1,458,224			1,465,474
Variable	—			—			—			4,701			4,701			2,492,030			2,496,731
Total residential mortgages	—			1,969			379			9,603			11,951			3,950,254			3,962,205
Real estate construction:
Construction	—			—			—			15,067			15,067			239,740			254,807
Land	—			859			—			25,815			26,674			31,709			58,383
Total real estate construction	—			859			—			40,882			41,741			271,449			313,190
Home equity loans and lines of credit	3,407			480			—			6,424			10,311			701,439			711,750
Installment:
Commercial	—			—			—			—			—			437			437
Consumer	58			35			—			473			566			141,790			142,356
Total installment	58			35			—			473			566			142,227			142,793
Lease financing	2,633			2			—			120			2,755			734,965			737,720
Total	$	29,273		$	10,813		$	981		$	99,787		$	140,854		$	14,677,441		$	14,818,295
Credit Quality Monitoring
The Company closely monitors and assesses credit quality and credit risk in the loan and lease portfolio on an ongoing basis. Loan risk classifications are continuously reviewed and updated. The following tables provide a summary of the loan and lease portfolio, excluding covered loans, by loan type and credit quality classification as of September 30, 2013 and December 31, 2012. Nonclassified loans generally include those loans that are expected to be repaid in accordance with contractual loan terms. Classified loans are those loans that are classified as substandard or doubtful consistent with regulatory guidelines.
	September 30, 2013									December 31, 2012
(in thousands)	Nonclassified			Classified			Total			Nonclassified			Classified			Total
Commercial	$	7,011,906		$	114,252		$	7,126,158		$	6,073,459		$	137,894		$	6,211,353
Commercial real estate mortgages	2,961,319			115,864			3,077,183			2,597,863			141,421			2,739,284
Residential mortgages:
Fixed	1,443,459			19,925			1,463,384			1,449,270			16,204			1,465,474
Variable	2,931,433			23,414			2,954,847			2,479,449			17,282			2,496,731
Total residential mortgages	4,374,892			43,339			4,418,231			3,928,719			33,486			3,962,205
Real estate construction:
Construction	324,908			25,783			350,691			225,577			29,230			254,807
Land	15,589			14,209			29,798			28,710			29,673			58,383
Total real estate construction	340,497			39,992			380,489			254,287			58,903			313,190
Home equity loans and lines of credit	653,349			28,530			681,879			685,011			26,739			711,750
Installment:
Commercial	379			—			379			437			—			437
Consumer	151,370			358			151,728			141,662			694			142,356
Total installment	151,749			358			152,107			142,099			694			142,793
Lease financing	727,500			2,586			730,086			733,803			3,917			737,720
Total	$	16,221,212		$	344,921		$	16,566,133		$	14,415,241		$	403,054		$	14,818,295
Credit Quality on Covered Loans
The following is a summary of activity in the allowance for losses on covered loans:
	For the three months ended						For the nine months ended
	September 30,						September 30,
(in thousands)	2013			2012			2013			2012
Balance, beginning of period	$	24,414		$	43,147		$	44,781		$	64,565
Provision for losses	2,496			18,089			461			38,848
Reduction in allowance due to loan removals	(1,028		)	(16,258		)	(19,360		)	(58,435		)
Balance, end of period	$	25,882		$	44,978		$	25,882		$	44,978
The allowance for losses on covered loans was $25.9 million, $44.8 million and $45.0 million as of September 30, 2013, December 31, 2012 and September 30, 2012, respectively. The Company recorded provision expense of $2.5 million and $0.5 million on covered loans during the three and nine months ended September 30, 2013, respectively. Provision expense was $18.1 million and $38.8 million for the three and nine months ended September 30, 2012, respectively. The Company updates its cash flow projections for covered loans accounted for under ASC 310-30 on a quarterly basis, and may recognize provision expense or reversal of its allowance for loan losses as a result of that analysis. The provision expense or reversal of allowance on covered loans is the result of changes in expected cash flows, both amount and timing, due to loan payments and the Company’s revised loss and prepayment forecasts. The revisions of the loss forecasts were based on the results of management’s review of market conditions, the credit quality of the outstanding covered loans and the analysis of loan
performance data since the acquisition of covered loans. The allowance for losses on covered loans is reduced for any loan removals, which occur when a loan has been fully paid off, fully charged off, sold or transferred to OREO.
Covered loans accounted for under ASC 310-30 are generally considered accruing and performing loans as the loans accrete interest income over the estimated life of the loan when cash flows are reasonably estimable. Accordingly, acquired impaired loans that are contractually past due are still considered to be accruing and performing loans. If the timing and amount of future cash flows is not reasonably estimable, the loans may be classified as nonaccrual loans and interest income is not recognized until the timing and amount of future cash flows can be reasonably estimated. There were no covered loans that were on nonaccrual status as of September 30, 2013 and December 31, 2012.
At September 30, 2013, covered loans that were 30 to 89 days delinquent totaled $6.4 million and covered loans that were 90 days or more past due on accrual status totaled $63.1 million. At December 31, 2012, covered loans that were 30 to 89 days delinquent totaled $43.4 million and covered loans that were 90 days or more past due on accrual status totaled $112.4 million.

Other_Real_Estate_Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2013
Other Real Estate Owned	'
Other Real Estate Owned	'
	Note 7. Other Real Estate Owned
	The following table provides a summary of OREO activity for the three months ended September 30, 2013 and 2012:
		For the three months ended									For the three months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Non-Covered			Covered			Total			Non-Covered			Covered			Total
		OREO			OREO						OREO			OREO
	Balance, beginning of period	$	19,676		$	41,801		$	61,477		$	34,667		$	82,834		$	117,501
	Additions	—			4,008			4,008			1,485			14,989			16,474
	Sales	(771		)	(14,435		)	(15,206		)	(8,364		)	(9,938		)	(18,302		)
	Valuation adjustments	—			(1,556		)	(1,556		)	(733		)	(4,267		)	(5,000		)
	Balance, end of period	$	18,905		$	29,818		$	48,723		$	27,055		$	83,618		$	110,673
	The following table provides a summary of OREO activity for the nine months ended September 30, 2013 and 2012:
		For the nine months ended									For the nine months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Non-Covered			Covered			Total			Non-Covered			Covered			Total
		OREO			OREO						OREO			OREO
	Balance, beginning of period	$	21,027		$	58,276		$	79,303		$	30,790		$	98,550		$	129,340
	Additions	723			17,914			18,637			14,177			44,025			58,202
	Sales	(2,552		)	(39,597		)	(42,149		)	(12,781		)	(42,632		)	(55,413		)
	Valuation adjustments	(293		)	(6,775		)	(7,068		)	(5,131		)	(16,325		)	(21,456		)
	Balance, end of period	$	18,905		$	29,818		$	48,723		$	27,055		$	83,618		$	110,673
	At September 30, 2013, OREO was $48.7 million and included $29.8 million of covered OREO. At December 31, 2012, OREO was $79.3 million and included $58.3 million of covered OREO. The balance of OREO at September 30, 2013 and December 31, 2012 is net of valuation allowances of $20.0 million and $33.6 million, respectively.
	Covered OREO expenses and valuation write-downs are recorded in the noninterest expense section of the consolidated statements of income and gains or losses on sale of covered OREO are recognized in the noninterest income section. Under the loss sharing agreements, 80 percent of eligible covered OREO expenses, valuation write-downs, and losses on sales are reimbursable to the Company from the FDIC and 80 percent of covered gains on sales are payable to the FDIC. The portion of these expenses that is reimbursable or income that is payable is recorded in FDIC loss sharing income (expense), net in the noninterest income section of the consolidated statements of income.

Borrowed_Funds

Borrowed Funds	9 Months Ended
	Sep. 30, 2013
Borrowed Funds	'
Borrowed Funds	'
	Note 8. Borrowed Funds
	Short-term borrowings consist of funds with remaining maturities of one year or less and long-term debt consists of borrowings with remaining maturities greater than one year. The components of short-term borrowings and long-term debt as of September 30, 2013 and December 31, 2012 are provided below:
		September 30,		December 31,
	(in thousands) (1)	2013		2012
	Short-term borrowings
	Current portion of senior notes:
	City National Corporation - 5.125% Senior Notes Due February 2013	$	—	$	206,581
	Federal funds purchased	—		1,214,200
	Current portion of nonrecourse debt (5)	2,588		3,017
	Total short-term borrowings	$	2,588	$	1,423,798
	Long-term debt
	Senior notes:
	City National Corporation - 5.25% Senior Notes Due September 2020	$	299,444	$	297,613
	Subordinated debt:
	City National Bank - 9.00% Subordinated Notes Due July 2019 (2)	50,000		49,755
	City National Bank - 9.00% Subordinated Notes Due August 2019	75,000		74,876
	City National Bank - Fixed and Floating Subordinated Notes due August 2019 (3)	55,000		54,909
	City National Bank - 5.375% Subordinated Notes Due July 2022	149,993		148,642
	Junior subordinated debt:
	Floating Rate Business Bancorp Capital Trust I Securities due November 2034 (4)	5,155		5,152
	Nonrecourse debt (5)	84,734		75,104
	Total long-term debt	$	719,326	$	706,051
	(1)              The carrying value of certain borrowed funds is net of discount which is being amortized into interest expense, as well as the impact of fair value hedge accounting, if applicable.
	(2)              These notes bear a fixed interest rate of 9 percent for the initial five years from the date of issuance (July 15, 2009) and thereafter the rate is reset at the Bank’s option to either LIBOR plus 6 percent or to prime plus 5 percent. These notes are callable by the Bank, subject to any prior approval requirements of the Office of the Comptroller of the Currency (“OCC”), on or after July 2014.
	(3)              These notes bear a fixed interest rate of 9 percent for the initial five years from the date of issuance (August 12, 2009) and thereafter bear an interest rate equal to the three-month LIBOR rate plus 6 percent.  The rate is reset quarterly and is subject to an interest rate cap of 10 percent throughout the term of the notes. These notes are callable by the Bank, subject to any prior approval requirements of the OCC, on or after August 2014.
	(4)              These floating rate securities pay interest of three-month LIBOR plus 1.965 percent which is reset quarterly.  As of September 30, 2013, the interest rate was approximately 2.23 percent.
	(5)              Nonrecourse debt bears interest at an average rate of 3.88 percent as of September 30, 2013 and has maturity dates ranging from November 2013 to December 2019.
	The Company holds debt affiliated with FAEF, its wholly-owned equipment finance subsidiary. FAEF assigns the future rentals of certain lease financing loans to financial institutions on a nonrecourse basis at fixed interest rates. In return for future minimum lease rentals assigned, FAEF receives a discounted cash payment. Proceeds from discounting are reflected in the table above as nonrecourse debt.

Shareholders_Equity

Shareholders' Equity	9 Months Ended
	Sep. 30, 2013
Shareholders' Equity	'
Shareholders' Equity	'
	Note 9. Shareholders’ Equity
	On November 13, 2012, the Corporation issued 7 million depositary shares, each representing a 1/40th interest in a share of 5.50 percent Series C non-cumulative perpetual preferred stock with a liquidation preference of $1,000 per share (equivalent to $25.00 per depositary share). Net proceeds, after issuance cost, were approximately $169.9 million. Dividends on the preferred stock are payable quarterly, in arrears, if declared by the Corporation’s Board of Directors. The preferred stock has no maturity date and may be redeemed in whole or in part at the option of the Corporation on any dividend payment date after five years from the date of issuance.
	The components of AOCI at September 30, 2013 and December 31, 2012 are as follows:
		September 30,			December 31,
	(in thousands)	2013			2012
	Net unrealized (loss) gain on securities available-for-sale	$	(10,355	)	$	86,526
	Net unrealized gain on cash flow hedges	—			56
	Total accumulated other comprehensive (loss) income	$	(10,355	)	$	86,582
	The following table presents the tax effects allocated to each component of other comprehensive (loss) income for the three and nine month periods ended September 30, 2013 and 2012:
		For the three months ended									For the three months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Pre-tax			Tax expense			Net-of-tax			Pre-tax			Tax expense			Net-of-tax
					(benefit)									(benefit)
	Securities available-for-sale:
	Net unrealized (losses) gains arising during the period	$	(23,334	)	$	(9,761	)	$	(13,573	)	$	20,701		$	8,659		$	12,042
	Reclassification adjustment for net gains included in net income (1)	(5,788		)	(2,421		)	(3,367		)	(48		)	(20		)	(28		)
	Non-credit related impairment loss	—			—			—			(1,471		)	(615		)	(856		)
	Total securities available-for-sale	(29,122		)	(12,182		)	(16,940		)	19,182			8,024			11,158
	Net change on cash flow hedges	—			—			—			(42		)	—			(42		)
	Total other comprehensive (loss) income	$	(29,122	)	$	(12,182	)	$	(16,940	)	$	19,140		$	8,024		$	11,116
	(1)    Recognized in Gain on sale of securities in the consolidated statements of income.
		For the nine months ended									For the nine months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Pre-tax			Tax expense			Net-of-tax			Pre-tax			Tax expense			Net-of-tax
					(benefit)									(benefit)
	Securities available-for-sale:
	Net unrealized (losses) gains arising during the period	$	(155,089	)	$	(64,874	)	$	(90,215	)	$	37,330		$	15,615		$	21,715
	Reclassification adjustment for net gains included in net income (1)	(11,460		)	(4,794		)	(6,666		)	(459		)	(192		)	(267		)
	Non-credit related impairment loss	—			—			—			(1,471		)	(615		)	(856		)
	Total securities available-for-sale	(166,549		)	(69,668		)	(96,881		)	35,400			14,808			20,592
	Net change on cash flow hedges	(56		)	—			(56		)	(125		)	—			(125		)
	Pension liability adjustment (2)	—			—			—			1,085			—			1,085
	Total other comprehensive (loss) income	$	(166,605	)	$	(69,668	)	$	(96,937	)	$	36,360		$	14,808		$	21,552
	(1)    Recognized in Gain on sale of securities in the consolidated statements of income.
	(2)    Recognized in Salaries and employee benefits in the consolidated statements of income. See Note 15 for additional information.
	The following table summarizes the Company’s share repurchases for the three months ended September 30, 2013. All repurchases relate to shares withheld or previously owned shares used to pay taxes due upon vesting of restricted stock. There were no issuer repurchases of the Corporation’s common stock as part of its repurchase plan for the three months ended September 30, 2013.
	Period	Total Number		Average
		of Shares		Price Paid
		(or Units)		per Share
		Purchased		(or Unit)
	July 1, 2013 to July 31, 2013	1,912		$	68.13
	August 1, 2013 to August 31, 2013	12		65.47
	September 1, 2013 to September 30, 2013	3,022		65.7
	Total share repurchases	4,946		66.64

Earnings_per_Common_Share

Earnings per Common Share	9 Months Ended
	Sep. 30, 2013
Earnings per Common Share	'
Earnings per Common Share	'
	Note 10. Earnings per Common Share
	The Company applies the two-class method of computing basic and diluted EPS. Under the two-class method, EPS is determined for each class of common stock and participating security according to dividends declared and participation rights in undistributed earnings. The Company grants restricted stock and restricted stock units under a share-based compensation plan that qualify as participating securities.
	The computation of basic and diluted EPS is presented in the following table:
		For the three months ended				For the nine months ended
		September 30,				September 30,
	(in thousands, except per share amounts)	2013		2012		2013		2012
	Basic EPS:
	Net income attributable to City National Corporation	$	63,633	$	59,780	$	174,897	$	160,803
	Less: Dividends on preferred stock	2,407		—		7,219		—
	Net income available to common shareholders	$	61,226	$	59,780	$	167,678	$	160,803
	Less: Earnings allocated to participating securities	688		842		1,975		2,380
	Earnings allocated to common shareholders	$	60,538	$	58,938	$	165,703	$	158,423
	Weighted average common shares outstanding	54,274		53,425		54,039		53,092
	Basic earnings per common share	$	1.12	$	1.1	$	3.07	$	2.98
	Diluted EPS:
	Earnings allocated to common shareholders (1)	$	60,543	$	58,941	$	165,716	$	158,432
	Weighted average common shares outstanding	54,274		53,425		54,039		53,092
	Dilutive effect of equity awards	546		286		425		284
	Weighted average diluted common shares outstanding	54,820		53,711		54,464		53,376
	Diluted earnings per common share	$	1.1	$	1.1	$	3.04	$	2.97
	(1)    Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.
	The average price of the Company’s common stock for the period is used to determine the dilutive effect of outstanding stock options. Antidilutive stock options are not included in the calculation of basic or diluted EPS. There were 1.0 million and 2.4 million average outstanding stock options that were antidilutive for the three months ended September 30, 2013 and 2012, respectively. There were 1.9 million and 2.7 million average outstanding stock options that were antidilutive for the nine months ended September 30, 2013 and 2012, respectively.

ShareBased_Compensation

Share-Based Compensation	9 Months Ended
	Sep. 30, 2013
Share-Based Compensation	'
Share-Based Compensation	'
	Note 11. Share-Based Compensation
	On September 30, 2013, the Company had one share-based compensation plan, the Amended and Restated City National Corporation 2008 Omnibus Plan (the “Plan”), which was originally approved by the Company’s shareholders on April 23, 2008. No new awards have been or will be granted under predecessor plans since the adoption of the Plan. The Plan permits the grant of stock options, restricted stock, restricted stock units, cash-settled restricted stock units, performance shares, performance share units, performance units and stock appreciation rights, or any combination thereof, to the Company’s eligible employees and non-employee directors. No grants of performance shares, performance share units or stock appreciation rights had been made as of September 30, 2013. At September 30, 2013, there were approximately 3.3 million shares available for future grants. Refer to the Company’s Annual Report on Form 10-K for the year ended December 31, 2012 for further discussion of the Company’s share-based compensation plan.
	The compensation cost recognized for all share-based awards was $5.7 million and $16.3 million for the three and nine months ended September 30, 2013, respectively, compared with $4.7 million and $13.7 million for the three and nine months ended September 30, 2012, respectively. The total income tax benefit recognized in the consolidated statements of income for share-based compensation arrangements was $2.4 million and $6.8 million for the three and nine months ended September 30, 2013, respectively, compared with $2.0 million and $5.7 million for the three and nine months ended September 30, 2012, respectively. The Company received $25.0 million and $21.7 million in cash for the exercise of stock options during the nine months ended September 30, 2013 and 2012, respectively. The actual tax benefit realized for the tax deductions from stock option exercises was $4.2 million and $2.0 million for the nine months ended September 30, 2013 and 2012, respectively.
	To estimate the fair value of stock option awards, the Company uses the Black-Scholes methodology, which incorporates the assumptions summarized in the table below:
		For the three months ended				For the nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
	Weighted-average volatility	—		—		28.12	%	30.58	%
	Dividend yield	—		—		2.15	%	2.14	%
	Expected term (in years)	—		—		6.15		6.11
	Risk-free interest rate	—		—		1.24	%	1.44	%
	Using the Black-Scholes methodology, the weighted-average grant-date fair values of options granted during the nine months ended September 30, 2013 and 2012 were $12.57 and $11.64, respectively. The total intrinsic value of options exercised during the nine months ended September 30, 2013 and 2012 was $10.2 million and $7.6 million, respectively.
	A summary of option activity and related information for the nine months ended September 30, 2013 is presented below:
				Weighted						Weighted
				Average			Aggregate			Average
		Number of		Exercise			Intrinsic			Remaining
		Shares		Price			Value			Contractual
	Options	(in thousands)		(per share)			(in thousands) (1)			Term
	Outstanding at January 1, 2013	4,417		$	53.91
	Granted	593		55.73
	Exercised	(587	)	42.53
	Forfeited or expired	(69	)	55.98
	Outstanding at September 30, 2013	4,354		$	55.66		$	54,522		5.7
	Exercisable at September 30, 2013	2,937		$	56.86		$	35,391		4.35
	(1) Includes in-the-money options only.
	A summary of changes in unvested options and related information for the nine months ended September 30, 2013 is presented below:
				Weighted Average
		Number of		Grant Date
		Shares		Fair Value
	Unvested Options	(in thousands)		(per share)
	Unvested at January 1, 2013	1,529		$	13.36
	Granted	593		12.57
	Vested	(682	)	12.25
	Forfeited	(23	)	13.33
	Unvested at September 30, 2013	1,417		$	13.58
	The number of options vested during the nine months ended September 30, 2013 and 2012 was 681,816 and 669,241, respectively. The total fair value of options vested during the nine months ended September 30, 2013 and 2012 was $8.4 million and $8.2 million, respectively. As of September 30, 2013, there was $14.0 million of unrecognized compensation cost related to unvested stock options granted under the Company’s plans. That cost is expected to be recognized over a weighted-average period of 2.4 years.
	A summary of changes in restricted stock and related information for the nine months ended September 30, 2013 is presented below:
				Weighted Average
		Number of		Grant Date
		Shares		Fair Value
	Restricted Stock (1)	(in thousands)		(per share)
	Unvested at January 1, 2013	747		$	50.73
	Granted	70		56.01
	Vested	(198	)	45.91
	Forfeited	(8	)	49.82
	Unvested at September 30, 2013	611		$	52.91
	(1) Includes restricted stock units.
	Restricted stock is valued at the closing price of the Company’s stock on the date of award. The weighted-average grant-date fair value of restricted stock granted during the nine months ended September 30, 2013 and 2012 was $56.01 and $47.04, respectively. The number of restricted shares vested during the nine months ended September 30, 2013 and 2012 was 198,268 and 187,898, respectively. The total fair value of restricted stock vested during the nine months ended September 30, 2013 and 2012 was $9.1 million and $8.7 million, respectively. As of September 30, 2013, the unrecognized compensation cost related to restricted stock granted under the Company’s plans was $18.6 million. That cost is expected to be recognized over a weighted-average period of 2.7 years.
	Cash-settled restricted stock units are initially valued at the closing price of the Company’s stock on the date of award and subsequently remeasured at each reporting date until settlement. A summary of changes in cash-settled restricted stock units for the nine months ended September 30, 2013 is presented below:
		Number of
		Shares
	Cash-Settled Restricted Stock Units	(in thousands)
	Unvested at January 1, 2013	101
	Granted	90
	Forfeited	(2	)
	Unvested at September 30, 2013	189

Derivative_Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2013
Derivative Instruments	'
Derivative Instruments	'
	Note 12. Derivative Instruments
	The following table summarizes the fair value and balance sheet classification of derivative instruments as of September 30, 2013 and December 31, 2012. The notional amount of the contract is not recorded on the consolidated balance sheets, but is used as the basis for determining the amount of interest payments to be exchanged between the counterparties. If a counterparty fails to perform, the Company’s counterparty credit risk is equal to the amount reported as a derivative asset.
	Notional Amounts and Fair Values of Derivative Instruments
		September 30, 2013									December 31, 2012
	(in millions)	Notional			Derivative			Derivative			Notional			Derivative		Derivative
		Amount			Assets			Liabilities			Amount			Assets		Liabilities
	Derivatives designated as hedging instruments
	Interest-rate swaps - fair value (1):
	Long-term and subordinated debt	$	—		$	—		$	—		$	205.5		$	2.3	$	0.1
	Total derivatives designated as hedging instruments	$	—		$	—		$	—		$	205.5		$	2.3	$	0.1
	Derivatives not designated as hedging instruments
	Interest-rate contracts:
	Swaps	$	2,818.40		$	46.8		$	45.8		$	2,243.60		$	64.2	$	64.2
	Interest-rate caps, floors and collars	260.5			1			1			240.1			0.2		0.2
	Options purchased	2			0.5			0.5			2			0.2		0.2
	Options written	2			—			—			2			—		—
	Total interest-rate contracts	$	3,082.90		$	48.3		$	47.3		$	2,487.70		$	64.6	$	64.6
	Option contracts	$	—		$	0.5		$	—		$	—		$	0.7	$	—
	Foreign exchange contracts:
	Spot and forward contracts	$	492.8		$	4.2		$	3.6		$	231.4		$	1.5	$	1.3
	Options purchased	7.8			—			—			—			—		—
	Options written	7.8			0.1			0.1			—			—		—
	Total foreign exchange contracts	$	508.4		$	4.3		$	3.7		$	231.4		$	1.5	$	1.3
	Total derivatives not designated as hedging instruments	$	3,591.30		$	53.1		$	51		$	2,719.10		$	66.8	$	65.9
	(1)    The Company offsets mark-to-market adjustments, interest receivable, interest payable and cash collateral received on interest-rate swaps that are executed with the same counterparty under a master netting agreement, and reports the net balance in other assets or other liabilities in the consolidated balance sheets. For purposes of this disclosure, mark-to-market adjustments, interest receivable and interest payable are presented on a gross basis and cash collateral is excluded from fair value amounts.
	Derivatives Designated as Hedging Instruments
	As of September 30, 2013, the Company had no hedging instruments. As of December 31, 2012, the Company had $205.5 million notional amount of interest-rate swap contracts, all of which were designated as fair value hedges. The net positive fair value of the fair value hedges of $2.3 million was recorded in other assets. It included a mark-to-market asset of $1.1 million and net interest receivable of $1.2 million. The balance of borrowings reported in the consolidated balance sheet included a $1.1 million mark-to-market adjustment associated with interest-rate hedge transactions. There were no cash flow hedges at December 31, 2012.
	The periodic net settlement of interest-rate swaps is recorded as an adjustment to interest income or interest expense. The impact of interest-rate swaps on interest income and interest expense for the three and nine months ended September 30, 2013 and 2012 is provided below:
	(in millions)	Location in Consolidated		For the three months ended						For the nine months ended
	Derivatives Designated as			September 30,						September 30,
	Hedging Instruments	Statements of Income		2013			2012			2013			2012
	Interest-rate swaps-fair value	Interest expense		$	—		$	(2.1	)	$	(1.0	)	$	(6.2	)
	Interest-rate swaps-cash flow	Interest income		—			—			0.1			0.1
	Total income			$	—		$	2.1		$	1.1		$	6.3
	Interest-rate swaps increased net interest income by $1.1 million for the nine months ended September 30, 2013 and $2.1 million and $6.3 million for the three and nine months ended September 30, 2012, respectively. The Company had no interest rate swaps that impacted net interest income during the third quarter of 2013.
	Changes in fair value of the effective portion of cash flow hedges are reported in AOCI. When the cash flows associated with the hedged item are realized, the gain or loss included in AOCI is recognized in Interest income on loans and leases, the same location in the consolidated statements of income as the income on the hedged item. There were no cash flow hedges outstanding during the nine-month periods ended September 30, 2013 and 2012. The $0.1 million of gains on cash flow hedges reclassified from AOCI to interest income for the nine months ended September 30, 2013 and 2012 represents the amortization of deferred gains on cash flow hedges that were terminated in 2010 prior to their respective maturity dates for which the hedge transactions had yet to occur. The balance of deferred gain on terminated swaps was fully amortized in 2013.
	Derivatives Not Designated as Hedging Instruments
	Derivative contracts not designated as hedges are composed primarily of interest rate contracts with clients that are offset by paired trades with unrelated bank counterparties and foreign exchange contracts. Derivative contracts not designated as hedges are carried at fair value each reporting period with changes in fair value recorded as a part of Noninterest income in the consolidated statements of income. The table below provides the amount of gains and losses on these derivative contracts for the three and nine months ended September 30, 2013 and 2012:
	(in millions)	Location in Consolidated		For the three months ended						For the nine months ended
	Derivatives Not Designated as			September 30,						September 30,
	Hedging Instruments	Statements of Income		2013			2012			2013			2012
	Interest-rate contracts	Other noninterest income		$	(0.3	)	$	0.1		$	0.9		$	(0.5	)
	Option contracts	Other noninterest income		(0.1		)	(0.3		)	0.3			(1.0		)
	Foreign exchange contracts	International services income		7.2			6.3			20.4			18.6
	Total income			$	6.8		$	6.1		$	21.6		$	17.1
	Credit Risk Exposure and Collateral
	The Company’s swap agreements require the deposit of cash or marketable debt securities as collateral based on certain risk thresholds. These requirements apply individually to the Corporation and to the Bank. Additionally, certain of the Company’s swap contracts contain security agreements that include credit-risk-related contingent features. Under these agreements, the collateral requirements are based on the Company’s credit rating from the major credit rating agencies. The amount of collateral required may vary by counterparty based on a range of credit ratings that correspond with exposure thresholds established in the derivative agreements. If the credit ratings on the Company’s debt were to fall below the level associated with a particular exposure threshold and the derivatives with a counterparty are in a net liability position that exceeds that threshold, the counterparty could request immediate payment or delivery of collateral for the difference between the net liability amount and the exposure threshold. The aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position on September 30, 2013 was $11.5 million. The Company delivered collateral in the form of securities valued at $1.2 million and cash totaling $10.7 million on swap agreements that had credit-risk contingent features that were in a net liability position at September 30, 2013.
	The Company’s interest-rate swaps had $0.6 million and $1.6 million of credit risk exposure at September 30, 2013 and December 31, 2012, respectively. The credit exposure represents the cost to replace, on a present value basis and at current market rates, all contracts by trading counterparty having an aggregate positive market value, net of margin collateral received. The Company enters into master netting agreements with swap counterparties to mitigate credit risk. Under these agreements, the net amount due from or payable to each counterparty is settled on the contract payment date. No collateral had been received from swap counterparties at September 30, 2013. At December 31, 2012, the Company had received $1.0 million of collateral in the form of securities. The Company delivered collateral valued at $12.4 million on swap agreements that did not have credit-risk contingent features at September 30, 2013.
	See Note 13 for additional information about the Company’s derivative instruments subject to master netting agreements.

Balance_Sheet_Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2013
Balance Sheet Offsetting	'
Balance Sheet Offsetting	'
	Note 13. Balance Sheet Offsetting
	Assets and liabilities relating to certain financial instruments, including derivatives, securities purchased under resale agreements (“reverse repurchase agreements”) and securities sold under repurchase agreements (“repurchase agreements”), may be eligible for offset in the consolidated balance sheet as permitted under accounting guidance. The Company is party to transactions involving derivative instruments that are subject to enforceable master netting arrangements or similar agreements. Under these agreements, the Company may have the right to net settle multiple contracts with the same counterparty. Certain derivative transactions may require the Company to receive or pledge marketable debt securities as collateral based on certain risk thresholds. The Company also enters into reverse repurchase agreements under which it has the right to claim securities collateral if the counterparty fails to perform. Securities that have been pledged by counterparties as collateral are not recorded in the Company’s consolidated balance sheet unless the counterparty defaults. Securities that have been pledged by the Company to counterparties continue to be reported in the Company’s consolidated balance sheet unless the Company defaults.
	The Company also offers various derivative products to clients and enters into derivative transactions in due course. These derivative contracts are offset by paired trades with unrelated bank counterparties. Certain derivative transactions with clients are not subject to master netting arrangements and have been excluded from the balance sheet offsetting table below.
	The following table provides information about financial instruments that are eligible for offset at September 30, 2013 and December 31, 2012:
		Gross		Gross			Net Amount		Gross Amounts
							Presented		Not Offset in the
									Balance Sheet
	(in thousands)	Amount		Amount			in the		Securities			Cash			Net
		Recognized		Offset			Balance Sheet		Collateral			Collateral			Amount
	September 30, 2013
	Financial assets:
	Derivatives not designated as hedging instruments	$	13,196	$	(8,463	)	$	4,733	$	—		$	—		$	4,733
	Reverse repurchase agreements	200,000		—			200,000		(200,000		)	—			—
	Total financial assets	$	213,196	$	(8,463	)	$	204,733	$	(200,000	)	$	—		$	4,733
	Financial liabilities:
	Derivatives not designated as hedging instruments	$	43,332	$	(8,463	)	$	34,869	$	(13,638	)	$	(10,718	)	$	10,513
	Total financial liabilities	$	43,332	$	(8,463	)	$	34,869	$	(13,638	)	$	(10,718	)	$	10,513
	December 31, 2012
	Financial assets:
	Derivatives designated as hedging instruments	$	2,249	$	(83	)	$	2,166	$	(1,034	)	$	—		$	1,132
	Derivatives not designated as hedging instruments	1,920		(1,454		)	466		—			—			466
	Total financial assets	$	4,169	$	(1,537	)	$	2,632	$	(1,034	)	$	—		$	1,598
	Financial liabilities:
	Derivatives designated as hedging instruments	$	83	$	(83	)	$	—	$	—		$	—		$	—
	Derivatives not designated as hedging instruments	65,461		(1,453		)	64,008		(48,697		)	—			15,311
	Total financial liabilities	$	65,544	$	(1,536	)	$	64,008	$	(48,697	)	$	—		$	15,311

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Taxes	'
Income Taxes	'
	Note 14. Income Taxes
	The Company recognized income tax expense of $27.1 million and $73.7 million for the three and nine months ended September 30, 2013, respectively. The Company recognized income tax expense of $29.1 million and $78.0 million for the same periods in 2012.
	The Company recognizes accrued interest and penalties relating to uncertain tax positions as an income tax provision expense. The Company recognized a benefit on interest and penalties of approximately $0.4 million and interest and penalties expense of $0.2 million for the nine months ended September 30, 2013 and 2012, respectively. The Company had approximately $3.0 million and $3.4 million of accrued interest and penalties as of September 30, 2013 and December 31, 2012, respectively.
	The Company and its subsidiaries file a consolidated federal income tax return and also file income tax returns in various state jurisdictions. The Company is currently being audited by the Internal Revenue Service for the tax year 2013. The Company is also under audit with the California Franchise Tax Board for the tax years 2005 to 2007. The financial statement impact resulting from completion of these audits is not expected to be material.
	From time to time, there may be differences in opinion with respect to the tax treatment of certain transactions. If a tax position which was previously recognized on the consolidated financial statements is no longer more likely than not to be sustained upon a challenge from the taxing authorities, the tax benefit from the tax position will be derecognized. The Company did not have any material tax positions for which previously recognized benefits were derecognized during the nine month period ended September 30, 2013.

Employee_Benefit_Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2013
Employee Benefit Plans	'
Employee Benefit Plans	'
	Note 15. Employee Benefit Plans
	Defined Contribution Plan
	The Company has a profit-sharing retirement plan with an Internal Revenue Code Section 401(k) feature covering eligible employees. Employer contributions are made annually into a trust fund and are allocated to participants based on their salaries. The profit sharing contribution requirement is based on a percentage of annual operating income subject to a percentage of salary cap. Eligible employees may contribute up to 50 percent of their salary to the 401(k) plan, but not more than the maximum allowed under Internal Revenue Service (“IRS”) regulations. The Company matches 50 percent of the first 6 percent of covered compensation. The Company recorded total profit sharing and matching contribution expense of $5.5 million and $15.5 million for the three and nine months ended September 30, 2013, respectively. Profit sharing and matching contribution expense was $4.8 million and $14.3 million for the same periods in 2012, respectively.
	Deferred Compensation Plan
	The Company offers a deferred compensation plan for eligible employees and non-employee directors. Participants under the employee plan may make an annual irrevocable election to defer a portion of base salary and up to 100 percent of commission and incentive compensation while employed with the Company. Participants under the non-employee director plan also may make an annual irrevocable election to defer all or part of annual retainers, annual awards, committee chair retainers and meeting fees (collectively, “directors’ fees”) until board service with the Company ceases. The deferred compensation plans are nonqualified plans under IRS regulations. Deferrals are made on a pretax basis and are allocated among the investment options available under the plans as directed by the plan participants. The Company funds plan benefits through the purchase of life insurance policies which are recorded in Other assets on the consolidated balance sheets. Participant deferrals are recorded in Other liabilities on the consolidated balance sheets. Employee salaries and non-employee directors’ fees deferred under the plan are charged to Salaries and employee benefits and Other operating expense, respectively, on the consolidated statements of income. Earnings on plan assets, net of benefits payable to plan participants, are reported in Salaries and employee benefits on the consolidated statements of income, and were $0.2 million and $0.7 million for the three and nine months ended September 30, 2013, respectively. Earnings on plan assets, net of benefits payable to plan participants, were $0.1 million and $0.4 million for the same periods in 2012, respectively.
	Other Plans
	Prior to March 14, 2012, the Company provided a supplemental retirement benefit (also referred to as a “SERP benefit”) to one of its executive officers. On March 14, 2012, the executive’s supplemental retirement benefit agreement was amended to terminate the executive’s right to receive SERP benefits in exchange for fully vested interests in a deferred compensation stock fund. On March 14, 2012, the SERP benefit was terminated and the actuarial present value of the accumulated SERP benefit was calculated as of that date. The present value of the accumulated SERP benefit under the amended agreement at March 14, 2012 was deemed to be invested in the deferred compensation stock fund, with the number of units being determined by the closing price of the Company’s stock on March 14, 2012. The benefit was converted to 167,423 units in the deferred compensation stock fund at March 14, 2012. Distributions to the executive officer from the stock fund will be made solely in Company stock upon termination of employment. As a result of this conversion, the Company reversed its $8.3 million pension liability related to the SERP benefit, recorded the fully vested interests in the deferred compensation stock fund in equity for the same amount, and recognized expense of $1.7 million in the consolidated statements of income in the quarter ended March 31, 2012. The Company recognized total expense related to this SERP of $1.9 million for the nine months ended September 30, 2012 and no expense for the nine months ended September 30, 2013.
	The Company also administers a Supplemental Executive Retirement Plan (“SERP Plan”) covering three former executives of Pacific Bank, which the Company acquired in 2000. As of September 30, 2013, there was an unfunded pension liability for the SERP Plan of $2.3 million. Expense for the three months ended September 30, 2013 and 2012 was nominal. Expense for the nine months ended September 30, 2013 and 2012 was $0.2 million and $0.1 million, respectively.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2013
Contingencies	'
Contingencies	'
	Note 16. Contingencies
	In connection with the liquidation of an investment acquired in a previous bank merger, the Company has an outstanding long-term indemnity. The maximum liability under the indemnity is $23.0 million, but the Company does not expect to make any payments of more than nominal amounts under the terms of this indemnity.

Variable_Interest_Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2013
Variable Interest Entities	'
Variable Interest Entities	'
	Note 17. Variable Interest Entities
	The Company holds ownership interests in certain special-purpose entities formed to provide affordable housing. The Company evaluates its interest in these entities to determine whether they meet the definition of a VIE and whether the Company is required to consolidate these entities. The Company is not the primary beneficiary of the affordable housing VIEs in which it holds interests and is therefore not required to consolidate these entities. The investment in these entities is initially recorded at cost, which approximates the maximum exposure to loss as a result of the Company’s involvement with these unconsolidated entities. Subsequently, the carrying value is amortized over the stream of available tax credits and benefits. The Company expects to recover its investments over time, primarily through realization of federal low-income housing tax credits. The balance of the investments in these entities was $182.1 million and $154.0 million at September 30, 2013 and December 31, 2012, respectively, and is included in Affordable housing investments in the consolidated balance sheets. Unfunded commitments for affordable housing investments were $81.0 million at September 30, 2013. These unfunded commitments are recorded in Other liabilities in the consolidated balance sheets.
	Of the affordable housing investments held as of September 30, 2013, the Company had a significant variable interest in four affordable housing partnerships. These interests were acquired at various times from 1998 to 2001. The Company’s maximum exposure to loss as a result of its involvement with these entities is limited to the $1.4 million aggregate carrying value of these investments at September 30, 2013. There were no unfunded commitments for these affordable housing investments at September 30, 2013.
	The Company also has ownership interests in several private equity and alternative investment funds that are VIEs. The Company is not a primary beneficiary and, therefore, is not required to consolidate these VIEs. The investment in these entities is carried at cost and net of impairments, which approximates the maximum exposure to loss as a result of the Company’s involvement with these entities. The Company expects to recover its investments over time, primarily through the allocation of fund income, gains or losses on the sale of fund assets, dividends or interest income. The balance in these entities was $36.3 million and $36.1 million at September 30, 2013 and December 31, 2012, respectively, and is included in Other assets in the consolidated balance sheets. Income associated with these investments is reported in Other noninterest income in the consolidated statements of income.

Noncontrolling_Interest

Noncontrolling Interest	9 Months Ended
	Sep. 30, 2013
Noncontrolling Interest	'
Noncontrolling Interest	'
	Note 18. Noncontrolling Interest
	In accordance with ASC Topic 810, Consolidation, and EITF Topic D-98, Classification and Measurement of Redeemable Securities (“Topic D-98”), the Company reports noncontrolling interest in its majority-owned affiliates as Redeemable noncontrolling interest in the mezzanine section between liabilities and equity in the consolidated financial statements. Topic D-98 specifies that securities that are redeemable at the option of the holder or outside the control of the issuer are not considered permanent equity and should be classified in the mezzanine section.
	The Corporation holds a majority ownership interest in five investment management and wealth advisory affiliates that it consolidates. In general, the management of each majority-owned affiliate has a significant noncontrolling ownership position in its firm and supervises the day-to-day operations of the affiliate. The Corporation is in regular contact with each affiliate regarding its operations and is an active participant in the management of the affiliates through its position on each firm’s board.
	The Corporation’s investment in each affiliate is governed by operating agreements and other arrangements which provide the Corporation certain rights, benefits and obligations. The Corporation determines the appropriate method of accounting based upon these agreements and the factors contained therein. All majority-owned affiliates that have met the criteria for consolidation are included in the consolidated financial statements. All material intercompany balances and transactions are eliminated. The Company applies the equity method of accounting for certain investments where it holds a noncontrolling interest. For equity method investments, the Company’s portion of income before taxes is included in Trust and investment fees in the consolidated statements of income.
	As of September 30, 2013, affiliate noncontrolling owners held equity interests with an estimated fair value of $39.8 million. This estimate reflects the maximum obligation to purchase equity interests in the affiliates. The events which would require the Company to purchase the equity interests may occur in the near term or over a longer period of time. The terms of the put provisions vary by agreement, but the value of the put is at the approximate fair value of the interests. The parent company carries key man life insurance policies to fund a portion of these conditional purchase obligations in the event of the death of certain key holders.
	The following is a summary of activity for redeemable noncontrolling interest for the nine months ended September 30, 2013 and 2012:
		For the nine months ended
		September 30,
	(in thousands)	2013			2012
	Balance, beginning of period	$	41,112		$	44,643
	Net income	1,657			1,024
	Distributions to redeemable noncontrolling interest	(1,285		)	(1,261		)
	Additions and redemptions, net	(1,625		)	(1,987		)
	Adjustments to fair value	(19		)	(1,033		)
	Balance, end of period	$	39,840		$	41,386

Segment_Results

Segment Results	9 Months Ended
	Sep. 30, 2013
Segment Results	'
Segment Results	'
	Note 19. Segment Results
	The Company has three reportable segments: Commercial and Private Banking, Wealth Management and Other. The factors considered in determining whether individual operating segments could be aggregated include that the operating segments: (i) offer the same products and services, (ii) offer services to the same types of clients, (iii) provide services in the same manner and (iv) operate in the same regulatory environment. The management accounting process measures the performance of the operating segments based on the Company’s management structure and is not necessarily comparable with similar information for other financial services companies. If the management structures and/or the allocation process changes, allocations, transfers and assignments may change.
	The Commercial and Private Banking reportable segment is the aggregation of the Commercial and Private Banking, Real Estate, Entertainment, Corporate Banking, Core Branch Banking and FAEF operating segments. The Commercial and Private Banking segment provides banking products and services, including commercial and mortgage lending, lines of credit, equipment lease financing, deposits, cash management services, international trade finance and letters of credit to small and medium-sized businesses, entrepreneurs and affluent individuals. This segment primarily serves clients in California, New York, Nevada, Tennessee and Georgia. FAEF serves clients nationwide.
	The Wealth Management segment includes the Corporation’s investment advisory affiliates and the Bank’s Wealth Management Services. The asset management affiliates and the Wealth Management division of the Bank make the following investment advisory and wealth management resources and expertise available to individual and institutional clients: investment management, wealth advisory services, brokerage, retirement, estate and financial planning and personal, business, custodial and employee trust services. The Wealth Management segment also advises and makes available mutual funds under the name of City National Rochdale Funds. Both the asset management affiliates and the Bank’s Wealth Management division provide proprietary and nonproprietary products and offer a full spectrum of investment solutions in multiple asset classes and investment styles, including fixed-income instruments, mutual funds, domestic and international equities and alternative investments such as hedge funds. This segment serves clients nationwide.
	The Other segment includes all other subsidiaries of the Company, the corporate departments, including the Treasury Department and the Asset Liability Funding Center, that have not been allocated to the other segments, and inter-segment eliminations for revenue recognized in multiple segments for management reporting purposes. The Company uses traditional matched-maturity funds transfer pricing methodology. However, both positive and negative variances occur over time when transfer pricing non-maturing balance sheet items such as demand deposits. These variances, offset in the Funding Center, are evaluated at least annually by management and allocated back to the business segments as deemed necessary.
	Business segment earnings are the primary measure of the segment’s performance as evaluated by management. Business segment earnings include direct revenue and expenses of the segment as well as corporate and inter-company cost allocations. Allocations of corporate expenses, such as data processing and human resources, are calculated based on estimated activity levels for the fiscal year. Costs associated with intercompany support and services groups, such as Operational Services, are allocated to each business segment based on actual services used. Capital is allocated based on the estimated risk within each business segment. The methodology of allocating capital is based on each business segment’s credit, market, and operational risk profile. If applicable, any provision for credit losses is allocated based on various credit factors, including but not limited to, credit risk ratings, credit rating fluctuation, charge-offs and recoveries and loan growth.
	Effective with second quarter 2013 reporting, the methodology for allocating the provision for income taxes to the segments was revised to base the allocation on the Company’s effective tax rate. The allocation was previously based on the statutory tax rate. Prior period segment results have been revised to reflect this change in methodology.
	Exposure to market risk is managed in the Company’s Treasury department. Interest rate risk is mostly removed from the Commercial and Private Banking segment and transferred to the Funding Center through a fund transfer pricing (“FTP”) methodology and allocation model. The FTP model records a cost of funds or credit for funds using a combination of matched maturity funding for fixed term assets and liabilities and a blended rate for the remaining assets and liabilities with varying maturities.
	The Bank’s investment portfolio and unallocated equity are included in the Other segment. Amortization expense associated with customer-relationship intangibles is charged to the affected operating segments.
	Selected financial information for each segment is presented in the following tables. Commercial and Private Banking includes all revenue and costs from products and services utilized by clients of Commercial and Private Banking, including both revenue and costs for Wealth Management products and services. The revenues and costs associated with Wealth Management products and services that are allocated to Commercial and Private Banking for management reporting purposes are eliminated in the Other segment. The current period reflects any changes made in the process or methodology for allocations to the reportable segments. Prior period segment results have been revised to conform to current period presentation.
		For the three months ended September 30, 2013
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	194,678	$	243	$	19,350		$	214,271
	Provision for losses on covered loans	2,496		—		—			2,496
	Noninterest income	38,601		57,536		(7,254		)	88,883
	Depreciation and amortization	3,263		1,878		4,618			9,759
	Noninterest expense	170,019		48,184		(18,598		)	199,605
	Income before income taxes	57,501		7,717		26,076			91,294
	Provision for income taxes	17,153		2,120		7,779			27,052
	Net income	40,348		5,597		18,297			64,242
	Less: Net income attributable to noncontrolling interest	—		609		—			609
	Net income attributable to City National Corporation	$	40,348	$	4,988	$	18,297		$	63,633
	Selected Average Balances:
	Loans and leases, excluding covered loans	$	15,989,181	$	—	$	50,572		$	16,039,753
	Covered loans	818,928		—		—			818,928
	Total assets	17,014,239		644,677		10,402,218			28,061,134
	Deposits	23,817,083		76,052		408,512			24,301,647
	Goodwill	393,176		249,446		—			642,622
	Customer-relationship intangibles, net	4,445		39,024		—			43,469
		For the three months ended September 30, 2012
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	184,552	$	1,133	$	24,237		$	209,922
	Provision for credit losses on loans and leases, excluding covered loans	2,000		—		—			2,000
	Provision for losses on covered loans	18,089		—		—			18,089
	Noninterest income	59,911		54,405		(7,059		)	107,257
	Depreciation and amortization	3,569		1,996		4,691			10,256
	Noninterest expense	169,652		45,387		(17,409		)	197,630
	Income before income taxes	51,153		8,155		29,896			89,204
	Provision for income taxes	16,730		2,545		9,777			29,052
	Net income	34,423		5,610		20,119			60,152
	Less: Net income attributable to noncontrolling interest	—		372		—			372
	Net income attributable to City National Corporation	$	34,423	$	5,238	$	20,119		$	59,780
	Selected Average Balances:
	Loans and leases, excluding covered loans	$	13,526,284	$	—	$	61,224		$	13,587,508
	Covered loans	1,207,031		—		—			1,207,031
	Total assets	15,098,090		638,445		9,918,059			25,654,594
	Deposits	21,298,105		104,195		538,520			21,940,820
	Goodwill	393,176		239,297		—			632,473
	Customer-relationship intangibles, net	7,392		47,359		—			54,751
		For the nine months ended September 30, 2013
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	563,662	$	805	$	53,796		$	618,263
	Provision for losses on covered loans	461		—		—			461
	Noninterest income	119,418		171,461		(26,259		)	264,620
	Depreciation and amortization	10,505		5,654		13,884			30,043
	Noninterest expense	512,234		143,920		(54,064		)	602,090
	Income before income taxes	159,880		22,692		67,717			250,289
Provision for income taxes	47,414		6,238		20,083			73,735
Net income	112,466		16,454		47,634			176,554
Less: Net income attributable to noncontrolling interest	—		1,657		—			1,657
Net income attributable to City National Corporation	$	112,466	$	14,797	$	47,634		$	174,897
Selected Average Balances:
Loans and leases, excluding covered loans	$	15,378,936	$	—	$	53,303		$	15,432,239
Covered loans	905,411		—		—			905,411
Total assets	16,505,794		647,273		10,594,847			27,747,914
Deposits	22,696,050		100,922		487,093			23,284,065
Goodwill	393,176		249,446		—			642,622
Customer-relationship intangibles, net	5,174		40,197		—			45,371
	For the nine months ended September 30, 2012
	Commercial and		Wealth					Consolidated
(in thousands)	Private Banking		Management		Other			Company
Earnings Summary:
Net interest income	$	541,125	$	2,396	$	83,593		$	627,114
Provision for credit losses on loans and leases, excluding covered loans	3,000		—		—			3,000
Provision for losses on covered loans	38,848		—		—			38,848
Noninterest income	156,884		133,743		(32,902		)	257,725
Depreciation and amortization	10,565		4,980		13,556			29,101
Noninterest expense	506,437		117,650		(50,066		)	574,021
Income before income taxes	139,159		13,509		87,201			239,869
Provision for income taxes	45,469		4,080		28,493			78,042
Net income	93,690		9,429		58,708			161,827
Less: Net income attributable to noncontrolling interest	—		1,024		—			1,024
Net income attributable to City National Corporation	$	93,690	$	8,405	$	58,708		$	160,803
Selected Average Balances:
Loans and leases, excluding covered loans	$	12,994,726	$	—	$	55,797		$	13,050,523
Covered loans	1,328,484		—		—			1,328,484
Total assets	14,656,439		569,047		9,332,544			24,558,030
Deposits	20,469,604		100,038		469,149			21,038,791
Goodwill	362,868		188,197		—			551,065
Customer-relationship intangibles, net	8,173		33,240		—			41,413

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events	'
Subsequent Events	'
	Note 20. Subsequent Events
	On November 7, 2013, the Corporation issued 4 million depositary shares at a price of $25 per depositary share, each representing a 1/40th interest in a share of 6.75 percent fixed-to-floating rate non-cumulative perpetual preferred stock, Series D. Net proceeds after estimated issuance costs were approximately $97 million, and will be used for general corporate purposes.
	On November 5, 2013, the Company transferred approximately $1 billion of debt securities from the available-for-sale category to the held-to-maturity category. The transfer of these securities was accounted for at fair value. The unrealized holding gains and losses at the date of the transfer will continue to be reported as a separate component of AOCI and will be amortized or accreted into interest income over the remaining life of the securities transferred.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Summary of Significant Accounting Policies	'
Organization	'
	Organization
	City National Corporation (the “Corporation”) is the holding company for City National Bank (the “Bank”). The Bank delivers banking, trust and investment services through 77 offices in Southern California, the San Francisco Bay area, Nevada, New York City, Nashville, Tennessee and Atlanta, Georgia. As of September 30, 2013, the Corporation had five consolidated investment advisory affiliates and one unconsolidated subsidiary, Business Bancorp Capital Trust I. Because the Bank comprises substantially all of the business of the Corporation, references to the “Company” mean the Corporation and the Bank together. The Corporation is approved as a financial holding company pursuant to the Gramm-Leach-Bliley Act of 1999.
Consolidation	'
	Consolidation
	The consolidated financial statements of the Company include the accounts of the Corporation, its non-bank subsidiaries, the Bank and the Bank’s wholly owned subsidiaries, after the elimination of all material intercompany transactions. It also includes noncontrolling interest, which is the portion of equity in a subsidiary not attributable to a parent. Redeemable noncontrolling interests are noncontrolling ownership interests that are redeemable at the option of the holder or outside the control of the issuer. The redeemable noncontrolling interests of third parties in the Corporation’s investment advisory affiliates are not considered to be permanent equity and are reflected in the mezzanine section between liabilities and equity in the consolidated balance sheets. Noncontrolling interests’ share of subsidiary earnings is reflected as Net income attributable to noncontrolling interest in the consolidated statements of income.
	The Company’s investment management and wealth advisory affiliates are organized as limited liability companies. The Corporation generally owns a majority position in each affiliate and certain management members of each affiliate own the remaining shares. The Corporation has contractual arrangements with its affiliates whereby a percentage of revenue is allocable to fund affiliate operating expenses (“operating share”) while the remaining portion of revenue (“distributable revenue”) is allocable to the Corporation and the noncontrolling owners. All majority-owned affiliates that meet the prescribed criteria for consolidation are consolidated. The Corporation’s interests in investment management affiliates in which it holds a noncontrolling share are accounted for using the equity method. Additionally, the Company has various interests in variable interest entities (“VIEs”) that are not required to be consolidated. See Note 17 for a more detailed discussion on VIEs.
Use of Estimates	'
	Use of Estimates
	The Company’s accounting and reporting policies conform to generally accepted accounting principles (“GAAP”) and practices in the financial services industry. To prepare the financial statements in conformity with GAAP, management must make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements, and income and expenses during the reporting period. Circumstances and events that differ significantly from those underlying the Company’s estimates and assumptions could cause actual financial results to differ from those estimates. The material estimates included in the financial statements relate to the allowance for loan and lease losses, the reserve for off-balance sheet credit commitments, other real estate owned (“OREO”), valuation of share-based compensation awards, income taxes, goodwill and intangible asset impairment, securities impairment, private equity and alternative investment impairment, valuation of assets and liabilities acquired in business combinations, including contingent consideration liabilities, subsequent valuations of acquired impaired loans, Federal Deposit Insurance Corporation (“FDIC”) indemnification assets, valuation of noncontrolling interest, and the valuation of financial assets and liabilities reported at fair value.
	The Company has applied its critical accounting policies and estimation methods consistently in all periods presented in these financial statements. The Company’s estimates and assumptions are expected to change as changes in market conditions and the Company’s portfolio occur in subsequent periods.
Basis of Presentation	'
	Basis of Presentation
	The Company is on the accrual basis of accounting for income and expenses. The results of operations reflect any adjustments, all of which are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q, and which, in the opinion of management, are necessary for a fair presentation of the results for the periods presented. In accordance with the usual practice of banks, assets and liabilities of individual trust, agency and fiduciary funds have not been included in the financial statements. These unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012.
	The results for the 2013 interim periods are not necessarily indicative of the results expected for the full year. The Company has not made any significant changes in its critical accounting policies or in its estimates and assumptions from those disclosed in its 2012 Annual Report other than the adoption of new accounting pronouncements and other authoritative guidance that became effective for the Company on or after January 1, 2013. Refer to Accounting Pronouncements for discussion of accounting pronouncements adopted in 2013.
	Certain prior period amounts have been reclassified to conform to the current period presentation.

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Measurements	'
Summary of assets and liabilities measured at fair value by level	'
					Fair Value Measurements at Reporting Date Using
	(in thousands)	Balance as of			Quoted Prices in			Significant Other			Significant
		September 30,			Active Markets			Observable			Unobservable
		2013			Level 1			Inputs			Inputs
								Level 2			Level 3
	Measured on a Recurring Basis
	Assets
	Securities available-for-sale:
	U.S. Treasury	$	35,425		$	35,425		$	—		$	—
	Federal agency - Debt	1,002,447			—			1,002,447			—
	Federal agency - MBS	197,173			—			197,173			—
	CMOs - Federal agency	4,742,584			—			4,742,584			—
	CMOs - Non-agency	43,312			—			43,312			—
	State and municipal	475,786			—			429,570			46,216
	Other debt securities	392,356			—			376,984			15,372
	Equity securities and mutual funds	6,047			6,047			—			—
	Trading securities	51,451			48,744			2,707			—
	Derivatives (1)	44,634			4,213			40,421			—
	Total assets at fair value	$	6,991,215		$	94,429		$	6,835,198		$	61,588
	Liabilities
	Derivatives	$	42,584		$	3,577		$	39,007		$	—
	Contingent consideration liability	49,350			—			—			49,350
	FDIC clawback liability	11,279			—			—			11,279
	Other liabilities	919			—			919			—
	Total liabilities at fair value (2)	$	104,132		$	3,577		$	39,926		$	60,629
	Redeemable noncontrolling interest	$	39,840		$	—		$	—		$	39,840
	Measured on a Nonrecurring Basis
	Assets
	Collateral dependent impaired loans (3):
	Commercial (4)	$	15		$	—		$	—		$	15
	Commercial real estate mortgages	1,214			—			—			1,214
	Residential mortgages	1,442			—			—			1,442
	Other real estate owned (5)	16,383			—			—			16,383
	Private equity and alternative investments	919			—			—			919
	Total assets at fair value	$	19,973		$	—		$	—		$	19,973
	(1) Reported in Other assets in the consolidated balance sheets.
	(2) Reported in Other liabilities in the consolidated balance sheets.
	(3) Impaired loans for which fair value was calculated using the collateral valuation method.
	(4) Includes lease financing.
	(5) Includes covered OREO.
					Fair Value Measurements at Reporting Date Using
	(in thousands)	Balance as of			Quoted Prices in			Significant Other			Significant
		December 31,			Active Markets			Observable			Unobservable
		2012			Level 1			Inputs			Inputs
								Level 2			Level 3
	Measured on a Recurring Basis
	Assets
	Securities available-for-sale:
	U.S. Treasury	$	20,397		$	20,397		$	—		$	—
	Federal agency - Debt	2,349,202			—			2,349,202			—
	Federal agency - MBS	693,032			—			693,032			—
	CMOs - Federal agency	5,318,253			—			5,318,253			—
	CMOs - Non-agency	61,513			—			61,513			—
	State and municipal	454,474			—			407,429			47,045
	Other debt securities	307,417			—			289,275			18,142
	Equity securities and mutual funds	1,701			1,701			—			—
	Trading securities	115,059			113,010			2,049			—
	Derivatives (1)	67,496			218			67,278			—
	Total assets at fair value	$	9,388,544		$	135,326		$	9,188,031		$	65,187
	Liabilities
	Derivatives	$	64,432		$	—		$	64,432		$	—
	Contingent consideration liability	47,724			—			—			47,724
	FDIC clawback liability	9,970			—			—			9,970
Other liabilities	368			—			368			—
Total liabilities at fair value (2)	$	122,494		$	—		$	64,800		$	57,694
Redeemable noncontrolling interest	$	41,112		$	—		$	—		$	41,112
Measured on a Nonrecurring Basis
Assets
Collateral dependent impaired loans (3):
Commercial (4)	$	2,655		$	—		$	—		$	2,655
Commercial real estate mortgages	10,963			—			—			10,963
Residential mortgages	1,811			—			—			1,811
Real estate construction	7,918			—			—			7,918
Home equity loans and lines of credit	780			—			—			780
Installment	550			—			—			550
Other real estate owned (5)	44,396			—			—			44,396
Private equity and alternative investments	6,178			—			—			6,178
Total assets at fair value	$	75,251		$	—		$	—		$	75,251
(1) Reported in Other assets in the consolidated balance sheets.
(2) Reported in Other liabilities in the consolidated balance sheets.
(3) Impaired loans for which fair value was calculated using the collateral valuation method.
(4) Includes lease financing.
(5) Includes covered OREO.
Schedule of reconciliation of Level 3 assets measured on a recurring basis	'
	Level 3 Assets and Liabilities Measured on a Recurring Basis
		For the nine months ended									For the nine months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Securities			Contingent			FDIC			Securities			Contingent			FDIC
		Available-for-			Consideration			Clawback			Available-for-			Consideration			Clawback
		Sale			Liability			Liability			Sale			Liability			Liability
	Balance, beginning of period	$	65,187		$	(47,724	)	$	(9,970	)	$	19,583		$	—		$	(8,103	)
	Total realized/unrealized gains (losses):
	Included in earnings	—			—			(1,309		)	—			—			(1,811		)
	Included in other comprehensive income	(35		)	—			—			1,770			—			—
	Additions	—			—			—			—			(45,768		)	—
	Settlements	(3,655		)	—			—			(3,152		)	—			—
	Transfers into Level 3	—			—			—			47,165			—			—
	Other (1)	91			(1,626		)	—			73			(515		)	—
	Balance, end of period	$	61,588		$	(49,350	)	$	(11,279	)	$	65,439		$	(46,283	)	$	(9,914	)
	(1)    Other rollforward activity consists of amortization of premiums and accretion of discounts recognized on the initial purchase of securities available-for-sale and accretion of discount related to the contingent consideration liability.
Information About Nonrecurring Level 3 Fair Value Measurements	'
	Information About Nonrecurring Level 3 Fair Value Measurements
	(in thousands)	Fair Value at			Valuation		Unobservable Inputs
		September 30,			Method
		2013
	Collateral dependent impaired loans	$	2,671		Market		-	Assumptions made in the appraisal process
							-	Adjustments to external or internal appraised values (1)
							-	Probability weighting of broker price opinions
							-	Management assumptions regarding market trends or
								other relevant factors
	Other real estate owned	$	16,383		Market		-	Assumptions made in the appraisal process
							-	Adjustments to external or internal appraised values (1)
							-	Probability weighting of broker price opinions
							-	Management assumptions regarding market trends or
								other relevant factors
	Private equity and alternative investments	$	919		Cost Recovery		-	Management’s assumptions regarding recoverability of
								investment based on fund financial performance, market
								conditions and other relevant factors
	(1)       Appraised values may be adjusted to reflect changes in market conditions that have occurred subsequent to the appraisal date, or for revised estimates regarding the timing or cost of the property sale. These adjustments are based on qualitative judgments made by management on a case-by-case basis.
Schedule of total (losses) gains for assets measured at fair value on a nonrecurring basis	'
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Collateral dependent impaired loans:
	Commercial	$	—		$	—		$	—		$	(368	)
	Commercial real estate mortgages	(934		)	306			(641		)	(1,630		)
	Residential mortgages	(2		)	(31		)	(224		)	(1,152		)
	Real estate construction	—			130			—			(6,623		)
	Home equity loans and lines of credit	—			16			116			(47		)
	Installment	—			(101		)	(138		)	(208		)
	Other real estate owned (1)	(364		)	(4,147		)	(5,075		)	(16,312		)
	Private equity and alternative investments	(109		)	(2,477		)	(508		)	(2,938		)
	Total net losses recognized	$	(1,409	)	$	(6,304	)	$	(6,470	)	$	(29,278	)
	(1)         Net losses on OREO includes $0.4 million and $5.0 million of net losses related to covered OREO for the three and nine months ended September 30, 2013, respectively, and $3.6 million and $14.7 million of net losses related to covered OREO for the three and nine months ended September 30, 2012. A significant portion of net losses on covered OREO is reimbursable by the FDIC.
Schedule of carrying amounts and fair values of financial instruments	'
		September 30, 2013
		Carrying			Total			Fair Value Measurements Using
	(in millions)	Amount			Fair Value			Level 1			Level 2			Level 3
	Financial Assets:
	Cash and due from banks	$	301.1		$	301.1		$	301.1		$	—		$	—
	Due from banks - interest bearing	1,045.60			1,045.60			1,045.60			—			—
	Securities purchased under resale agreements	200			197			—			197			—
	Securities held-to-maturity	1,649.50			1,608.10			—			1,608.10			—
	Loans and leases, net of allowance	16,270.20			16,719.80			—			—			16,719.80
	Covered loans, net of allowance	754.2			802.5			—			—			802.5
	FDIC indemnification asset	101.1			84.3			—			—			84.3
	Investment in FHLB and FRB stock	71.8			71.8			—			71.8			—
	Financial Liabilities:
	Deposits	$	25,236.90		$	25,240.00		$	—		$	24,503.00		$	737
	Other short-term borrowings	2.6			2.6			—			—			2.6
	Long-term debt	719.3			778.2			—			693.6			84.6
		December 31, 2012
		Carrying			Total			Fair Value Measurements Using
	(in millions)	Amount			Fair Value			Level 1			Level 2			Level 3
	Financial Assets:
	Cash and due from banks	$	152		$	152		$	152		$	—		$	—
	Due from banks - interest bearing	246.3			246.3			246.3			—			—
	Federal funds sold	17.1			17.1			17.1			—			—
	Securities held-to-maturity	1,398.40			1,446.60			—			1,446.60			—
	Loans and leases, net of allowance	14,540.40			14,988.60			—			—			14,988.60
	Covered loans, net of allowance	986.2			1,055.00			—			—			1,055.00
	FDIC indemnification asset	150			123.9			—			—			123.9
	Investment in FHLB and FRB stock	90			90			—			90			—
	Financial Liabilities:
	Deposits	$	23,502.40		$	23,506.90		$	—		$	22,734.50		$	772.4
	Federal funds purchased and securities sold under repurchase agreements	1,214.20			1,214.20			1,214.20			—			—
	Other short-term borrowings	209.6			210.7						207.6			3.1
	Long-term debt	706.1			774.8			—			698.9			75.9

Securities_Tables

Securities (Tables)	9 Months Ended
	Sep. 30, 2013
Securities	'
Summary of amortized cost and estimated fair value for the major categories of securities available-for-sale and held-to-maturity	'
					Gross			Gross
		Amortized			Unrealized			Unrealized
	(in thousands)	Cost			Gains			Losses			Fair Value
	September 30, 2013
	Securities available-for-sale:
	U.S. Treasury	$	35,400		$	25		$	—		$	35,425
	Federal agency - Debt	1,007,019			1,078			(5,650		)	1,002,447
	Federal agency - MBS	192,345			7,054			(2,226		)	197,173
	CMOs - Federal agency	4,773,336			40,818			(71,570		)	4,742,584
	CMOs - Non-agency	44,484			213			(1,385		)	43,312
	State and municipal	466,633			10,490			(1,337		)	475,786
	Other debt securities	393,377			5,220			(6,241		)	392,356
	Total debt securities	6,912,594			64,898			(88,409		)	6,889,083
	Equity securities and mutual funds	337			5,710			—			6,047
	Total securities available-for-sale	$	6,912,931		$	70,608		$	(88,409	)	$	6,895,130
	Securities held-to-maturity (1):
	Federal agency - Debt	$	140,020		$	182		$	(4,305	)	$	135,897
	Federal agency - MBS	359,952			1,187			(9,753		)	351,386
	CMOs - Federal agency	849,600			3,567			(18,158		)	835,009
	State and municipal	299,948			660			(14,826		)	285,782
	Total securities held-to-maturity	$	1,649,520		$	5,596		$	(47,042	)	$	1,608,074
	December 31, 2012
	Securities available-for-sale:
	U.S. Treasury	$	20,393		$	7		$	(3	)	$	20,397
	Federal agency - Debt	2,344,374			5,031			(203		)	2,349,202
	Federal agency - MBS	653,428			39,673			(69		)	693,032
	CMOs - Federal agency	5,233,126			91,165			(6,038		)	5,318,253
	CMOs - Non-agency	62,975			662			(2,124		)	61,513
	State and municipal	437,266			17,447			(239		)	454,474
	Other debt securities	305,340			7,945			(5,868		)	307,417
	Total debt securities	9,056,902			161,930			(14,544		)	9,204,288
	Equity securities and mutual funds	336			1,365			—			1,701
	Total securities available-for-sale	$	9,057,238		$	163,295		$	(14,544	)	$	9,205,989
	Securities held-to-maturity (1):
	Federal agency - Debt	$	97,183		$	4,032		$	—		$	101,215
	Federal agency - MBS	303,642			11,490			(182		)	314,950
	CMOs - Federal agency	745,980			28,973			(382		)	774,571
	State and municipal	251,598			5,122			(857		)	255,863
	Total securities held-to-maturity	$	1,398,403		$	49,617		$	(1,421	)	$	1,446,599
	(1) Securities held-to-maturity are presented in the consolidated balance sheets at amortized cost.
Schedule of gross realized gains and losses on sales and calls of securities (including trading securities) available-for-sale	'
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Gross realized gains	$	17,533		$	1,315		$	24,369		$	1,851
	Gross realized losses	(11,745		)	(459		)	(11,745		)	(825		)
	Net realized gains	$	5,788		$	856		$	12,624		$	1,026
Schedule of remaining maturities of debt securities included in the securities portfolio	'
	(in thousands)	One year or			Over 1 year			Over 5 years			Over 10			Total
		less			through			through			years
					5 years			10 years
	Securities available-for-sale:
	U.S. Treasury	$	12,078		$	23,347		$	—		$	—		$	35,425
	Federal agency - Debt	317,377			625,652			59,418			—			1,002,447
	Federal agency - MBS	—			68,967			128,206			—			197,173
	CMOs - Federal agency	128,236			3,706,036			908,312			—			4,742,584
	CMOs - Non-agency	111			9,218			33,983			—			43,312
	State and municipal	39,865			355,575			72,650			7,696			475,786
	Other	12,726			292,812			86,818			—			392,356
	Total debt securities available-for-sale	$	510,393		$	5,081,607		$	1,289,387		$	7,696		$	6,889,083
	Amortized cost	$	507,840		$	5,082,693		$	1,314,292		$	7,769		$	6,912,594
	Securities held-to-maturity:
	Federal agency - Debt	$	—		$	7,000		$	60,022		$	72,998		$	140,020
	Federal agency - MBS	—			14,646			340,827			4,479			359,952
	CMOs - Federal agency	—			181,723			667,877			—			849,600
	State and municipal	659			8,749			142,020			148,520			299,948
	Total debt securities held-to-maturity at amortized cost	$	659		$	212,118		$	1,210,746		$	225,997		$	1,649,520
Schedule of roll forward of credit-related other-than-temporary impairment recognized in earnings for debt securities	'
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Balance, beginning of period	$	3,654		$	17,366		$	16,486		$	17,531
	Subsequent credit-related impairment	144			39			326			217
	Reduction for securities sold or redeemed	—			(537		)	(12,761		)	(537		)
	Reduction for increase in expected cash flows on securities for which OTTI was previously recognized	(421		)	(267		)	(674		)	(610		)
	Balance, end of period	$	3,377		$	16,601		$	3,377		$	16,601
Summary of the gross unrealized losses and fair value of investment securities that are in an unrealized loss position aggregated by investment category and length of time	'
		Less than 12 months						12 months or greater						Total
	(in thousands)	Fair Value			Estimated			Fair Value			Estimated			Fair Value		Estimated
					Unrealized						Unrealized					Unrealized
					Loss						Loss					Loss
	September 30, 2013
	Securities available-for-sale:
	Federal agency - Debt	$	611,954		$	5,650		$	—		$	—		$	611,954	$	5,650
	Federal agency - MBS (1)	45,176			2,226			45			—			45,221		2,226
	CMOs - Federal agency	2,774,796			69,757			96,544			1,813			2,871,340		71,570
	CMOs - Non-agency	14,620			517			8,432			868			23,052		1,385
	State and municipal	90,545			328			46,216			1,009			136,761		1,337
	Other debt securities	118,698			1,231			15,372			5,010			134,070		6,241
	Total securities available-for-sale	$	3,655,789		$	79,709		$	166,609		$	8,700		$	3,822,398	$	88,409
	Securities held-to-maturity:
	Federal agency - Debt	$	128,715		$	4,305		$	—		$	—		$	128,715	$	4,305
	Federal agency - MBS	231,160			9,753			—			—			231,160		9,753
	CMOs - Federal agency	583,595			18,158			—			—			583,595		18,158
	State and municipal	229,562			14,826			—			—			229,562		14,826
	Total securities held-to-maturity	$	1,173,032		$	47,042		$	—		$	—		$	1,173,032	$	47,042
	(1)    The estimated gross unrealized loss for federal agency MBS securities in a continuous unrealized loss position of 12 months or greater was an insignificant amount as of September 30, 2013.
		Less than 12 months						12 months or greater						Total
	(in thousands)	Fair Value			Estimated			Fair Value			Estimated			Fair Value		Estimated
					Unrealized						Unrealized					Unrealized
					Loss						Loss					Loss
	December 31, 2012
	Securities available-for-sale:
	U.S. Treasury	$	5,096		$	3		$	—		$	—		$	5,096	$	3
	Federal agency - Debt	346,136			203			—			—			346,136		203
	Federal agency - MBS (1)	50,932			69			46			—			50,978		69
	CMOs - Federal agency	1,413,367			5,994			13,565			44			1,426,932		6,038
	CMOs - Non-agency	—			—			25,484			2,124			25,484		2,124
	State and municipal	85,550			225			810			14			86,360		239
	Other debt securities	39,877			49			16,038			5,819			55,915		5,868
	Total securities available-for-sale	$	1,940,958		$	6,543		$	55,943		$	8,001		$	1,996,901	$	14,544
	Securities held-to-maturity:
	Federal agency - MBS	$	31,514		$	182		$	—		$	—		$	31,514	$	182
	CMOs - Federal agency	60,998			382			—			—			60,998		382
	State and municipal	64,344			857			—			—			64,344		857
	Total securities held-to-maturity	$	156,856		$	1,421		$	—		$	—		$	156,856	$	1,421
	(1)    The estimated gross unrealized loss for federal agency MBS securities in a continuous unrealized loss position of 12 months or greater was an insignificant amount as of December 31, 2012.

Other_Investments_Tables

Other Investments (Tables)	9 Months Ended
	Sep. 30, 2013
Other Investments	'
Summary of investments by fund type	'
	(in thousands)	September 30,		December 31,
	Fund Type	2013		2012
	Private equity and venture capital	$	20,862	$	20,693
	Real estate	8,108		9,223
	Hedge	2,733		2,866
	Other	4,567		3,309
	Total	$	36,270	$	36,091
Schedule of private equity and alternative investments measured at fair value on a nonrecurring basis	'
	(in thousands)	Fair		Unfunded		Redemption	Redemption
	Fund Type	Value		Commitments		Frequency	Notice Period
	Private equity and venture capital (1)	$	919	$	179	None (2)	N/A
	(1)    Funds invest in securities and other instruments of public and private companies, including corporations, partnerships, limited liability companies and joint ventures.
	(2)    Funds make periodic distributions of income but do not permit redemptions prior to the end of the investment term.

Loans_Allowance_for_Loan_and_L1

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Tables)	9 Months Ended
	Sep. 30, 2013
Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments	'
Summary of loans	'
	Loans and Leases
		September 30,			December 31,
	(in thousands)	2013			2012
	Commercial	$	7,126,158		$	6,211,353
	Commercial real estate mortgages	3,077,183			2,739,284
	Residential mortgages	4,418,231			3,962,205
	Real estate construction	380,489			313,190
	Home equity loans and lines of credit	681,879			711,750
	Installment	152,107			142,793
	Lease financing	730,086			737,720
	Loans and leases, excluding covered loans	16,566,133			14,818,295
	Less: Allowance for loan and lease losses	(295,947		)	(277,888		)
	Loans and leases, excluding covered loans, net	16,270,186			14,540,407
	Covered loans	780,072			1,031,004
	Less: Allowance for loan losses	(25,882		)	(44,781		)
	Covered loans, net	754,190			986,223
	Total loans and leases.	$	17,346,205		$	15,849,299
	Total loans and leases, net	$	17,024,376		$	15,526,630
Summary of major categories of covered loans	'
		September 30,			December 31,
	(in thousands)	2013			2012
	Commercial	$	10,015		$	10,561
	Commercial real estate mortgages	719,207			931,758
	Residential mortgages	5,030			5,652
	Real estate construction	41,625			78,554
	Home equity loans and lines of credit	3,672			3,790
	Installment	523			689
	Covered loans	780,072			1,031,004
	Less: Allowance for loan losses	(25,882		)	(44,781		)
	Covered loans, net	$	754,190		$	986,223
Schedule of information on covered loans and loss-sharing terms by acquired entity	'
	(in thousands)	Imperial			1st Pacific			Sun West			Nevada			Total
		Capital			Bank			Bank			Commerce
		Bank									Bank
	Carrying value of covered loans as of:
	September 30, 2013	$	680,427		$	45,123		$	25,948		$	28,574		$	780,072
	December 31, 2012	$	893,031		$	70,240		$	34,803		$	32,930		$	1,031,004
	Expiration date of FDIC loss sharing:
	Commercial (1)	12/31/16			6/30/15			6/30/15			6/30/16
	Residential	12/31/19			5/30/20			5/30/20			4/30/21
	Termination date of FDIC loss-sharing agreements:
	Commercial (1)	12/19/17			5/8/18			5/29/18			6/30/19
	Residential	12/31/19			5/30/20			5/30/20			4/30/21
	(1)    The Company is subject to sharing 80% of its recoveries with the FDIC up to the termination dates of the commercial loss-sharing agreements.
Summary of accretable yield for acquired impaired loans	'
		For the nine months ended
		September 30,
	(in thousands)	2013			2012
	Balance, beginning of period	$	295,813		$	436,374
	Accretion	(48,424		)	(62,189		)
	Reclassifications from (to) nonaccretable yield	26,990			(4,042		)
	Disposals and other	(41,930		)	(51,854		)
	Balance, end of period	$	232,449		$	318,289
Summary of allowance for loan and lease losses on non-covered loans	'
	(in thousands)	Commercial			Commercial			Residential			Real Estate			Home Equity			Installment			Unallocated			Total
		-1			Real Estate			Mortgages			Construction			Loans and
					Mortgages									Lines of Credit
	Three months ended September 30, 2013
	Allowance for loan and lease losses:
	Beginning balance	$	116,619		$	53,339		$	8,004		$	8,335		$	5,400		$	1,355		$	96,862		$	289,914
	Provision (reduction) for credit losses (2)	(14,173		)	(2,829		)	5,070			(1,589		)	3,092			317			9,363			(749		)
	Charge-offs	(488		)	(1,270		)	—			—			(225		)	(18		)	—			(2,001		)
	Recoveries	4,863			686			40			2,945			31			218			—			8,783
	Net recoveries (charge-offs)	4,375			(584		)	40			2,945			(194		)	200			—			6,782
	Ending balance	$	106,821		$	49,926		$	13,114		$	9,691		$	8,298		$	1,872		$	106,225		$	295,947
	Nine months ended September 30, 2013
	Allowance for loan and lease losses:
	Beginning balance	$	104,731		$	48,901		$	10,558		$	11,784		$	7,283		$	1,858		$	92,773		$	277,888
	Provision (reduction) for credit losses (2)	(7,313		)	572			2,547			(10,386		)	946			(854		)	13,452			(1,036		)
	Charge-offs	(4,719		)	(1,315		)	(106		)	(100		)	(500		)	(370		)	—			(7,110		)
	Recoveries	14,122			1,768			115			8,393			569			1,238			—			26,205
	Net recoveries (charge-offs)	9,403			453			9			8,293			69			868			—			19,095
	Ending balance	$	106,821		$	49,926		$	13,114		$	9,691		$	8,298		$	1,872		$	106,225		$	295,947
	Ending balance of allowance:
	Individually evaluated for impairment	$	344		$	602		$	232		$	—		$	—		$	—		$	—		$	1,178
	Collectively evaluated for impairment	106,477			49,324			12,882			9,691			8,298			1,872			106,225			294,769
	Loans and leases, excluding covered loans
	Ending balance of loans and leases:
	Loans and leases, excluding covered loans	$	7,856,244		$	3,077,183		$	4,418,231		$	380,489		$	681,879		$	152,107		$	—		$	16,566,133
	Individually evaluated for impairment	32,727			38,546			6,767			30,190			2,350			—			—			110,580
	Collectively evaluated for impairment	7,823,517			3,038,637			4,411,464			350,299			679,529			152,107			—			16,455,553
	(1)             Includes lease financing loans.
	(2)             Provision for credit losses in the allowance rollforward for the three months ended September 30, 2013 includes total transfers to the reserve for off-balance sheet credit commitments of $0.7 million. Provision for credit losses in the allowance rollforward for the nine months ended September 30, 2013 includes total transfers to the reserve for off-balance sheet credit commitments of $1.0 million. There was no other provision for credit losses recognized for the three and nine months ended September 30, 2013.
	(in thousands)	Commercial			Commercial			Residential			Real Estate			Home Equity			Installment			Unallocated			Total
		-1			Real Estate			Mortgages			Construction			Loans and
					Mortgages									Lines of Credit
	Three months ended September 30, 2012
	Allowance for loan and lease losses:
	Beginning balance	$	93,981		$	49,715		$	12,490		$	14,810		$	7,656		$	1,774		$	89,108		$	269,534
	Provision (reduction) for credit losses (2)	6,333			(1,298		)	1,327			(3,898		)	47			(314		)	(1,106		)	1,091
	Charge-offs	(12,163		)	(444		)	(1,030		)	(310		)	(43		)	(134		)	—			(14,124		)
	Recoveries	7,227			203			495			3,415			11			588			—			11,939
	Net (charge-offs) recoveries	(4,936		)	(241		)	(535		)	3,105			(32		)	454			—			(2,185		)
	Ending balance	$	95,378		$	48,176		$	13,282		$	14,017		$	7,671		$	1,914		$	88,002		$	268,440
	Nine months ended September 30, 2012
	Allowance for loan and lease losses:
	Beginning balance	$	83,514		$	48,451		$	14,122		$	20,155		$	8,077		$	1,972		$	86,266		$	262,557
	Provision (reduction) for credit losses (2)	3,425			(481		)	732			(4,508		)	588			(655		)	1,736			837
	Charge-offs	(22,382		)	(1,318		)	(2,333		)	(9,769		)	(1,077		)	(959		)	—			(37,838		)
	Recoveries	30,821			1,524			761			8,139			83			1,556			—			42,884
	Net (charge-offs) recoveries	8,439			206			(1,572		)	(1,630		)	(994		)	597			—			5,046
	Ending balance	$	95,378		$	48,176		$	13,282		$	14,017		$	7,671		$	1,914		$	88,002		$	268,440
	Ending balance of allowance:
	Individually evaluated for impairment	$	1,167		$	1,874		$	185		$	1,467		$	138		$	—		$	—		$	4,831
	Collectively evaluated for impairment	94,211			46,302			13,097			12,550			7,533			1,914			88,002			263,609
	Loans and leases, excluding covered loans
	Ending balance of loans and leases:
	Loans and leases, excluding covered loans	$	6,264,562		$	2,436,218		$	3,897,690		$	269,583		$	718,966		$	137,632		$	—		$	13,724,651
	Individually evaluated for impairment	34,731			58,217			11,342			56,582			4,496			449			—			165,817
	Collectively evaluated for impairment	6,229,831			2,378,001			3,886,348			213,001			714,470			137,183			—			13,558,834
	(1)             Includes lease financing loans.
	(2)             Provision for credit losses in the allowance rollforward for the three months ended September 30, 2012 includes total provision expense of $2.0 million, net of total transfers to the reserve for off-balance sheet credit commitments of $0.9 million. Provision for credit losses for the nine months ended September 30, 2012 includes total provision expense of $3.0 million, net of total transfers to the reserve for off-balance sheet credit commitments of $2.2 million.
Summary of activity in the reserve for off-balance sheet credit commitments	'
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Balance, beginning of period	$	25,124		$	24,351		$	24,837		$	23,097
	Transfers from allowance for loan and lease losses	749			909			1,036			2,163
	Balance, end of period	$	25,873		$	25,260		$	25,873		$	25,260
Schedule of impaired loans, excluding covered loans	'
											For the three months ended						For the nine months ended
					Unpaid						September 30, 2013						September 30, 2013
					Contractual						Average			Interest			Average			Interest
		Recorded			Principal			Related			Recorded			Income			Recorded			Income
	(in thousands)	Investment			Balance			Allowance			Investment			Recognized			Investment			Recognized
	September 30, 2013
	With no related allowance recorded:
	Commercial	$	25,233		$	25,488		$	—		$	26,255		$	593		$	22,584		$	1,440
	Commercial real estate mortgages	33,133			37,754			—			29,977			440			33,060			1,102
	Residential mortgages:
	Fixed	2,031			2,155			—			2,019			33			2,860			75
	Variable	3,062			3,418			—			3,670			47			4,062			116
	Total residential mortgages	5,093			5,573			—			5,689			80			6,922			191
	Real estate construction:
	Construction	16,259			21,064			—			16,262			233			17,904			791
	Land	13,931			27,092			—			14,056			224			16,506			511
	Total real estate construction	30,190			48,156			—			30,318			457			34,410			1,302
	Home equity loans and lines of credit	2,350			3,375			—			2,803			47			2,827			81
	Installment:
	Consumer	—			—			—			—			—			112			—
	Total installment	—			—			—			—			—			112			—
	Total with no related allowance	$	95,999		$	120,346		$	—		$	95,042		$	1,617		$	99,915		$	4,116
	With an allowance recorded:
	Commercial	$	7,494		$	9,168		$	344		$	7,567		$	156		$	7,556		$	513
	Commercial real estate mortgages	5,413			5,810			602			10,262			45			11,018			361
	Residential mortgages:
	Fixed	—			—			—			—			—			116			—
	Variable	1,674			1,688			232			1,684			14			842			55
	Total residential mortgages	1,674			1,688			232			1,684			14			958			55
	Real estate construction:
	Land	—			—			—			—			—			3,213			213
	Total real estate construction	—			—			—			—			—			3,213			213
	Home equity loans and lines of credit	—			—			—			—			—			225			—
	Total with an allowance	$	14,581		$	16,666		$	1,178		$	19,513		$	215		$	22,970		$	1,142
	Total impaired loans by type:
	Commercial	$	32,727		$	34,656		$	344		$	33,822		$	749		$	30,140		$	1,953
	Commercial real estate mortgages	38,546			43,564			602			40,239			485			44,078			1,463
	Residential mortgages	6,767			7,261			232			7,373			94			7,880			246
	Real estate construction	30,190			48,156			—			30,318			457			37,623			1,515
	Home equity loans and lines of credit	2,350			3,375			—			2,803			47			3,052			81
	Installment	—			—			—			—			—			112			—
	Total impaired loans	$	110,580		$	137,012		$	1,178		$	114,555		$	1,832		$	122,885		$	5,258
	(in thousands)	Recorded			Unpaid			Related
		Investment			Contractual			Allowance
					Principal
					Balance
	December 31, 2012
	With no related allowance recorded:
	Commercial	$	18,761		$	24,135		$	—
	Commercial real estate mortgages	42,882			49,110			—
	Residential mortgages:
	Fixed	3,482			3,757			—
	Variable	4,865			5,437			—
	Total residential mortgages	8,347			9,194			—
	Real estate construction:
	Construction	19,762			33,267			—
	Land	25,748			41,016			—
	Total real estate construction	45,510			74,283			—
	Home equity loans and lines of credit	3,562			4,660			—
	Installment:
	Consumer	449			927			—
	Total installment	449			927			—
	Total with no related allowance	$	119,511		$	162,309		$	—
With an allowance recorded:
Commercial	$	7,516		$	8,038		$	952
Commercial real estate mortgages	10,203			10,783			1,326
Residential mortgages:
Fixed	463			507			9
Total residential mortgages	463			507			9
Home equity loans and lines of credit	899			965			116
Total with an allowance	$	19,081		$	20,293		$	2,403
Total impaired loans by type:
Commercial	$	26,277		$	32,173		$	952
Commercial real estate mortgages	53,085			59,893			1,326
Residential mortgages	8,810			9,701			9
Real estate construction	45,510			74,283			—
Home equity loans and lines of credit	4,461			5,625			116
Installment	449			927			—
Total impaired loans	$	138,592		$	182,602		$	2,403
										For the three months ended						For the nine months ended
				Unpaid						September 30, 2012						September 30, 2012
				Contractual						Average			Interest			Average			Interest
	Recorded			Principal			Related			Recorded			Income			Recorded			Income
(in thousands)	Investment			Balance			Allowance			Investment			Recognized			Investment			Recognized
September 30, 2012
With no related allowance recorded:
Commercial	$	28,575		$	39,624		$	—		$	30,476		$	—		$	24,732		$	—
Commercial real estate mortgages	40,825			46,081			—			34,597			34			25,767			158
Residential mortgages:
Fixed	4,199			4,613			—			3,014			—			3,047			—
Variable	3,528			3,968			—			4,893			9			5,010			48
Total residential mortgages	7,727			8,581			—			7,907			9			8,057			48
Real estate construction:
Construction	29,446			42,870			—			34,137			245			29,189			487
Land	19,038			23,606			—			18,987			35			22,763			35
Total real estate construction	48,484			66,476			—			53,124			280			51,952			522
Home equity loans and lines of credit	3,297			4,370			—			3,252			—			4,470			—
Installment:																			—
Consumer	449			927			—			500			—			552			—
Total installment	449			927			—			500			—			552			—
Lease financing	—			—			—			—			—			7			—
Total with no related allowance	$	129,357		$	166,059		$	—		$	129,856		$	323		$	115,537		$	728
With an allowance recorded:
Commercial	$	6,156		$	6,922		$	1,167		$	8,461		$	—		$	11,286		$	—
Commercial real estate mortgages	17,392			18,962			1,874			17,257			—			13,406			—
Residential mortgages:
Fixed	2,229			2,336			181			2,260			—			1,844			—
Variable	1,386			1,476			4			2,321			4			1,879			4
Total residential mortgages	3,615			3,812			185			4,581			4			3,723			4
Real estate construction:
Land	8,098			18,362			1,467			8,432			—			14,700			—
Total real estate construction	8,098			18,362			1,467			8,432			—			14,700			—
Home equity loans and lines of credit	1,199			1,406			138			1,213			—			1,166			—
Total with an allowance	$	36,460		$	49,464		$	4,831		$	39,944		$	4		$	44,281		$	4
Total impaired loans by type:
Commercial	$	34,731		$	46,546		$	1,167		$	38,937		$	—		$	36,018		$	—
Commercial real estate mortgages	58,217			65,043			1,874			51,854			34			39,173			158
Residential mortgages	11,342			12,393			185			12,488			13			11,780			52
Real estate construction	56,582			84,838			1,467			61,556			280			66,652			522
Home equity loans and lines of credit	4,496			5,776			138			4,465			—			5,636			—
Installment	449			927			—			500			—			552			—
Lease financing	—			—			—			—			—			7			—
Total impaired loans	$	165,817		$	215,523		$	4,831		$	169,800		$	327		$	159,818		$	732
Schedule of troubled debt restructured loans	'
	The following table provides a summary of loans modified in a troubled debt restructuring during the three months ended September 30, 2013 and 2012:
	(in thousands)	Number of		Pre-Modification			Period-End			Financial
		Contracts		Outstanding			Outstanding			Effects (1)
				Principal			Principal
	Three months ended September 30, 2013
	Commercial	2		$	7,575		$	7,486		$	344
	Total troubled debt restructured loans	2		$	7,575		$	7,486		$	344
	Three months ended September 30, 2012
	Commercial	6		$	1,624		$	1,538		$	10,528
	Residential mortgages:
	Fixed	3		1,578			1,078			485
	Real estate construction:
	Land	1		8,420			8,098			264
	Home equity loans and lines of credit	1		257			149			—
	Total troubled debt restructured loans	11		$	11,879		$	10,863		$	11,277
	(1) Financial effects are comprised of charge-offs and specific reserves recognized on TDR loans at modification date.
	The following table provides a summary of loans modified in a troubled debt restructuring during the nine months ended September 30, 2013 and 2012:
	(in thousands)	Number of		Pre-Modification			Period-End			Financial
		Contracts		Outstanding			Outstanding			Effects (1)
				Principal			Principal
	Nine months ended September 30, 2013
	Commercial	12		$	16,258		$	13,624		$	344
	Commercial real estate mortgages	1		547			533			—
	Home equity loans and lines of credit	1		345			—			—
	Total troubled debt restructured loans	14		$	17,150		$	14,157		$	344
	Nine months ended September 30, 2012
	Commercial	15		$	36,785		$	23,219		$	10,528
	Commercial real estate mortgages	2		15,832			16,353			—
	Residential mortgages:
	Fixed	4		2,233			1,078			485
	Real estate construction:
	Construction	3		14,857			14,226			—
	Land	1		8,420			8,098			264
	Total real estate construction	4		23,277			22,324			264
	Home equity loans and lines of credit	1		257			149			—
	Total troubled debt restructured loans	26		$	78,384		$	63,123		$	11,277
	(1) Financial effects are comprised of charge-offs and specific reserves recognized on TDR loans at modification date.
Schedule of troubled debt restructured loans that have subsequently defaulted	'
		For three months ended September 30, 2013								For nine months ended September 30, 2013
	(in thousands)	Number of		Period-End			Period-End			Number of		Period-End			Period-End
		Contracts		Outstanding			Specific			Contracts		Outstanding			Specific
				Principal			Reserve					Principal			Reserve
	Commercial	—		$	—		$	—		4		$	896		$	—
	Real estate construction:
	Land	—		—			—			1		7,244			—
	Home equity loans and lines of credit	—		—			—			1		139			—
	Total loans that subsequently defaulted	—		$	—		$	—		6		$	8,279		$	—
		For three months ended September 30, 2012								For nine months ended September 30, 2012
	(in thousands)	Number of		Period-End			Period-End			Number of		Period-End			Period-End
		Contracts		Outstanding			Specific			Contracts		Outstanding			Specific
				Principal			Reserve					Principal			Reserve
	Commercial	1		$	688		$	—		5		$	4,581		$	277
	Real estate construction:
	Land	—		—			—			2		1,372			—
	Total loans that subsequently defaulted	1		$	688		$	—		7		$	5,953		$	277
Summary of past due loans, excluding covered loans, based upon the length of time the loans have been past due	'
	(in thousands)	30-59 Days			60-89 Days			Greater			Nonaccrual			Total Past			Current			Total Loans and
		Past Due			Past Due			Than 90						Due and						Leases
								Days and						Nonaccrual
								Accruing						Loans
	September 30, 2013
	Commercial	$	8,052		$	964		$	3		$	10,073		$	19,092		$	7,107,066		$	7,126,158
	Commercial real estate mortgages	2,631			—			—			19,020			21,651			3,055,532			3,077,183
	Residential mortgages:
	Fixed	—			1,238			379			3,901			5,518			1,457,866			1,463,384
	Variable	—			2,375			—			5,773			8,148			2,946,699			2,954,847
	Total residential mortgages	—			3,613			379			9,674			13,666			4,404,565			4,418,231
	Real estate construction:
	Construction	—			—			—			11,553			11,553			339,138			350,691
	Land	—			—			—			13,918			13,918			15,880			29,798
	Total real estate construction	—			—			—			25,471			25,471			355,018			380,489
	Home equity loans and lines of credit	274			—			—			5,289			5,563			676,316			681,879
	Installment:
	Commercial	—			—			—			—			—			379			379
	Consumer	24			—			—			21			45			151,683			151,728
	Total installment	24			—			—			21			45			152,062			152,107
	Lease financing	—			12			1			54			67			730,019			730,086
	Total	$	10,981		$	4,589		$	383		$	69,602		$	85,555		$	16,480,578		$	16,566,133
	December 31, 2012
	Commercial	$	6,207		$	4,219		$	602		$	9,087		$	20,115		$	6,191,238		$	6,211,353
	Commercial real estate mortgages	16,968			3,249			—			33,198			53,415			2,685,869			2,739,284
	Residential mortgages:
	Fixed	—			1,969			379			4,902			7,250			1,458,224			1,465,474
	Variable	—			—			—			4,701			4,701			2,492,030			2,496,731
	Total residential mortgages	—			1,969			379			9,603			11,951			3,950,254			3,962,205
	Real estate construction:
	Construction	—			—			—			15,067			15,067			239,740			254,807
	Land	—			859			—			25,815			26,674			31,709			58,383
	Total real estate construction	—			859			—			40,882			41,741			271,449			313,190
	Home equity loans and lines of credit	3,407			480			—			6,424			10,311			701,439			711,750
	Installment:
	Commercial	—			—			—			—			—			437			437
	Consumer	58			35			—			473			566			141,790			142,356
	Total installment	58			35			—			473			566			142,227			142,793
	Lease financing	2,633			2			—			120			2,755			734,965			737,720
	Total	$	29,273		$	10,813		$	981		$	99,787		$	140,854		$	14,677,441		$	14,818,295
Summary of the loan and lease portfolio, excluding covered loans, by loan type and credit quality classification	'
		September 30, 2013									December 31, 2012
	(in thousands)	Nonclassified			Classified			Total			Nonclassified			Classified			Total
	Commercial	$	7,011,906		$	114,252		$	7,126,158		$	6,073,459		$	137,894		$	6,211,353
	Commercial real estate mortgages	2,961,319			115,864			3,077,183			2,597,863			141,421			2,739,284
	Residential mortgages:
	Fixed	1,443,459			19,925			1,463,384			1,449,270			16,204			1,465,474
	Variable	2,931,433			23,414			2,954,847			2,479,449			17,282			2,496,731
	Total residential mortgages	4,374,892			43,339			4,418,231			3,928,719			33,486			3,962,205
	Real estate construction:
	Construction	324,908			25,783			350,691			225,577			29,230			254,807
	Land	15,589			14,209			29,798			28,710			29,673			58,383
	Total real estate construction	340,497			39,992			380,489			254,287			58,903			313,190
	Home equity loans and lines of credit	653,349			28,530			681,879			685,011			26,739			711,750
	Installment:
	Commercial	379			—			379			437			—			437
	Consumer	151,370			358			151,728			141,662			694			142,356
	Total installment	151,749			358			152,107			142,099			694			142,793
	Lease financing	727,500			2,586			730,086			733,803			3,917			737,720
	Total	$	16,221,212		$	344,921		$	16,566,133		$	14,415,241		$	403,054		$	14,818,295
Summary of the allowance for loan losses on covered loans	'
		For the three months ended						For the nine months ended
		September 30,						September 30,
	(in thousands)	2013			2012			2013			2012
	Balance, beginning of period	$	24,414		$	43,147		$	44,781		$	64,565
	Provision for losses	2,496			18,089			461			38,848
	Reduction in allowance due to loan removals	(1,028		)	(16,258		)	(19,360		)	(58,435		)
	Balance, end of period	$	25,882		$	44,978		$	25,882		$	44,978

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2013
Other Real Estate Owned	'
Summary of OREO activity	'
	The following table provides a summary of OREO activity for the three months ended September 30, 2013 and 2012:
		For the three months ended									For the three months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Non-Covered			Covered			Total			Non-Covered			Covered			Total
		OREO			OREO						OREO			OREO
	Balance, beginning of period	$	19,676		$	41,801		$	61,477		$	34,667		$	82,834		$	117,501
	Additions	—			4,008			4,008			1,485			14,989			16,474
	Sales	(771		)	(14,435		)	(15,206		)	(8,364		)	(9,938		)	(18,302		)
	Valuation adjustments	—			(1,556		)	(1,556		)	(733		)	(4,267		)	(5,000		)
	Balance, end of period	$	18,905		$	29,818		$	48,723		$	27,055		$	83,618		$	110,673
	The following table provides a summary of OREO activity for the nine months ended September 30, 2013 and 2012:
		For the nine months ended									For the nine months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Non-Covered			Covered			Total			Non-Covered			Covered			Total
		OREO			OREO						OREO			OREO
	Balance, beginning of period	$	21,027		$	58,276		$	79,303		$	30,790		$	98,550		$	129,340
	Additions	723			17,914			18,637			14,177			44,025			58,202
	Sales	(2,552		)	(39,597		)	(42,149		)	(12,781		)	(42,632		)	(55,413		)
	Valuation adjustments	(293		)	(6,775		)	(7,068		)	(5,131		)	(16,325		)	(21,456		)
	Balance, end of period	$	18,905		$	29,818		$	48,723		$	27,055		$	83,618		$	110,673

Borrowed_Funds_Tables

Borrowed Funds (Tables)	9 Months Ended
	Sep. 30, 2013
Borrowed Funds	'
Schedule of short-term borrowings and long-term debt	'
		September 30,		December 31,
	(in thousands) (1)	2013		2012
	Short-term borrowings
	Current portion of senior notes:
	City National Corporation - 5.125% Senior Notes Due February 2013	$	—	$	206,581
	Federal funds purchased	—		1,214,200
	Current portion of nonrecourse debt (5)	2,588		3,017
	Total short-term borrowings	$	2,588	$	1,423,798
	Long-term debt
	Senior notes:
	City National Corporation - 5.25% Senior Notes Due September 2020	$	299,444	$	297,613
	Subordinated debt:
	City National Bank - 9.00% Subordinated Notes Due July 2019 (2)	50,000		49,755
	City National Bank - 9.00% Subordinated Notes Due August 2019	75,000		74,876
	City National Bank - Fixed and Floating Subordinated Notes due August 2019 (3)	55,000		54,909
	City National Bank - 5.375% Subordinated Notes Due July 2022	149,993		148,642
	Junior subordinated debt:
	Floating Rate Business Bancorp Capital Trust I Securities due November 2034 (4)	5,155		5,152
	Nonrecourse debt (5)	84,734		75,104
	Total long-term debt	$	719,326	$	706,051
	(1)              The carrying value of certain borrowed funds is net of discount which is being amortized into interest expense, as well as the impact of fair value hedge accounting, if applicable.
	(2)              These notes bear a fixed interest rate of 9 percent for the initial five years from the date of issuance (July 15, 2009) and thereafter the rate is reset at the Bank’s option to either LIBOR plus 6 percent or to prime plus 5 percent. These notes are callable by the Bank, subject to any prior approval requirements of the Office of the Comptroller of the Currency (“OCC”), on or after July 2014.
	(3)              These notes bear a fixed interest rate of 9 percent for the initial five years from the date of issuance (August 12, 2009) and thereafter bear an interest rate equal to the three-month LIBOR rate plus 6 percent.  The rate is reset quarterly and is subject to an interest rate cap of 10 percent throughout the term of the notes. These notes are callable by the Bank, subject to any prior approval requirements of the OCC, on or after August 2014.
	(4)              These floating rate securities pay interest of three-month LIBOR plus 1.965 percent which is reset quarterly.  As of September 30, 2013, the interest rate was approximately 2.23 percent.
	(5)              Nonrecourse debt bears interest at an average rate of 3.88 percent as of September 30, 2013 and has maturity dates ranging from November 2013 to December 2019.

Shareholders_Equity_Tables

Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2013
Shareholders' Equity	'
Schedule of components of AOCI	'
		September 30,			December 31,
	(in thousands)	2013			2012
	Net unrealized (loss) gain on securities available-for-sale	$	(10,355	)	$	86,526
	Net unrealized gain on cash flow hedges	—			56
	Total accumulated other comprehensive (loss) income	$	(10,355	)	$	86,582
Schedule of components of total comprehensive (loss) income	'
		For the three months ended									For the three months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Pre-tax			Tax expense			Net-of-tax			Pre-tax			Tax expense			Net-of-tax
					(benefit)									(benefit)
	Securities available-for-sale:
	Net unrealized (losses) gains arising during the period	$	(23,334	)	$	(9,761	)	$	(13,573	)	$	20,701		$	8,659		$	12,042
	Reclassification adjustment for net gains included in net income (1)	(5,788		)	(2,421		)	(3,367		)	(48		)	(20		)	(28		)
	Non-credit related impairment loss	—			—			—			(1,471		)	(615		)	(856		)
	Total securities available-for-sale	(29,122		)	(12,182		)	(16,940		)	19,182			8,024			11,158
	Net change on cash flow hedges	—			—			—			(42		)	—			(42		)
	Total other comprehensive (loss) income	$	(29,122	)	$	(12,182	)	$	(16,940	)	$	19,140		$	8,024		$	11,116
	(1)    Recognized in Gain on sale of securities in the consolidated statements of income.
		For the nine months ended									For the nine months ended
		September 30, 2013									September 30, 2012
	(in thousands)	Pre-tax			Tax expense			Net-of-tax			Pre-tax			Tax expense			Net-of-tax
					(benefit)									(benefit)
	Securities available-for-sale:
	Net unrealized (losses) gains arising during the period	$	(155,089	)	$	(64,874	)	$	(90,215	)	$	37,330		$	15,615		$	21,715
	Reclassification adjustment for net gains included in net income (1)	(11,460		)	(4,794		)	(6,666		)	(459		)	(192		)	(267		)
	Non-credit related impairment loss	—			—			—			(1,471		)	(615		)	(856		)
	Total securities available-for-sale	(166,549		)	(69,668		)	(96,881		)	35,400			14,808			20,592
	Net change on cash flow hedges	(56		)	—			(56		)	(125		)	—			(125		)
	Pension liability adjustment (2)	—			—			—			1,085			—			1,085
	Total other comprehensive (loss) income	$	(166,605	)	$	(69,668	)	$	(96,937	)	$	36,360		$	14,808		$	21,552
	(1)    Recognized in Gain on sale of securities in the consolidated statements of income.
	(2)    Recognized in Salaries and employee benefits in the consolidated statements of income. See Note 15 for additional information.
Summary of entity's share repurchases activity	'
	Period	Total Number		Average
		of Shares		Price Paid
		(or Units)		per Share
		Purchased		(or Unit)
	July 1, 2013 to July 31, 2013	1,912		$	68.13
	August 1, 2013 to August 31, 2013	12		65.47
	September 1, 2013 to September 30, 2013	3,022		65.7
	Total share repurchases	4,946		66.64

Earnings_per_Common_Share_Tabl

Earnings per Common Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings per Common Share	'
Schedule of basic and diluted EPS	'
		For the three months ended				For the nine months ended
		September 30,				September 30,
	(in thousands, except per share amounts)	2013		2012		2013		2012
	Basic EPS:
	Net income attributable to City National Corporation	$	63,633	$	59,780	$	174,897	$	160,803
	Less: Dividends on preferred stock	2,407		—		7,219		—
	Net income available to common shareholders	$	61,226	$	59,780	$	167,678	$	160,803
	Less: Earnings allocated to participating securities	688		842		1,975		2,380
	Earnings allocated to common shareholders	$	60,538	$	58,938	$	165,703	$	158,423
	Weighted average common shares outstanding	54,274		53,425		54,039		53,092
	Basic earnings per common share	$	1.12	$	1.1	$	3.07	$	2.98
	Diluted EPS:
	Earnings allocated to common shareholders (1)	$	60,543	$	58,941	$	165,716	$	158,432
	Weighted average common shares outstanding	54,274		53,425		54,039		53,092
	Dilutive effect of equity awards	546		286		425		284
	Weighted average diluted common shares outstanding	54,820		53,711		54,464		53,376
	Diluted earnings per common share	$	1.1	$	1.1	$	3.04	$	2.97
	(1)    Earnings allocated to common shareholders for basic and diluted EPS may differ under the two-class method as a result of adding common stock equivalents for options to dilutive shares outstanding, which alters the ratio used to allocate earnings to common shareholders and participating securities for the purposes of calculating diluted EPS.

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2013
Share-Based Compensation	'
Summary of assumptions to estimate the fair value of stock option awards	'
		For the three months ended				For the nine months ended
		September 30,				September 30,
		2013		2012		2013		2012
	Weighted-average volatility	—		—		28.12	%	30.58	%
	Dividend yield	—		—		2.15	%	2.14	%
	Expected term (in years)	—		—		6.15		6.11
	Risk-free interest rate	—		—		1.24	%	1.44	%
Summary of options activity and related information under the Plan	'
				Weighted						Weighted
				Average			Aggregate			Average
		Number of		Exercise			Intrinsic			Remaining
		Shares		Price			Value			Contractual
	Options	(in thousands)		(per share)			(in thousands) (1)			Term
	Outstanding at January 1, 2013	4,417		$	53.91
	Granted	593		55.73
	Exercised	(587	)	42.53
	Forfeited or expired	(69	)	55.98
	Outstanding at September 30, 2013	4,354		$	55.66		$	54,522		5.7
	Exercisable at September 30, 2013	2,937		$	56.86		$	35,391		4.35
	(1) Includes in-the-money options only.
Summary of changes in unvested options and related information under the Plan	'
				Weighted Average
		Number of		Grant Date
		Shares		Fair Value
	Unvested Options	(in thousands)		(per share)
	Unvested at January 1, 2013	1,529		$	13.36
	Granted	593		12.57
	Vested	(682	)	12.25
	Forfeited	(23	)	13.33
	Unvested at September 30, 2013	1,417		$	13.58
Share-based compensation	'
Summary of changes in restricted stock and related information under the Plan	'
				Weighted Average
		Number of		Grant Date
		Shares		Fair Value
	Restricted Stock (1)	(in thousands)		(per share)
	Unvested at January 1, 2013	747		$	50.73
	Granted	70		56.01
	Vested	(198	)	45.91
	Forfeited	(8	)	49.82
	Unvested at September 30, 2013	611		$	52.91
	(1) Includes restricted stock units.
Cash-settled restricted stock units	'
Share-based compensation	'
Summary of changes in restricted stock and related information under the Plan	'
		Number of
		Shares
	Cash-Settled Restricted Stock Units	(in thousands)
	Unvested at January 1, 2013	101
	Granted	90
	Forfeited	(2	)
	Unvested at September 30, 2013	189

Derivative_Instruments_Tables

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2013
Derivative Instruments	'
Summary of notional amount and fair values of derivative instruments	'
	Notional Amounts and Fair Values of Derivative Instruments
		September 30, 2013									December 31, 2012
	(in millions)	Notional			Derivative			Derivative			Notional			Derivative		Derivative
		Amount			Assets			Liabilities			Amount			Assets		Liabilities
	Derivatives designated as hedging instruments
	Interest-rate swaps - fair value (1):
	Long-term and subordinated debt	$	—		$	—		$	—		$	205.5		$	2.3	$	0.1
	Total derivatives designated as hedging instruments	$	—		$	—		$	—		$	205.5		$	2.3	$	0.1
	Derivatives not designated as hedging instruments
	Interest-rate contracts:
	Swaps	$	2,818.40		$	46.8		$	45.8		$	2,243.60		$	64.2	$	64.2
	Interest-rate caps, floors and collars	260.5			1			1			240.1			0.2		0.2
	Options purchased	2			0.5			0.5			2			0.2		0.2
	Options written	2			—			—			2			—		—
	Total interest-rate contracts	$	3,082.90		$	48.3		$	47.3		$	2,487.70		$	64.6	$	64.6
	Option contracts	$	—		$	0.5		$	—		$	—		$	0.7	$	—
	Foreign exchange contracts:
	Spot and forward contracts	$	492.8		$	4.2		$	3.6		$	231.4		$	1.5	$	1.3
	Options purchased	7.8			—			—			—			—		—
	Options written	7.8			0.1			0.1			—			—		—
	Total foreign exchange contracts	$	508.4		$	4.3		$	3.7		$	231.4		$	1.5	$	1.3
	Total derivatives not designated as hedging instruments	$	3,591.30		$	53.1		$	51		$	2,719.10		$	66.8	$	65.9
	(1)    The Company offsets mark-to-market adjustments, interest receivable, interest payable and cash collateral received on interest-rate swaps that are executed with the same counterparty under a master netting agreement, and reports the net balance in other assets or other liabilities in the consolidated balance sheets. For purposes of this disclosure, mark-to-market adjustments, interest receivable and interest payable are presented on a gross basis and cash collateral is excluded from fair value amounts.
Schedule of impact of interest-rate swaps on interest income and interest expense	'
	(in millions)	Location in Consolidated		For the three months ended						For the nine months ended
	Derivatives Designated as			September 30,						September 30,
	Hedging Instruments	Statements of Income		2013			2012			2013			2012
	Interest-rate swaps-fair value	Interest expense		$	—		$	(2.1	)	$	(1.0	)	$	(6.2	)
	Interest-rate swaps-cash flow	Interest income		—			—			0.1			0.1
	Total income			$	—		$	2.1		$	1.1		$	6.3
Schedule of the amount of gains and losses on derivative contracts not designated as hedges	'
	(in millions)	Location in Consolidated		For the three months ended						For the nine months ended
	Derivatives Not Designated as			September 30,						September 30,
	Hedging Instruments	Statements of Income		2013			2012			2013			2012
	Interest-rate contracts	Other noninterest income		$	(0.3	)	$	0.1		$	0.9		$	(0.5	)
	Option contracts	Other noninterest income		(0.1		)	(0.3		)	0.3			(1.0		)
	Foreign exchange contracts	International services income		7.2			6.3			20.4			18.6
	Total income			$	6.8		$	6.1		$	21.6		$	17.1

Balance_Sheet_Offsetting_Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2013
Balance Sheet Offsetting	'
Schedule of information about financial instruments that are eligible for offset	'
		Gross		Gross			Net Amount		Gross Amounts
							Presented		Not Offset in the
									Balance Sheet
	(in thousands)	Amount		Amount			in the		Securities			Cash			Net
		Recognized		Offset			Balance Sheet		Collateral			Collateral			Amount
	September 30, 2013
	Financial assets:
	Derivatives not designated as hedging instruments	$	13,196	$	(8,463	)	$	4,733	$	—		$	—		$	4,733
	Reverse repurchase agreements	200,000		—			200,000		(200,000		)	—			—
	Total financial assets	$	213,196	$	(8,463	)	$	204,733	$	(200,000	)	$	—		$	4,733
	Financial liabilities:
	Derivatives not designated as hedging instruments	$	43,332	$	(8,463	)	$	34,869	$	(13,638	)	$	(10,718	)	$	10,513
	Total financial liabilities	$	43,332	$	(8,463	)	$	34,869	$	(13,638	)	$	(10,718	)	$	10,513
	December 31, 2012
	Financial assets:
	Derivatives designated as hedging instruments	$	2,249	$	(83	)	$	2,166	$	(1,034	)	$	—		$	1,132
	Derivatives not designated as hedging instruments	1,920		(1,454		)	466		—			—			466
	Total financial assets	$	4,169	$	(1,537	)	$	2,632	$	(1,034	)	$	—		$	1,598
	Financial liabilities:
	Derivatives designated as hedging instruments	$	83	$	(83	)	$	—	$	—		$	—		$	—
	Derivatives not designated as hedging instruments	65,461		(1,453		)	64,008		(48,697		)	—			15,311
	Total financial liabilities	$	65,544	$	(1,536	)	$	64,008	$	(48,697	)	$	—		$	15,311

Noncontrolling_Interest_Tables

Noncontrolling Interest (Tables)	9 Months Ended
	Sep. 30, 2013
Noncontrolling Interest	'
Schedule of summary for redeemable noncontrolling interest	'
		For the nine months ended
		September 30,
	(in thousands)	2013			2012
	Balance, beginning of period	$	41,112		$	44,643
	Net income	1,657			1,024
	Distributions to redeemable noncontrolling interest	(1,285		)	(1,261		)
	Additions and redemptions, net	(1,625		)	(1,987		)
	Adjustments to fair value	(19		)	(1,033		)
	Balance, end of period	$	39,840		$	41,386

Segment_Results_Tables

Segment Results (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Results	'
Schedule of segment results	'
		For the three months ended September 30, 2013
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	194,678	$	243	$	19,350		$	214,271
	Provision for losses on covered loans	2,496		—		—			2,496
	Noninterest income	38,601		57,536		(7,254		)	88,883
	Depreciation and amortization	3,263		1,878		4,618			9,759
	Noninterest expense	170,019		48,184		(18,598		)	199,605
	Income before income taxes	57,501		7,717		26,076			91,294
	Provision for income taxes	17,153		2,120		7,779			27,052
	Net income	40,348		5,597		18,297			64,242
	Less: Net income attributable to noncontrolling interest	—		609		—			609
	Net income attributable to City National Corporation	$	40,348	$	4,988	$	18,297		$	63,633
	Selected Average Balances:
	Loans and leases, excluding covered loans	$	15,989,181	$	—	$	50,572		$	16,039,753
	Covered loans	818,928		—		—			818,928
	Total assets	17,014,239		644,677		10,402,218			28,061,134
	Deposits	23,817,083		76,052		408,512			24,301,647
	Goodwill	393,176		249,446		—			642,622
	Customer-relationship intangibles, net	4,445		39,024		—			43,469
		For the three months ended September 30, 2012
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	184,552	$	1,133	$	24,237		$	209,922
	Provision for credit losses on loans and leases, excluding covered loans	2,000		—		—			2,000
	Provision for losses on covered loans	18,089		—		—			18,089
	Noninterest income	59,911		54,405		(7,059		)	107,257
	Depreciation and amortization	3,569		1,996		4,691			10,256
	Noninterest expense	169,652		45,387		(17,409		)	197,630
	Income before income taxes	51,153		8,155		29,896			89,204
	Provision for income taxes	16,730		2,545		9,777			29,052
	Net income	34,423		5,610		20,119			60,152
	Less: Net income attributable to noncontrolling interest	—		372		—			372
	Net income attributable to City National Corporation	$	34,423	$	5,238	$	20,119		$	59,780
	Selected Average Balances:
	Loans and leases, excluding covered loans	$	13,526,284	$	—	$	61,224		$	13,587,508
	Covered loans	1,207,031		—		—			1,207,031
	Total assets	15,098,090		638,445		9,918,059			25,654,594
	Deposits	21,298,105		104,195		538,520			21,940,820
	Goodwill	393,176		239,297		—			632,473
	Customer-relationship intangibles, net	7,392		47,359		—			54,751
		For the nine months ended September 30, 2013
		Commercial and		Wealth					Consolidated
	(in thousands)	Private Banking		Management		Other			Company
	Earnings Summary:
	Net interest income	$	563,662	$	805	$	53,796		$	618,263
	Provision for losses on covered loans	461		—		—			461
	Noninterest income	119,418		171,461		(26,259		)	264,620
	Depreciation and amortization	10,505		5,654		13,884			30,043
	Noninterest expense	512,234		143,920		(54,064		)	602,090
	Income before income taxes	159,880		22,692		67,717			250,289
	Provision for income taxes	47,414		6,238		20,083			73,735
	Net income	112,466		16,454		47,634			176,554
	Less: Net income attributable to noncontrolling interest	—		1,657		—			1,657
	Net income attributable to City National Corporation	$	112,466	$	14,797	$	47,634		$	174,897
	Selected Average Balances:
	Loans and leases, excluding covered loans	$	15,378,936	$	—	$	53,303		$	15,432,239
	Covered loans	905,411		—		—			905,411
	Total assets	16,505,794		647,273		10,594,847			27,747,914
	Deposits	22,696,050		100,922		487,093			23,284,065
	Goodwill	393,176		249,446		—			642,622
Customer-relationship intangibles, net	5,174		40,197		—			45,371
	For the nine months ended September 30, 2012
	Commercial and		Wealth					Consolidated
(in thousands)	Private Banking		Management		Other			Company
Earnings Summary:
Net interest income	$	541,125	$	2,396	$	83,593		$	627,114
Provision for credit losses on loans and leases, excluding covered loans	3,000		—		—			3,000
Provision for losses on covered loans	38,848		—		—			38,848
Noninterest income	156,884		133,743		(32,902		)	257,725
Depreciation and amortization	10,565		4,980		13,556			29,101
Noninterest expense	506,437		117,650		(50,066		)	574,021
Income before income taxes	139,159		13,509		87,201			239,869
Provision for income taxes	45,469		4,080		28,493			78,042
Net income	93,690		9,429		58,708			161,827
Less: Net income attributable to noncontrolling interest	—		1,024		—			1,024
Net income attributable to City National Corporation	$	93,690	$	8,405	$	58,708		$	160,803
Selected Average Balances:
Loans and leases, excluding covered loans	$	12,994,726	$	—	$	55,797		$	13,050,523
Covered loans	1,328,484		—		—			1,328,484
Total assets	14,656,439		569,047		9,332,544			24,558,030
Deposits	20,469,604		100,038		469,149			21,038,791
Goodwill	362,868		188,197		—			551,065
Customer-relationship intangibles, net	8,173		33,240		—			41,413

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Details)	9 Months Ended
	Sep. 30, 2013
	item
Summary of Significant Accounting Policies	'
Number of offices for delivery of banking, trust and investment services	77
Number of investment advisory affiliates	5
Number of unconsolidated subsidiary	1

Business_Combinations_Details

Business Combinations (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Jul. 31, 2012	Jul. 02, 2012	Jul. 02, 2012	Apr. 30, 2012
			Rochdale Investment Management, LLC	Rochdale Investment Management, LLC	Rochdale Investment Management, LLC	First American Equipment Finance
					Client Contract
Business acquisitions	'	'	'	'	'	'
Acquired goodwill	$642,622,000	$642,622,000	'	$86,500,000	'	$68,400,000
Customer contract intangible	'	'	'	'	19,000,000	'
Recognized contingent consideration liability at fair value	'	'	'	46,700,000	'	'
Period of additional cash consideration payment	'	'	'6 years	'	'	'
Low-end of the potential range of estimate of total consideration payment	'	'	'	32,000,000	'	'
High-end of the potential range of estimate of total consideration payment	'	'	'	74,000,000	'	'
Carrying value of assets acquired	'	'	'	'	'	343,000,000
Carrying value of liabilities assumed	'	'	'	'	'	325,000,000
Fair value of acquired lease receivables	'	'	'	'	'	318,300,000
Borrowings and nonrecourse debt	'	'	'	'	'	$320,900,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Fair Value Measurements	'	'	'	'	'
Fair value of assets transfers from Level 1 to Level 2	$0	'	$0	'	'
Fair value of assets transfers from Level 2 to Level 1	0	'	0	'	'
Fair value of liabilities transfers from Level 1 to Level 2	0	'	0	'	'
Fair value of liabilities transfers from Level 2 to Level 1	0	'	0	'	'
Assets	'	'	'	'	'
Assets purchases measured on fair value of Level 3 on a recurring basis	'	'	0	0	'
Assets sales measured on fair value of Level 3 on a recurring basis	'	'	0	0	'
Fair value of assets transfers out of Level 3	'	'	0	0	'
Liabilities	'	'	'	'	'
Redeemable noncontrolling interest	39,840,000	'	39,840,000	'	41,112,000
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Total net losses recognized	-1,409,000	-6,304,000	-6,470,000	-29,278,000	'
Significant Unobservable Inputs Level 3 | Maximum	'	'	'	'	'
Assets	'	'	'	'	'
Percent of total assets	1.00%	'	1.00%	'	1.00%
Measured on a Recurring Basis | Fair Value	'	'	'	'	'
Assets	'	'	'	'	'
Trading securities	51,451,000	'	51,451,000	'	115,059,000
Derivatives assets	44,634,000	'	44,634,000	'	67,496,000
Total assets at fair value	6,991,215,000	'	6,991,215,000	'	9,388,544,000
Percent of total assets	24.00%	'	24.00%	'	33.00%
Liabilities	'	'	'	'	'
Derivatives liabilities	42,584,000	'	42,584,000	'	64,432,000
Contingent consideration liability	49,350,000	'	49,350,000	'	47,724,000
FDIC clawback liability	11,279,000	'	11,279,000	'	9,970,000
Other liabilities	919,000	'	919,000	'	368,000
Total liabilities at fair value	104,132,000	'	104,132,000	'	122,494,000
Redeemable noncontrolling interest	39,840,000	'	39,840,000	'	41,112,000
Measured on a Recurring Basis | Fair Value | U.S. Treasury	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	35,425,000	'	35,425,000	'	20,397,000
Measured on a Recurring Basis | Fair Value | Federal agency - Debt	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	1,002,447,000	'	1,002,447,000	'	2,349,202,000
Measured on a Recurring Basis | Fair Value | Federal agency - MBS	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	197,173,000	'	197,173,000	'	693,032,000
Measured on a Recurring Basis | Fair Value | CMOs - Federal agency	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	4,742,584,000	'	4,742,584,000	'	5,318,253,000
Measured on a Recurring Basis | Fair Value | CMOs - Non-agency	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	43,312,000	'	43,312,000	'	61,513,000
Measured on a Recurring Basis | Fair Value | State and municipal	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	475,786,000	'	475,786,000	'	454,474,000
Measured on a Recurring Basis | Fair Value | Other debt securities	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	392,356,000	'	392,356,000	'	307,417,000
Measured on a Recurring Basis | Fair Value | Equity securities and mutual funds	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	6,047,000	'	6,047,000	'	1,701,000
Measured on a Recurring Basis | Quoted Prices in Active Markets Level 1	'	'	'	'	'
Assets	'	'	'	'	'
Trading securities	48,744,000	'	48,744,000	'	113,010,000
Derivatives assets	4,213,000	'	4,213,000	'	218,000
Total assets at fair value	94,429,000	'	94,429,000	'	135,326,000
Liabilities	'	'	'	'	'
Derivatives liabilities	3,577,000	'	3,577,000	'	'
Total liabilities at fair value	3,577,000	'	3,577,000	'	'
Measured on a Recurring Basis | Quoted Prices in Active Markets Level 1 | U.S. Treasury	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	35,425,000	'	35,425,000	'	20,397,000
Measured on a Recurring Basis | Quoted Prices in Active Markets Level 1 | Equity securities and mutual funds	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	6,047,000	'	6,047,000	'	1,701,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2	'	'	'	'	'
Assets	'	'	'	'	'
Trading securities	2,707,000	'	2,707,000	'	2,049,000
Derivatives assets	40,421,000	'	40,421,000	'	67,278,000
Total assets at fair value	6,835,198,000	'	6,835,198,000	'	9,188,031,000
Liabilities	'	'	'	'	'
Derivatives liabilities	39,007,000	'	39,007,000	'	64,432,000
Other liabilities	919,000	'	919,000	'	368,000
Total liabilities at fair value	39,926,000	'	39,926,000	'	64,800,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | Federal agency - Debt	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	1,002,447,000	'	1,002,447,000	'	2,349,202,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | Federal agency - MBS	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	197,173,000	'	197,173,000	'	693,032,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | CMOs - Federal agency	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	4,742,584,000	'	4,742,584,000	'	5,318,253,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | CMOs - Non-agency	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	43,312,000	'	43,312,000	'	61,513,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | State and municipal	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	429,570,000	'	429,570,000	'	407,429,000
Measured on a Recurring Basis | Significant Other Observable Inputs Level 2 | Other debt securities	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	376,984,000	'	376,984,000	'	289,275,000
Measured on a Recurring Basis | Significant Unobservable Inputs Level 3	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	61,588,000	'	61,588,000	'	65,187,000
Prepayment rate (as a percent)	'	'	2.00%	'	'
Default rate of performing collateral (as a percent)	'	'	0.75%	'	'
Recovery Rate (as a percent)	'	'	15.00%	'	'
Recovery Rate lag time	'	'	'2 years	'	'
Liabilities	'	'	'	'	'
Contingent consideration liability	49,350,000	'	49,350,000	'	47,724,000
FDIC clawback liability	11,279,000	'	11,279,000	'	9,970,000
Total liabilities at fair value	60,629,000	'	60,629,000	'	57,694,000
Redeemable noncontrolling interest	39,840,000	'	39,840,000	'	41,112,000
Measured on a Recurring Basis | Significant Unobservable Inputs Level 3 | State and municipal	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	46,216,000	'	46,216,000	'	47,045,000
Measured on a Recurring Basis | Significant Unobservable Inputs Level 3 | Other debt securities	'	'	'	'	'
Assets	'	'	'	'	'
Securities available-for-sale	15,372,000	'	15,372,000	'	18,142,000
Measured on a Nonrecurring Basis | Commercial	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	'	'	'	-368,000	'
Measured on a Nonrecurring Basis | Commercial real estate mortgages	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	-934,000	306,000	-641,000	-1,630,000	'
Measured on a Nonrecurring Basis | Residential mortgage	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	-2,000	-31,000	-224,000	-1,152,000	'
Measured on a Nonrecurring Basis | Real estate construction	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	'	130,000	'	-6,623,000	'
Measured on a Nonrecurring Basis | Home equity loans and lines of credit	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	'	16,000	116,000	-47,000	'
Measured on a Nonrecurring Basis | Installment loan	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Collateral dependent impaired loans:	'	-101,000	-138,000	-208,000	'
Measured on a Nonrecurring Basis | Other real estate owned	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Total net losses recognized	-364,000	-4,147,000	-5,075,000	-16,312,000	'
Total net losses recognized on covered assets	400,000	3,600,000	5,000,000	14,700,000	'
Measured on a Nonrecurring Basis | Private equity and alternative investments	'	'	'	'	'
Net (losses) gains recognized for assets measured at fair value on nonrecurring basis	'	'	'	'	'
Total net losses recognized	-109,000	-2,477,000	-508,000	-2,938,000	'
Measured on a Nonrecurring Basis | Fair Value	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	19,973,000	'	19,973,000	'	75,251,000
Measured on a Nonrecurring Basis | Fair Value | Maximum	'	'	'	'	'
Assets	'	'	'	'	'
Percent of total assets	1.00%	'	1.00%	'	1.00%
Measured on a Nonrecurring Basis | Fair Value | Commercial	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	15,000	'	15,000	'	2,655,000
Measured on a Nonrecurring Basis | Fair Value | Commercial real estate mortgages	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	1,214,000	'	1,214,000	'	10,963,000
Measured on a Nonrecurring Basis | Fair Value | Residential mortgage	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	1,442,000	'	1,442,000	'	1,811,000
Measured on a Nonrecurring Basis | Fair Value | Real estate construction	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	7,918,000
Measured on a Nonrecurring Basis | Fair Value | Home equity loans and lines of credit	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	780,000
Measured on a Nonrecurring Basis | Fair Value | Installment loan	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	550,000
Measured on a Nonrecurring Basis | Fair Value | Other real estate owned	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	16,383,000	'	16,383,000	'	44,396,000
Measured on a Nonrecurring Basis | Fair Value | Private equity and alternative investments	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	919,000	'	919,000	'	6,178,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	19,973,000	'	19,973,000	'	75,251,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Commercial	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	15,000	'	15,000	'	2,655,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Commercial real estate mortgages	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	1,214,000	'	1,214,000	'	10,963,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Residential mortgage	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	1,442,000	'	1,442,000	'	1,811,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Real estate construction	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	7,918,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Home equity loans and lines of credit	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	780,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Installment loan	'	'	'	'	'
Assets	'	'	'	'	'
Collateral dependent impaired loans	'	'	'	'	550,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Other real estate owned	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	16,383,000	'	16,383,000	'	44,396,000
Measured on a Nonrecurring Basis | Significant Unobservable Inputs Level 3 | Private equity and alternative investments	'	'	'	'	'
Assets	'	'	'	'	'
Total assets at fair value	$919,000	'	$919,000	'	$6,178,000

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Collateral dependent impaired loans	'
Information about valuation method, inputs and assumptions for nonrecurring Level 3 fair value measurements	'
Fair value of assets	$2,671
Other real estate owned	'
Information about valuation method, inputs and assumptions for nonrecurring Level 3 fair value measurements	'
Fair value of assets	16,383
Private equity and alternative investments	'
Information about valuation method, inputs and assumptions for nonrecurring Level 3 fair value measurements	'
Fair value of assets	$919

Fair_Value_Measurements_Detail2

Fair Value Measurements (Details 3) (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Total realized/unrealized gains (losses):	'	'
Paydowns received on Level 3 assets measured on a recurring basis	$3,700,000	$3,200,000
Securities Available-for-Sale	'	'
Level 3 Assets Measured on a Recurring Basis	'	'
Balance, beginning of period	65,187,000	19,583,000
Total realized/unrealized gains (losses):	'	'
Included in other comprehensive income	-35,000	1,770,000
Settlements	-3,655,000	-3,152,000
Transfers into level 3	'	47,165,000
Other (1)	91,000	73,000
Balance, end of period	$61,588,000	$65,439,000

Fair_Value_Measurements_Detail3

Fair Value Measurements (Details 4) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Contingent Consideration Liability	'	'
Level 3 Liabilities Measured on a Recurring Basis	'	'
Balance, beginning of period	($47,724)	'
Total realized/unrealized gains (losses):	'	'
Additions	'	-45,768
Other (1)	-1,626	-515
Balance, end of period	-49,350	-46,283
FDIC Clawback Liability	'	'
Level 3 Liabilities Measured on a Recurring Basis	'	'
Balance, beginning of period	-9,970	-8,103
Total realized/unrealized gains (losses):	'	'
Included in earnings	-1,309	-1,811
Balance, end of period	($11,279)	($9,914)

Fair_Value_Measurements_Detail4

Fair Value Measurements (Details 5) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Financial Assets:	'	'
Cash and due from banks	$301,106,000	$151,969,000
Due from banks - interest-bearing	1,045,608,000	246,336,000
Securities purchased under resale agreements	200,000,000	'
Loans and leases, net of allowance	16,270,186,000	14,540,407,000
Covered loans, net of allowance	754,190,000	986,223,000
FDIC indemnification asset	101,124,000	150,018,000
Investment in FHLB and FRB stock	71,800,000	90,000,000
Quoted Prices in Active Markets Level 1	'	'
Financial Assets:	'	'
Cash and due from banks	301,100,000	152,000,000
Due from banks - interest-bearing	1,045,600,000	246,300,000
Federal funds sold	'	17,100,000
Financial Liabilities:	'	'
Federal funds purchased and securities sold under repurchase agreements	'	1,214,200,000
Significant Other Observable Inputs Level 2	'	'
Financial Assets:	'	'
Securities purchased under resale agreements	197,000,000	'
Securities held-to-maturity	1,608,100,000	1,446,600,000
Investment in FHLB and FRB stock	71,800,000	90,000,000
Financial Liabilities:	'	'
Deposits	24,503,000,000	22,734,500,000
Other short-term borrowings	'	207,600,000
Long-term debt	693,600,000	698,900,000
Significant Unobservable Inputs Level 3	'	'
Financial Assets:	'	'
Loans and leases, net of allowance	16,719,800,000	14,988,600,000
Covered loans, net of allowance	802,500,000	1,055,000,000
FDIC indemnification asset	84,300,000	123,900,000
Financial Liabilities:	'	'
Deposits	737,000,000	772,400,000
Other short-term borrowings	2,600,000	3,100,000
Long-term debt	84,600,000	75,900,000
Carrying Amount	'	'
Financial Assets:	'	'
Cash and due from banks	301,100,000	152,000,000
Due from banks - interest-bearing	1,045,600,000	246,300,000
Securities purchased under resale agreements	200,000,000	'
Federal funds sold	'	17,100,000
Securities held-to-maturity	1,649,500,000	1,398,400,000
Loans and leases, net of allowance	16,270,200,000	14,540,400,000
Covered loans, net of allowance	754,200,000	986,200,000
FDIC indemnification asset	101,100,000	150,000,000
Investment in FHLB and FRB stock	71,800,000	90,000,000
Financial Liabilities:	'	'
Deposits	25,236,900,000	23,502,400,000
Federal funds purchased and securities sold under repurchase agreements	'	1,214,200,000
Other short-term borrowings	2,600,000	209,600,000
Long-term debt	719,300,000	706,100,000
Fair Value	'	'
Financial Assets:	'	'
Cash and due from banks	301,100,000	152,000,000
Due from banks - interest-bearing	1,045,600,000	246,300,000
Securities purchased under resale agreements	197,000,000	'
Federal funds sold	'	17,100,000
Securities held-to-maturity	1,608,100,000	1,446,600,000
Loans and leases, net of allowance	16,719,800,000	14,988,600,000
Covered loans, net of allowance	802,500,000	1,055,000,000
FDIC indemnification asset	84,300,000	123,900,000
Investment in FHLB and FRB stock	71,800,000	90,000,000
Financial Liabilities:	'	'
Deposits	25,240,000,000	23,506,900,000
Federal funds purchased and securities sold under repurchase agreements	'	1,214,200,000
Other short-term borrowings	2,600,000	210,700,000
Long-term debt	$778,200,000	$774,800,000

Securities_Details

Securities (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Securities	'	'	'	'	'
Total securities	$8,600,000,000	'	$8,600,000,000	'	$10,720,000,000
Trading securities, at fair value	51,451,000	'	51,451,000	'	115,059,000
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	6,912,931,000	'	6,912,931,000	'	9,057,238,000
Gross Unrealized Gains	70,608,000	'	70,608,000	'	163,295,000
Gross Unrealized Losses	-88,409,000	'	-88,409,000	'	-14,544,000
Fair Value	6,895,130,000	'	6,895,130,000	'	9,205,989,000
Proceeds from sales of securities	584,700,000	1,000,000	1,835,775,000	6,216,000	'
Securities held-to-maturity:	'	'	'	'	'
Amortized Cost	1,649,520,000	'	1,649,520,000	'	1,398,403,000
Gross Unrealized Gains	5,596,000	'	5,596,000	'	49,617,000
Gross Unrealized Losses	-47,042,000	'	-47,042,000	'	-1,421,000
Fair Value	1,608,074,000	'	1,608,074,000	'	1,446,599,000
Proceeds from held-to-maturity	0	0	0	0	'
Realized gains and losses	'	'	'	'	'
Gross realized gains	17,533,000	1,315,000	24,369,000	1,851,000	'
Gross realized losses	-11,745,000	-459,000	-11,745,000	-825,000	'
Net realized gains	5,788,000	856,000	12,624,000	1,026,000	'
Interest and dividend income on securities (including trading securities)	'	'	'	'	'
Taxable interest income	35,500,000	40,000,000	112,100,000	120,800,000	'
Nontaxable interest income	4,500,000	4,100,000	13,300,000	12,000,000	'
Dividend income	19,000	100,000	100,000	300,000	'
Total debt securities	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	6,912,594,000	'	6,912,594,000	'	9,056,902,000
Gross Unrealized Gains	64,898,000	'	64,898,000	'	161,930,000
Gross Unrealized Losses	-88,409,000	'	-88,409,000	'	-14,544,000
Fair Value	6,889,083,000	'	6,889,083,000	'	9,204,288,000
U.S. Treasury	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	35,400,000	'	35,400,000	'	20,393,000
Gross Unrealized Gains	25,000	'	25,000	'	7,000
Gross Unrealized Losses	'	'	'	'	-3,000
Fair Value	35,425,000	'	35,425,000	'	20,397,000
Federal agency - Debt	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	1,007,019,000	'	1,007,019,000	'	2,344,374,000
Gross Unrealized Gains	1,078,000	'	1,078,000	'	5,031,000
Gross Unrealized Losses	-5,650,000	'	-5,650,000	'	-203,000
Fair Value	1,002,447,000	'	1,002,447,000	'	2,349,202,000
Securities held-to-maturity:	'	'	'	'	'
Amortized Cost	140,020,000	'	140,020,000	'	97,183,000
Gross Unrealized Gains	182,000	'	182,000	'	4,032,000
Gross Unrealized Losses	-4,305,000	'	-4,305,000	'	'
Fair Value	135,897,000	'	135,897,000	'	101,215,000
Federal agency - MBS	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	192,345,000	'	192,345,000	'	653,428,000
Gross Unrealized Gains	7,054,000	'	7,054,000	'	39,673,000
Gross Unrealized Losses	-2,226,000	'	-2,226,000	'	-69,000
Fair Value	197,173,000	'	197,173,000	'	693,032,000
Securities held-to-maturity:	'	'	'	'	'
Amortized Cost	359,952,000	'	359,952,000	'	303,642,000
Gross Unrealized Gains	1,187,000	'	1,187,000	'	11,490,000
Gross Unrealized Losses	-9,753,000	'	-9,753,000	'	-182,000
Fair Value	351,386,000	'	351,386,000	'	314,950,000
CMOs - Federal agency	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	4,773,336,000	'	4,773,336,000	'	5,233,126,000
Gross Unrealized Gains	40,818,000	'	40,818,000	'	91,165,000
Gross Unrealized Losses	-71,570,000	'	-71,570,000	'	-6,038,000
Fair Value	4,742,584,000	'	4,742,584,000	'	5,318,253,000
Securities held-to-maturity:	'	'	'	'	'
Amortized Cost	849,600,000	'	849,600,000	'	745,980,000
Gross Unrealized Gains	3,567,000	'	3,567,000	'	28,973,000
Gross Unrealized Losses	-18,158,000	'	-18,158,000	'	-382,000
Fair Value	835,009,000	'	835,009,000	'	774,571,000
CMOs - Non-agency	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	44,484,000	'	44,484,000	'	62,975,000
Gross Unrealized Gains	213,000	'	213,000	'	662,000
Gross Unrealized Losses	-1,385,000	'	-1,385,000	'	-2,124,000
Fair Value	43,312,000	'	43,312,000	'	61,513,000
State and municipal	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	466,633,000	'	466,633,000	'	437,266,000
Gross Unrealized Gains	10,490,000	'	10,490,000	'	17,447,000
Gross Unrealized Losses	-1,337,000	'	-1,337,000	'	-239,000
Fair Value	475,786,000	'	475,786,000	'	454,474,000
Securities held-to-maturity:	'	'	'	'	'
Amortized Cost	299,948,000	'	299,948,000	'	251,598,000
Gross Unrealized Gains	660,000	'	660,000	'	5,122,000
Gross Unrealized Losses	-14,826,000	'	-14,826,000	'	-857,000
Fair Value	285,782,000	'	285,782,000	'	255,863,000
Other debt securities	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	393,377,000	'	393,377,000	'	305,340,000
Gross Unrealized Gains	5,220,000	'	5,220,000	'	7,945,000
Gross Unrealized Losses	-6,241,000	'	-6,241,000	'	-5,868,000
Fair Value	392,356,000	'	392,356,000	'	307,417,000
Equity securities and mutual funds	'	'	'	'	'
Securities available-for-sale:	'	'	'	'	'
Amortized Cost	337,000	'	337,000	'	336,000
Gross Unrealized Gains	5,710,000	'	5,710,000	'	1,365,000
Fair Value	$6,047,000	'	$6,047,000	'	$1,701,000

Securities_Details_2

Securities (Details 2) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Fair Value	$6,895,130	$9,205,989
Total debt securities	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	510,393	'
Securities available-for-sale, Over 1 year through 5 years, fair value	5,081,607	'
Securities available-for-sale, Over 5 years through 10 years, fair value	1,289,387	'
Securities available-for-sale, Over 10 years, fair value	7,696	'
Fair Value	6,889,083	9,204,288
Expected remaining maturities of debt securities available-for-sale, amortized cost	'	'
Securities available-for-sale, One year or less, amortized cost	507,840	'
Securities available-for-sale, Over 1 year through 5 years, amortized cost	5,082,693	'
Securities available-for-sale, Over 5 years through 10 years, amortized cost	1,314,292	'
Securities available-for-sale, Over 10 years, amortized cost	7,769	'
Total of debt securities available-for-sale, amortized cost	6,912,594	'
Expected remaining maturities of debt securities held-to-maturity, amortized cost	'	'
Securities held-to-maturity, One year or less, amortized cost	659	'
Securities held-to-maturity, Over 1 year through 5 years, amortized cost	212,118	'
Securities held-to-maturity, Over 5 years through 10 years, amortized cost	1,210,746	'
Securities held-to-maturity, Over 10 years, amortized cost	225,997	'
Total of debt securities held-to-maturity, amortized cost	1,649,520	'
U.S. Treasury	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	12,078	'
Securities available-for-sale, Over 1 year through 5 years, fair value	23,347	'
Fair Value	35,425	20,397
Federal agency - Debt	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	317,377	'
Securities available-for-sale, Over 1 year through 5 years, fair value	625,652	'
Securities available-for-sale, Over 5 years through 10 years, fair value	59,418	'
Fair Value	1,002,447	2,349,202
Expected remaining maturities of debt securities held-to-maturity, amortized cost	'	'
Securities held-to-maturity, Over 1 year through 5 years, amortized cost	7,000	'
Securities held-to-maturity, Over 5 years through 10 years, amortized cost	60,022	'
Securities held-to-maturity, Over 10 years, amortized cost	72,998	'
Total of debt securities held-to-maturity, amortized cost	140,020	'
Federal agency - MBS	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, Over 1 year through 5 years, fair value	68,967	'
Securities available-for-sale, Over 5 years through 10 years, fair value	128,206	'
Fair Value	197,173	693,032
Expected remaining maturities of debt securities held-to-maturity, amortized cost	'	'
Securities held-to-maturity, Over 1 year through 5 years, amortized cost	14,646	'
Securities held-to-maturity, Over 5 years through 10 years, amortized cost	340,827	'
Securities held-to-maturity, Over 10 years, amortized cost	4,479	'
Total of debt securities held-to-maturity, amortized cost	359,952	'
CMOs - Federal agency	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	128,236	'
Securities available-for-sale, Over 1 year through 5 years, fair value	3,706,036	'
Securities available-for-sale, Over 5 years through 10 years, fair value	908,312	'
Fair Value	4,742,584	5,318,253
Expected remaining maturities of debt securities held-to-maturity, amortized cost	'	'
Securities held-to-maturity, Over 1 year through 5 years, amortized cost	181,723	'
Securities held-to-maturity, Over 5 years through 10 years, amortized cost	667,877	'
Total of debt securities held-to-maturity, amortized cost	849,600	'
CMOs - Non-agency	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	111	'
Securities available-for-sale, Over 1 year through 5 years, fair value	9,218	'
Securities available-for-sale, Over 5 years through 10 years, fair value	33,983	'
Fair Value	43,312	61,513
State and municipal	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	39,865	'
Securities available-for-sale, Over 1 year through 5 years, fair value	355,575	'
Securities available-for-sale, Over 5 years through 10 years, fair value	72,650	'
Securities available-for-sale, Over 10 years, fair value	7,696	'
Fair Value	475,786	454,474
Expected remaining maturities of debt securities held-to-maturity, amortized cost	'	'
Securities held-to-maturity, One year or less, amortized cost	659	'
Securities held-to-maturity, Over 1 year through 5 years, amortized cost	8,749	'
Securities held-to-maturity, Over 5 years through 10 years, amortized cost	142,020	'
Securities held-to-maturity, Over 10 years, amortized cost	148,520	'
Total of debt securities held-to-maturity, amortized cost	299,948	'
Other debt securities	'	'
Expected remaining maturities of debt securities available-for-sale, fair value	'	'
Securities available-for-sale, One year or less fair value	12,726	'
Securities available-for-sale, Over 1 year through 5 years, fair value	292,812	'
Securities available-for-sale, Over 5 years through 10 years, fair value	86,818	'
Fair Value	$392,356	$307,417

Securities_Details_3

Securities (Details 3) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Available-for-sale securities	'	'	'	'	'
Impairment losses recognized in earnings on other-than-temporarily impaired securities	$144,000	$39,000	$326,000	$217,000	'
Non-credit-related losses other-than-temporary impairment on available-for-sale securities	0	1,471,000	0	1,471,000	'
Credit related other-than-temporary impairment recognized in earnings	'	'	'	'	'
Fair value of total securities available-for-sale	6,895,130,000	'	6,895,130,000	'	9,205,989,000
Total debt securities	'	'	'	'	'
Credit related other-than-temporary impairment recognized in earnings	'	'	'	'	'
Balance, beginning of period	3,654,000	17,366,000	16,486,000	17,531,000	'
Subsequent credit-related impairment	144,000	39,000	326,000	217,000	'
Reduction for securities sold or redeemed	'	-537,000	-12,761,000	-537,000	'
Reduction for increase in expected cash flows on securities for which OTTI was previously recognized	-421,000	-267,000	-674,000	-610,000	'
Balance, end of period	3,377,000	16,601,000	3,377,000	16,601,000	'
Fair value of total securities available-for-sale	6,889,083,000	'	6,889,083,000	'	9,204,288,000
Non-agency CMOs	'	'	'	'	'
Credit related other-than-temporary impairment recognized in earnings	'	'	'	'	'
Fair value of total securities available-for-sale	43,312,000	'	43,312,000	'	61,513,000
Variable rate non-agency CMOs	'	'	'	'	'
Credit related other-than-temporary impairment recognized in earnings	'	'	'	'	'
Fair value of total securities available-for-sale	33,800,000	'	33,800,000	'	'
Number of other-than-temporarily impaired securities	1	'	1	'	'
Fair value of other-than-temporarily impaired securities	6,000,000	'	6,000,000	'	'
Credit Impairment losses recognized in earnings on other-than-temporarily impaired securities	100,000	39,000	300,000	200,000	'
Other-than-temporary impairment recognized in AOCI	0	'	0	'	'
Fixed rate non-agency CMOs	'	'	'	'	'
Credit related other-than-temporary impairment recognized in earnings	'	'	'	'	'
Fair value of total securities available-for-sale	9,500,000	'	9,500,000	'	'
Fair value of other-than-temporarily impaired securities	$0	'	$0	'	'

Securities_Details_4

Securities (Details 4) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	$3,655,789,000	$1,940,958,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	79,709,000	6,543,000
Securities available-for-sale, Fair Value, 12 months or greater	166,609,000	55,943,000
Securities available-for-sale, Estimated Unrealized Loss, 12 months or greater	8,700,000	8,001,000
Securities available-for-sale, Fair Value, Total	3,822,398,000	1,996,901,000
Securities available-for-sale, Estimated Unrealized Loss, Total	88,409,000	14,544,000
Securities held-to-maturity	'	'
Securities held-to-maturity, Fair Value, Less than 12 months	1,173,032,000	156,856,000
Securities held-to-maturity, Estimated Unrealized Loss, Less than 12 months	47,042,000	1,421,000
Securities held-to-maturity, Fair Value, Total	1,173,032,000	156,856,000
Securities held-to-maturity, Estimated Unrealized Loss, Total	47,042,000	1,421,000
Gross Unrealized Losses	47,042,000	1,421,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	88,409,000	14,544,000
Other information	'	'
Fair value securities, having non-credit impairment recognized in AOCI	'	16,200,000
Temporarily impaired securities	'	1,980,000,000
U.S. Treasury	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	'	5,096,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	'	3,000
Securities available-for-sale, Fair Value, Total	'	5,096,000
Securities available-for-sale, Estimated Unrealized Loss, Total	'	3,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	'	3,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	'	2
Federal agency - Debt	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	611,954,000	346,136,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	5,650,000	203,000
Securities available-for-sale, Fair Value, Total	611,954,000	346,136,000
Securities available-for-sale, Estimated Unrealized Loss, Total	5,650,000	203,000
Securities held-to-maturity	'	'
Securities held-to-maturity, Fair Value, Less than 12 months	128,715,000	'
Securities held-to-maturity, Estimated Unrealized Loss, Less than 12 months	4,305,000	'
Securities held-to-maturity, Fair Value, Total	128,715,000	'
Securities held-to-maturity, Estimated Unrealized Loss, Total	4,305,000	'
Gross Unrealized Losses	4,305,000	'
Securities available-for-sale:	'	'
Gross Unrealized Losses	5,650,000	203,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	32	8
Federal agency - MBS	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	45,176,000	50,932,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	2,226,000	69,000
Securities available-for-sale, Fair Value, 12 months or greater	45,000	46,000
Securities available-for-sale, Fair Value, Total	45,221,000	50,978,000
Securities available-for-sale, Estimated Unrealized Loss, Total	2,226,000	69,000
Securities held-to-maturity	'	'
Securities held-to-maturity, Fair Value, Less than 12 months	231,160,000	31,514,000
Securities held-to-maturity, Estimated Unrealized Loss, Less than 12 months	9,753,000	182,000
Securities held-to-maturity, Fair Value, Total	231,160,000	31,514,000
Securities held-to-maturity, Estimated Unrealized Loss, Total	9,753,000	182,000
Gross Unrealized Losses	9,753,000	182,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	2,226,000	69,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	26	7
CMOs - Federal agency	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	2,774,796,000	1,413,367,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	69,757,000	5,994,000
Securities available-for-sale, Fair Value, 12 months or greater	96,544,000	13,565,000
Securities available-for-sale, Estimated Unrealized Loss, 12 months or greater	1,813,000	44,000
Securities available-for-sale, Fair Value, Total	2,871,340,000	1,426,932,000
Securities available-for-sale, Estimated Unrealized Loss, Total	71,570,000	6,038,000
Securities held-to-maturity	'	'
Securities held-to-maturity, Fair Value, Less than 12 months	583,595,000	60,998,000
Securities held-to-maturity, Estimated Unrealized Loss, Less than 12 months	18,158,000	382,000
Securities held-to-maturity, Fair Value, Total	583,595,000	60,998,000
Securities held-to-maturity, Estimated Unrealized Loss, Total	18,158,000	382,000
Gross Unrealized Losses	18,158,000	382,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	71,570,000	6,038,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	161	53
CMOs - Non-agency	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	14,620,000	'
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	517,000	'
Securities available-for-sale, Fair Value, 12 months or greater	8,432,000	25,484,000
Securities available-for-sale, Estimated Unrealized Loss, 12 months or greater	868,000	2,124,000
Securities available-for-sale, Fair Value, Total	23,052,000	25,484,000
Securities available-for-sale, Estimated Unrealized Loss, Total	1,385,000	2,124,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	1,385,000	2,124,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	6	4
State and municipal	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	90,545,000	85,550,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	328,000	225,000
Securities available-for-sale, Fair Value, 12 months or greater	46,216,000	810,000
Securities available-for-sale, Estimated Unrealized Loss, 12 months or greater	1,009,000	14,000
Securities available-for-sale, Fair Value, Total	136,761,000	86,360,000
Securities available-for-sale, Estimated Unrealized Loss, Total	1,337,000	239,000
Securities held-to-maturity	'	'
Securities held-to-maturity, Fair Value, Less than 12 months	229,562,000	64,344,000
Securities held-to-maturity, Estimated Unrealized Loss, Less than 12 months	14,826,000	857,000
Securities held-to-maturity, Fair Value, Total	229,562,000	64,344,000
Securities held-to-maturity, Estimated Unrealized Loss, Total	14,826,000	857,000
Gross Unrealized Losses	14,826,000	857,000
Securities available-for-sale:	'	'
Gross Unrealized Losses	1,337,000	239,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	454	152
Other debt securities	'	'
Securities available-for-sale:	'	'
Securities available-for-sale, Fair Value, Less than 12 months	118,698,000	39,877,000
Securities available-for-sale, Estimated Unrealized Loss, Less than 12 months	1,231,000	49,000
Securities available-for-sale, Fair Value, 12 months or greater	15,372,000	16,038,000
Securities available-for-sale, Estimated Unrealized Loss, 12 months or greater	5,010,000	5,819,000
Securities available-for-sale, Fair Value, Total	134,070,000	55,915,000
Securities available-for-sale, Estimated Unrealized Loss, Total	6,241,000	5,868,000
Securities held-to-maturity	'	'
Number of highly rated corporate debt and collateralized bond obligations	1	'
Securities available-for-sale:	'	'
Gross Unrealized Losses	6,241,000	5,868,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	9	5
Total debt securities	'	'
Securities available-for-sale:	'	'
Gross Unrealized Losses	88,409,000	14,544,000
Other information	'	'
Number of available-for-sale and held-to-maturity securities in the unrealized loss position	688	231
Collateralized debt obligations	'	'
Securities available-for-sale:	'	'
Gross Unrealized Losses	$5,000,000	'

Other_Investments_Details

Other Investments (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
FHLB and FRB Stock	'	'	'	'	'
Investment in FRB and FHLB stock	$71,800,000	'	$71,800,000	'	$90,000,000
Private Equity and Alternative Investments	'	'	'	'	'
Investments carried at cost	36,270,000	'	36,270,000	'	36,091,000
Recognized impairment losses on cost method investments	100,000	2,500,000	500,000	2,900,000	'
Private equity and venture capital	'	'	'	'	'
Private Equity and Alternative Investments	'	'	'	'	'
Investments carried at cost	20,862,000	'	20,862,000	'	20,693,000
Private equity and venture capital | Fair Value | Nonrecurring	'	'	'	'	'
Alternative Investments Measured at Fair Value on a Nonrecurring Basis	'	'	'	'	'
Fair Value	919,000	'	919,000	'	'
Unfunded Commitments	179,000	'	179,000	'	'
Real estate	'	'	'	'	'
Private Equity and Alternative Investments	'	'	'	'	'
Investments carried at cost	8,108,000	'	8,108,000	'	9,223,000
Hedge	'	'	'	'	'
Private Equity and Alternative Investments	'	'	'	'	'
Investments carried at cost	2,733,000	'	2,733,000	'	2,866,000
Other	'	'	'	'	'
Private Equity and Alternative Investments	'	'	'	'	'
Investments carried at cost	$4,567,000	'	$4,567,000	'	$3,309,000

Loans_Allowance_for_Loan_and_L2

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details) (USD $)

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Jun. 30, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Dec. 31, 2011

Sep. 30, 2013

Dec. 31, 2012

Imperial Capital Bank

Imperial Capital Bank

1st Pacific Bank of California

1st Pacific Bank of California

Sun West Bank

Sun West Bank

Nevada Commerce Bank

Nevada Commerce Bank

Commercial

Commercial

Commercial

Commercial

Commercial

Commercial

Commercial real estate mortgages

Commercial real estate mortgages

Commercial real estate mortgages

Commercial real estate mortgages

Commercial real estate mortgages

Commercial real estate mortgages

Residential mortgage

Residential mortgage

Residential mortgage

Residential mortgage

Residential mortgage

Residential mortgage

Real estate construction

Real estate construction

Real estate construction

Real estate construction

Real estate construction

Real estate construction

Home equity loans and lines of credit

Home equity loans and lines of credit

Home equity loans and lines of credit

Home equity loans and lines of credit

Home equity loans and lines of credit

Home equity loans and lines of credit

Installment loan

Installment loan

Installment loan

Installment loan

Installment loan

Installment loan

Lease financing

Lease financing

Imperial Capital Bank

1st Pacific Bank of California

Sun West Bank

Nevada Commerce Bank

Accounts notes and loans receivable

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'

Loans and leases, excluding covered loans

$16,566,133,000

'

$14,818,295,000

$13,724,651,000

'

'

'

'

'

'

'

'

'

'

$7,126,158,000

$6,211,353,000

'

'

'

'

$3,077,183,000

'

$2,739,284,000

$2,436,218,000

'

'

$4,418,231,000

'

$3,962,205,000

$3,897,690,000

'

'

$380,489,000

'

$313,190,000

$269,583,000

'

'

$681,879,000

'

$711,750,000

$718,966,000

'

'

$152,107,000

'

$142,793,000

$137,632,000

'

'

$730,086,000

$737,720,000

Less: Allowance for loan and lease losses

-295,947,000

-289,914,000

-277,888,000

-268,440,000

-269,534,000

-262,557,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

-49,926,000

-53,339,000

-48,901,000

-48,176,000

-49,715,000

-48,451,000

-13,114,000

-8,004,000

-10,558,000

-13,282,000

-12,490,000

-14,122,000

-9,691,000

-8,335,000

-11,784,000

-14,017,000

-14,810,000

-20,155,000

-8,298,000

-5,400,000

-7,283,000

-7,671,000

-7,656,000

-8,077,000

-1,872,000

-1,355,000

-1,858,000

-1,914,000

-1,774,000

-1,972,000

'

'

Loans and leases, excluding covered loans, net

16,270,186,000

'

14,540,407,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Covered loans

780,072,000

'

1,031,004,000

'

'

'

680,427,000

893,031,000

45,123,000

70,240,000

25,948,000

34,803,000

28,574,000

32,930,000

10,015,000

10,561,000

'

'

'

'

719,207,000

'

931,758,000

'

'

'

5,030,000

'

5,652,000

'

'

'

41,625,000

'

78,554,000

'

'

'

3,672,000

'

3,790,000

'

'

'

523,000

'

689,000

'

'

'

'

'

Less: Allowance for loan losses

-25,882,000

-24,414,000

-44,781,000

-44,978,000

-43,147,000

-64,565,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Covered loans, net

754,190,000

'

986,223,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total loans and leases

17,346,205,000

'

15,849,299,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net loans and leases

17,024,376,000

'

15,526,630,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized fees, net of deferred costs

$2,400,000

'

$5,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sharing of recoveries with FDIC on expiration date (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

80.00%

80.00%

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sharing of recoveries with FDIC on termination date (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

80.00%

80.00%

80.00%

80.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans_Allowance_for_Loan_and_L3

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 2) (Credit Risk)	9 Months Ended
	Sep. 30, 2013
Concentrations of credit risk	'
Number of states with largest concentration by loan type	5
Total loans outstanding | Noncovered loans | California	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	77.00%
Total loans outstanding | Noncovered loans | New York	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	8.00%
Total loans outstanding | Noncovered loans | Nevada	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	2.00%
Total loans outstanding | Noncovered loans | Other states	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	13.00%
Total loans outstanding | Covered loans | California	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	36.00%
Total loans outstanding | Covered loans | Nevada	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	8.00%
Total loans outstanding | Covered loans | Texas	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	11.00%
Total loans outstanding | Covered loans | Arizona	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	5.00%
Total loans outstanding | Covered loans | Other states	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	35.00%
Total loans outstanding | Covered loans | Ohio	'
Concentrations of credit risk	'
Percent of total loans outstanding (as a percent)	5.00%

Loans_Allowance_for_Loan_and_L4

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 3) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Acquired loans	'	'	'
FDIC indemnification asset	$101,124	'	$150,018
Changes in Accretable Yield for Acquired Impaired Loans	'	'	'
Balance at the beginning of the period	295,813	436,374	'
Accretion	-48,424	-62,189	'
Reclassifications from (to) nonaccretable yield	26,990	-4,042	'
Disposals and other	-41,930	-51,854	'
Balance at the end of the period	$232,449	$318,289	'

Loans_Allowance_for_Loan_and_L5

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 4) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	$289,914,000	$269,534,000	$277,888,000	$262,557,000	'
Provision (reduction) for credit losses, net of transfers	-749,000	1,091,000	-1,036,000	837,000	'
Charge-offs	-2,001,000	-14,124,000	-7,110,000	-37,838,000	'
Recoveries	8,783,000	11,939,000	26,205,000	42,884,000	'
Net recoveries (charge-offs)	6,782,000	-2,185,000	19,095,000	5,046,000	'
Ending Balance	295,947,000	268,440,000	295,947,000	268,440,000	'
Allowance individually evaluated for impairment	1,178,000	4,831,000	1,178,000	4,831,000	'
Allowance collectively evaluated for impairment	294,769,000	263,609,000	294,769,000	263,609,000	'
Loans and leases, excluding covered loans	16,566,133,000	13,724,651,000	16,566,133,000	13,724,651,000	14,818,295,000
Loans and leases, individually evaluated for impairment	110,580,000	165,817,000	110,580,000	165,817,000	'
Loans and leases, collectively evaluated for impairment	16,455,553,000	13,558,834,000	16,455,553,000	13,558,834,000	'
Provision for credit losses in the allowance	0	2,000,000	0	3,000,000	'
Transfers to or from reserve for off-balance sheet credit commitments	700,000	900,000	1,000,000	2,200,000	'
Reserve for Off Balance Sheet Credit Commitments	'	'	'	'	'
Balance, beginning of period	25,124,000	24,351,000	24,837,000	23,097,000	'
Transfers from allowance for loan and lease losses	749,000	909,000	1,036,000	2,163,000	'
Balance, end of period	25,873,000	25,260,000	25,873,000	25,260,000	'
Commercial (includes lease financing)	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	116,619,000	93,981,000	104,731,000	83,514,000	'
Provision (reduction) for credit losses, net of transfers	-14,173,000	6,333,000	-7,313,000	3,425,000	'
Charge-offs	-488,000	-12,163,000	-4,719,000	-22,382,000	'
Recoveries	4,863,000	7,227,000	14,122,000	30,821,000	'
Net recoveries (charge-offs)	4,375,000	-4,936,000	9,403,000	8,439,000	'
Ending Balance	106,821,000	95,378,000	106,821,000	95,378,000	'
Allowance individually evaluated for impairment	344,000	1,167,000	344,000	1,167,000	'
Allowance collectively evaluated for impairment	106,477,000	94,211,000	106,477,000	94,211,000	'
Loans and leases, excluding covered loans	7,856,244,000	6,264,562,000	7,856,244,000	6,264,562,000	'
Loans and leases, individually evaluated for impairment	32,727,000	34,731,000	32,727,000	34,731,000	'
Loans and leases, collectively evaluated for impairment	7,823,517,000	6,229,831,000	7,823,517,000	6,229,831,000	'
Commercial real estate mortgages	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	53,339,000	49,715,000	48,901,000	48,451,000	'
Provision (reduction) for credit losses, net of transfers	-2,829,000	-1,298,000	572,000	-481,000	'
Charge-offs	-1,270,000	-444,000	-1,315,000	-1,318,000	'
Recoveries	686,000	203,000	1,768,000	1,524,000	'
Net recoveries (charge-offs)	-584,000	-241,000	453,000	206,000	'
Ending Balance	49,926,000	48,176,000	49,926,000	48,176,000	'
Allowance individually evaluated for impairment	602,000	1,874,000	602,000	1,874,000	'
Allowance collectively evaluated for impairment	49,324,000	46,302,000	49,324,000	46,302,000	'
Loans and leases, excluding covered loans	3,077,183,000	2,436,218,000	3,077,183,000	2,436,218,000	2,739,284,000
Loans and leases, individually evaluated for impairment	38,546,000	58,217,000	38,546,000	58,217,000	'
Loans and leases, collectively evaluated for impairment	3,038,637,000	2,378,001,000	3,038,637,000	2,378,001,000	'
Residential mortgage	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	8,004,000	12,490,000	10,558,000	14,122,000	'
Provision (reduction) for credit losses, net of transfers	5,070,000	1,327,000	2,547,000	732,000	'
Charge-offs	'	-1,030,000	-106,000	-2,333,000	'
Recoveries	40,000	495,000	115,000	761,000	'
Net recoveries (charge-offs)	40,000	-535,000	9,000	-1,572,000	'
Ending Balance	13,114,000	13,282,000	13,114,000	13,282,000	'
Allowance individually evaluated for impairment	232,000	185,000	232,000	185,000	'
Allowance collectively evaluated for impairment	12,882,000	13,097,000	12,882,000	13,097,000	'
Loans and leases, excluding covered loans	4,418,231,000	3,897,690,000	4,418,231,000	3,897,690,000	3,962,205,000
Loans and leases, individually evaluated for impairment	6,767,000	11,342,000	6,767,000	11,342,000	'
Loans and leases, collectively evaluated for impairment	4,411,464,000	3,886,348,000	4,411,464,000	3,886,348,000	'
Real estate construction	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	8,335,000	14,810,000	11,784,000	20,155,000	'
Provision (reduction) for credit losses, net of transfers	-1,589,000	-3,898,000	-10,386,000	-4,508,000	'
Charge-offs	'	-310,000	-100,000	-9,769,000	'
Recoveries	2,945,000	3,415,000	8,393,000	8,139,000	'
Net recoveries (charge-offs)	2,945,000	3,105,000	8,293,000	-1,630,000	'
Ending Balance	9,691,000	14,017,000	9,691,000	14,017,000	'
Allowance individually evaluated for impairment	'	1,467,000	'	1,467,000	'
Allowance collectively evaluated for impairment	9,691,000	12,550,000	9,691,000	12,550,000	'
Loans and leases, excluding covered loans	380,489,000	269,583,000	380,489,000	269,583,000	313,190,000
Loans and leases, individually evaluated for impairment	30,190,000	56,582,000	30,190,000	56,582,000	'
Loans and leases, collectively evaluated for impairment	350,299,000	213,001,000	350,299,000	213,001,000	'
Home Equity Loans and Lines of Credit	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	5,400,000	7,656,000	7,283,000	8,077,000	'
Provision (reduction) for credit losses, net of transfers	3,092,000	47,000	946,000	588,000	'
Charge-offs	-225,000	-43,000	-500,000	-1,077,000	'
Recoveries	31,000	11,000	569,000	83,000	'
Net recoveries (charge-offs)	-194,000	-32,000	69,000	-994,000	'
Ending Balance	8,298,000	7,671,000	8,298,000	7,671,000	'
Allowance individually evaluated for impairment	'	138,000	'	138,000	'
Allowance collectively evaluated for impairment	8,298,000	7,533,000	8,298,000	7,533,000	'
Loans and leases, excluding covered loans	681,879,000	718,966,000	681,879,000	718,966,000	711,750,000
Loans and leases, individually evaluated for impairment	2,350,000	4,496,000	2,350,000	4,496,000	'
Loans and leases, collectively evaluated for impairment	679,529,000	714,470,000	679,529,000	714,470,000	'
Installment loan	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	1,355,000	1,774,000	1,858,000	1,972,000	'
Provision (reduction) for credit losses, net of transfers	317,000	-314,000	-854,000	-655,000	'
Charge-offs	-18,000	-134,000	-370,000	-959,000	'
Recoveries	218,000	588,000	1,238,000	1,556,000	'
Net recoveries (charge-offs)	200,000	454,000	868,000	597,000	'
Ending Balance	1,872,000	1,914,000	1,872,000	1,914,000	'
Allowance collectively evaluated for impairment	1,872,000	1,914,000	1,872,000	1,914,000	'
Loans and leases, excluding covered loans	152,107,000	137,632,000	152,107,000	137,632,000	142,793,000
Loans and leases, individually evaluated for impairment	'	449,000	'	449,000	'
Loans and leases, collectively evaluated for impairment	152,107,000	137,183,000	152,107,000	137,183,000	'
Unallocated	'	'	'	'	'
Allowance for Loan and Lease Losses	'	'	'	'	'
Beginning Balance	96,862,000	89,108,000	92,773,000	86,266,000	'
Provision (reduction) for credit losses, net of transfers	9,363,000	-1,106,000	13,452,000	1,736,000	'
Ending Balance	106,225,000	88,002,000	106,225,000	88,002,000	'
Allowance collectively evaluated for impairment	$106,225,000	$88,002,000	$106,225,000	$88,002,000	'

Loans_Allowance_for_Loan_and_L6

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 5) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Jul. 02, 2012	Jun. 30, 2012
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	$95,999,000	$129,357,000	$95,999,000	$129,357,000	$119,511,000	'	'
With an allowance recorded	14,581,000	36,460,000	14,581,000	36,460,000	19,081,000	'	'
Total impaired loans	110,580,000	165,817,000	110,580,000	165,817,000	138,592,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	120,346,000	166,059,000	120,346,000	166,059,000	162,309,000	'	'
With an allowance recorded	16,666,000	49,464,000	16,666,000	49,464,000	20,293,000	'	'
Total impaired loans	137,012,000	215,523,000	137,012,000	215,523,000	182,602,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	1,178,000	4,831,000	1,178,000	4,831,000	2,403,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	95,042,000	129,856,000	99,915,000	115,537,000	'	'	'
With an allowance recorded	19,513,000	39,944,000	22,970,000	44,281,000	'	'	'
Total impaired loans	114,555,000	169,800,000	122,885,000	159,818,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	1,617,000	323,000	4,116,000	728,000	'	'	'
With an allowance recorded	215,000	4,000	1,142,000	4,000	'	'	'
Total impaired loans	1,832,000	327,000	5,258,000	732,000	'	'	'
Minimum limit for nonperforming loans to be individually evaluated for impairment	'	'	'	'	'	1,000,000	500,000
Minimum limit for measuring impairment at the relationship level for borrowers with multiple loans exceeding $1,000,000	'	'	'	'	'	1,000,000	'
Outstanding loan amount of previously reported impaired loans under $1,000,000	6,100,000	'	6,100,000	'	'	'	'
Commercial	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	25,233,000	28,575,000	25,233,000	28,575,000	18,761,000	'	'
With an allowance recorded	7,494,000	6,156,000	7,494,000	6,156,000	7,516,000	'	'
Total impaired loans	32,727,000	34,731,000	32,727,000	34,731,000	26,277,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	25,488,000	39,624,000	25,488,000	39,624,000	24,135,000	'	'
With an allowance recorded	9,168,000	6,922,000	9,168,000	6,922,000	8,038,000	'	'
Total impaired loans	34,656,000	46,546,000	34,656,000	46,546,000	32,173,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	344,000	1,167,000	344,000	1,167,000	952,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	26,255,000	30,476,000	22,584,000	24,732,000	'	'	'
With an allowance recorded	7,567,000	8,461,000	7,556,000	11,286,000	'	'	'
Total impaired loans	33,822,000	38,937,000	30,140,000	36,018,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	593,000	'	1,440,000	'	'	'	'
With an allowance recorded	156,000	'	513,000	'	'	'	'
Total impaired loans	749,000	'	1,953,000	'	'	'	'
Commercial real estate mortgages	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	33,133,000	40,825,000	33,133,000	40,825,000	42,882,000	'	'
With an allowance recorded	5,413,000	17,392,000	5,413,000	17,392,000	10,203,000	'	'
Total impaired loans	38,546,000	58,217,000	38,546,000	58,217,000	53,085,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	37,754,000	46,081,000	37,754,000	46,081,000	49,110,000	'	'
With an allowance recorded	5,810,000	18,962,000	5,810,000	18,962,000	10,783,000	'	'
Total impaired loans	43,564,000	65,043,000	43,564,000	65,043,000	59,893,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	602,000	1,874,000	602,000	1,874,000	1,326,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	29,977,000	34,597,000	33,060,000	25,767,000	'	'	'
With an allowance recorded	10,262,000	17,257,000	11,018,000	13,406,000	'	'	'
Total impaired loans	40,239,000	51,854,000	44,078,000	39,173,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	440,000	34,000	1,102,000	158,000	'	'	'
With an allowance recorded	45,000	'	361,000	'	'	'	'
Total impaired loans	485,000	34,000	1,463,000	158,000	'	'	'
Residential mortgage	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	5,093,000	7,727,000	5,093,000	7,727,000	8,347,000	'	'
With an allowance recorded	1,674,000	3,615,000	1,674,000	3,615,000	463,000	'	'
Total impaired loans	6,767,000	11,342,000	6,767,000	11,342,000	8,810,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	5,573,000	8,581,000	5,573,000	8,581,000	9,194,000	'	'
With an allowance recorded	1,688,000	3,812,000	1,688,000	3,812,000	507,000	'	'
Total impaired loans	7,261,000	12,393,000	7,261,000	12,393,000	9,701,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	232,000	185,000	232,000	185,000	9,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	5,689,000	7,907,000	6,922,000	8,057,000	'	'	'
With an allowance recorded	1,684,000	4,581,000	958,000	3,723,000	'	'	'
Total impaired loans	7,373,000	12,488,000	7,880,000	11,780,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	80,000	9,000	191,000	48,000	'	'	'
With an allowance recorded	14,000	4,000	55,000	4,000	'	'	'
Total impaired loans	94,000	13,000	246,000	52,000	'	'	'
Fixed	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	2,031,000	4,199,000	2,031,000	4,199,000	3,482,000	'	'
With an allowance recorded	'	2,229,000	'	2,229,000	463,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	2,155,000	4,613,000	2,155,000	4,613,000	3,757,000	'	'
With an allowance recorded	'	2,336,000	'	2,336,000	507,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	'	181,000	'	181,000	9,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	2,019,000	3,014,000	2,860,000	3,047,000	'	'	'
With an allowance recorded	'	2,260,000	116,000	1,844,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	33,000	'	75,000	'	'	'	'
Variable	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	3,062,000	3,528,000	3,062,000	3,528,000	4,865,000	'	'
With an allowance recorded	1,674,000	1,386,000	1,674,000	1,386,000	'	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	3,418,000	3,968,000	3,418,000	3,968,000	5,437,000	'	'
With an allowance recorded	1,688,000	1,476,000	1,688,000	1,476,000	'	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	232,000	4,000	232,000	4,000	'	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	3,670,000	4,893,000	4,062,000	5,010,000	'	'	'
With an allowance recorded	1,684,000	2,321,000	842,000	1,879,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	47,000	9,000	116,000	48,000	'	'	'
With an allowance recorded	14,000	4,000	55,000	4,000	'	'	'
Real estate construction	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	30,190,000	48,484,000	30,190,000	48,484,000	45,510,000	'	'
With an allowance recorded	'	8,098,000	'	8,098,000	'	'	'
Total impaired loans	30,190,000	56,582,000	30,190,000	56,582,000	45,510,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	48,156,000	66,476,000	48,156,000	66,476,000	74,283,000	'	'
With an allowance recorded	'	18,362,000	'	18,362,000	'	'	'
Total impaired loans	48,156,000	84,838,000	48,156,000	84,838,000	74,283,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	'	1,467,000	'	1,467,000	'	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	30,318,000	53,124,000	34,410,000	51,952,000	'	'	'
With an allowance recorded	'	8,432,000	3,213,000	14,700,000	'	'	'
Total impaired loans	30,318,000	61,556,000	37,623,000	66,652,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	457,000	280,000	1,302,000	522,000	'	'	'
With an allowance recorded	'	'	213,000	'	'	'	'
Total impaired loans	457,000	280,000	1,515,000	522,000	'	'	'
Construction	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	16,259,000	29,446,000	16,259,000	29,446,000	19,762,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	21,064,000	42,870,000	21,064,000	42,870,000	33,267,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	16,262,000	34,137,000	17,904,000	29,189,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	233,000	245,000	791,000	487,000	'	'	'
Land	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	13,931,000	19,038,000	13,931,000	19,038,000	25,748,000	'	'
With an allowance recorded	'	8,098,000	'	8,098,000	'	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	27,092,000	23,606,000	27,092,000	23,606,000	41,016,000	'	'
With an allowance recorded	'	18,362,000	'	18,362,000	'	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	'	1,467,000	'	1,467,000	'	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	14,056,000	18,987,000	16,506,000	22,763,000	'	'	'
With an allowance recorded	'	8,432,000	3,213,000	14,700,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	224,000	35,000	511,000	35,000	'	'	'
With an allowance recorded	'	'	213,000	'	'	'	'
Home equity loans and lines of credit	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	2,350,000	3,297,000	2,350,000	3,297,000	3,562,000	'	'
With an allowance recorded	'	1,199,000	'	1,199,000	899,000	'	'
Total impaired loans	2,350,000	4,496,000	2,350,000	4,496,000	4,461,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	3,375,000	4,370,000	3,375,000	4,370,000	4,660,000	'	'
With an allowance recorded	'	1,406,000	'	1,406,000	965,000	'	'
Total impaired loans	3,375,000	5,776,000	3,375,000	5,776,000	5,625,000	'	'
Related Allowance	'	'	'	'	'	'	'
Total impaired loans	'	138,000	'	138,000	116,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	2,803,000	3,252,000	2,827,000	4,470,000	'	'	'
With an allowance recorded	'	1,213,000	225,000	1,166,000	'	'	'
Total impaired loans	2,803,000	4,465,000	3,052,000	5,636,000	'	'	'
Interest Income Recognized	'	'	'	'	'	'	'
With no related allowance recorded	47,000	'	81,000	'	'	'	'
Total impaired loans	47,000	'	81,000	'	'	'	'
Installment loan	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	'	449,000	'	449,000	449,000	'	'
Total impaired loans	'	449,000	'	449,000	449,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	'	927,000	'	927,000	927,000	'	'
Total impaired loans	'	927,000	'	927,000	927,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	'	500,000	112,000	552,000	'	'	'
Total impaired loans	'	500,000	112,000	552,000	'	'	'
Consumer Installment loan	'	'	'	'	'	'	'
Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	'	449,000	'	449,000	449,000	'	'
Unpaid Contractual Principal Balance	'	'	'	'	'	'	'
With no related allowance recorded	'	927,000	'	927,000	927,000	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	'	500,000	112,000	552,000	'	'	'
Lease financing	'	'	'	'	'	'	'
Average Recorded Investment	'	'	'	'	'	'	'
With no related allowance recorded	'	'	'	7,000	'	'	'
Total impaired loans	'	'	'	$7,000	'	'	'

Loans_Allowance_for_Loan_and_L7

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 6) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2012

Total Troubled Debt Restructured Loans

Total Troubled Debt Restructured Loans

Total Troubled Debt Restructured Loans

Total Troubled Debt Restructured Loans

Commercial

Commercial

Commercial

Commercial

Commercial real estate mortgages

Commercial real estate mortgages

Home equity loans and lines of credit

Home equity loans and lines of credit

Home equity loans and lines of credit

Fixed

Fixed

Real estate construction

Construction

Land

Land

item

item

item

item

item

item

item

item

item

item

item

item

item

item

item

item

item

item

item

Financing Receivable, Impaired

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impaired restructured loans on accrual status

$52,500,000

$48,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

TDR loans

69,300,000

94,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Specific Reserves

900,000

1,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of Contracts

'

'

2

11

14

26

2

6

12

15

1

2

1

1

1

3

4

4

3

1

1

Pre-Modification Outstanding Principal

'

'

7,575,000

11,879,000

17,150,000

78,384,000

7,575,000

1,624,000

16,258,000

36,785,000

547,000

15,832,000

257,000

345,000

257,000

1,578,000

2,233,000

23,277,000

14,857,000

8,420,000

8,420,000

Period-End Outstanding Principal

'

'

7,486,000

10,863,000

14,157,000

63,123,000

7,486,000

1,538,000

13,624,000

23,219,000

533,000

16,353,000

149,000

'

149,000

1,078,000

1,078,000

22,324,000

14,226,000

8,098,000

8,098,000

Financial Effects

'

'

$344,000

$11,277,000

$344,000

$11,277,000

$344,000

$10,528,000

$344,000

$10,528,000

'

'

'

'

'

$485,000

$485,000

$264,000

'

$264,000

$264,000

Loans_Allowance_for_Loan_and_L8

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 7) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	item	item	item
Troubled debt restructured loans	'	'	'
Removal of TDR loans that are nonreportable as TDR	'	$15,300,000	'
Additions to TDR loans	'	17,200,000	'
Number of notes into which an original note is separated	'	2	'
Commitments to lend additional funds on restructured loans	'	1,300,000	'
Total Troubled Debt Restructured Loans That Subsequently Defaulted	'	'	'
Troubled debt restructured loans	'	'	'
Number of contracts	1	6	7
Period-End Outstanding Principal	688,000	8,279,000	5,953,000
Period-End Specific Reserve	'	'	277,000
Commercial	'	'	'
Troubled debt restructured loans	'	'	'
Number of contracts	1	4	5
Period-End Outstanding Principal	688,000	896,000	4,581,000
Period-End Specific Reserve	'	'	277,000
Land	'	'	'
Troubled debt restructured loans	'	'	'
Number of contracts	'	1	2
Period-End Outstanding Principal	'	7,244,000	1,372,000
Home equity loans and lines of credit	'	'	'
Troubled debt restructured loans	'	'	'
Number of contracts	'	1	'
Period-End Outstanding Principal	'	$139,000	'

Loans_Allowance_for_Loan_and_L9

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 8) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
In Thousands, unless otherwise specified
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	$10,981	$29,273	'
60-89 Days Past Due	4,589	10,813	'
Greater Than 90 Days and Accruing	383	981	'
Nonaccrual	69,602	99,787	'
Total Past Due and Nonaccrual Loans	85,555	140,854	'
Current	16,480,578	14,677,441	'
Total Loans and Leases	16,566,133	14,818,295	13,724,651
Commercial	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	8,052	6,207	'
60-89 Days Past Due	964	4,219	'
Greater Than 90 Days and Accruing	3	602	'
Nonaccrual	10,073	9,087	'
Total Past Due and Nonaccrual Loans	19,092	20,115	'
Current	7,107,066	6,191,238	'
Total Loans and Leases	7,126,158	6,211,353	'
Commercial real estate mortgages	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	2,631	16,968	'
60-89 Days Past Due	'	3,249	'
Nonaccrual	19,020	33,198	'
Total Past Due and Nonaccrual Loans	21,651	53,415	'
Current	3,055,532	2,685,869	'
Total Loans and Leases	3,077,183	2,739,284	2,436,218
Residential mortgage	'	'	'
Past Due Loans and Leases	'	'	'
60-89 Days Past Due	3,613	1,969	'
Greater Than 90 Days and Accruing	379	379	'
Nonaccrual	9,674	9,603	'
Total Past Due and Nonaccrual Loans	13,666	11,951	'
Current	4,404,565	3,950,254	'
Total Loans and Leases	4,418,231	3,962,205	3,897,690
Fixed	'	'	'
Past Due Loans and Leases	'	'	'
60-89 Days Past Due	1,238	1,969	'
Greater Than 90 Days and Accruing	379	379	'
Nonaccrual	3,901	4,902	'
Total Past Due and Nonaccrual Loans	5,518	7,250	'
Current	1,457,866	1,458,224	'
Total Loans and Leases	1,463,384	1,465,474	'
Variable	'	'	'
Past Due Loans and Leases	'	'	'
60-89 Days Past Due	2,375	'	'
Nonaccrual	5,773	4,701	'
Total Past Due and Nonaccrual Loans	8,148	4,701	'
Current	2,946,699	2,492,030	'
Total Loans and Leases	2,954,847	2,496,731	'
Real estate construction	'	'	'
Past Due Loans and Leases	'	'	'
60-89 Days Past Due	'	859	'
Nonaccrual	25,471	40,882	'
Total Past Due and Nonaccrual Loans	25,471	41,741	'
Current	355,018	271,449	'
Total Loans and Leases	380,489	313,190	269,583
Construction	'	'	'
Past Due Loans and Leases	'	'	'
Nonaccrual	11,553	15,067	'
Total Past Due and Nonaccrual Loans	11,553	15,067	'
Current	339,138	239,740	'
Total Loans and Leases	350,691	254,807	'
Land	'	'	'
Past Due Loans and Leases	'	'	'
60-89 Days Past Due	'	859	'
Nonaccrual	13,918	25,815	'
Total Past Due and Nonaccrual Loans	13,918	26,674	'
Current	15,880	31,709	'
Total Loans and Leases	29,798	58,383	'
Home equity loans and lines of credit	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	274	3,407	'
60-89 Days Past Due	'	480	'
Nonaccrual	5,289	6,424	'
Total Past Due and Nonaccrual Loans	5,563	10,311	'
Current	676,316	701,439	'
Total Loans and Leases	681,879	711,750	718,966
Installment loan	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	24	58	'
60-89 Days Past Due	'	35	'
Nonaccrual	21	473	'
Total Past Due and Nonaccrual Loans	45	566	'
Current	152,062	142,227	'
Total Loans and Leases	152,107	142,793	137,632
Commercial Installment loan	'	'	'
Past Due Loans and Leases	'	'	'
Current	379	437	'
Total Loans and Leases	379	437	'
Consumer Installment loan	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	24	58	'
60-89 Days Past Due	'	35	'
Nonaccrual	21	473	'
Total Past Due and Nonaccrual Loans	45	566	'
Current	151,683	141,790	'
Total Loans and Leases	151,728	142,356	'
Lease financing	'	'	'
Past Due Loans and Leases	'	'	'
30-59 Days Past Due	'	2,633	'
60-89 Days Past Due	12	2	'
Greater Than 90 Days and Accruing	1	'	'
Nonaccrual	54	120	'
Total Past Due and Nonaccrual Loans	67	2,755	'
Current	730,019	734,965	'
Total Loans and Leases	$730,086	$737,720	'

Recovered_Sheet1

Loans, Allowance for Loan and Lease Losses, and Reserve for Off-Balance Sheet Credit Commitments (Details 9) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	$16,566,133,000	$13,724,651,000	$16,566,133,000	$13,724,651,000	$14,818,295,000
Covered Loans Allowance	'	'	'	'	'
Balance, beginning of period	24,414,000	43,147,000	44,781,000	64,565,000	'
Provision for losses	2,496,000	18,089,000	461,000	38,848,000	'
Reduction in allowance due to loan removals	-1,028,000	-16,258,000	-19,360,000	-58,435,000	'
Balance, end of period	25,882,000	44,978,000	25,882,000	44,978,000	'
Loans on nonaccrual status	69,602,000	'	69,602,000	'	99,787,000
Loans 90 days or more past due on accrual status	383,000	'	383,000	'	981,000
Covered loans	'	'	'	'	'
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	0	'	0	'	0
Covered loans 30 to 89 days delinquent	6,400,000	'	6,400,000	'	43,400,000
Loans 90 days or more past due on accrual status	63,100,000	'	63,100,000	'	112,400,000
Commercial	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	7,126,158,000	'	7,126,158,000	'	6,211,353,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	10,073,000	'	10,073,000	'	9,087,000
Loans 90 days or more past due on accrual status	3,000	'	3,000	'	602,000
Commercial real estate mortgages	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	3,077,183,000	2,436,218,000	3,077,183,000	2,436,218,000	2,739,284,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	19,020,000	'	19,020,000	'	33,198,000
Residential mortgage	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	4,418,231,000	3,897,690,000	4,418,231,000	3,897,690,000	3,962,205,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	9,674,000	'	9,674,000	'	9,603,000
Loans 90 days or more past due on accrual status	379,000	'	379,000	'	379,000
Fixed	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	1,463,384,000	'	1,463,384,000	'	1,465,474,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	3,901,000	'	3,901,000	'	4,902,000
Loans 90 days or more past due on accrual status	379,000	'	379,000	'	379,000
Variable	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	2,954,847,000	'	2,954,847,000	'	2,496,731,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	5,773,000	'	5,773,000	'	4,701,000
Real estate construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	380,489,000	269,583,000	380,489,000	269,583,000	313,190,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	25,471,000	'	25,471,000	'	40,882,000
Construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	350,691,000	'	350,691,000	'	254,807,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	11,553,000	'	11,553,000	'	15,067,000
Land	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	29,798,000	'	29,798,000	'	58,383,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	13,918,000	'	13,918,000	'	25,815,000
Home equity loans and lines of credit	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	681,879,000	718,966,000	681,879,000	718,966,000	711,750,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	5,289,000	'	5,289,000	'	6,424,000
Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	152,107,000	137,632,000	152,107,000	137,632,000	142,793,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	21,000	'	21,000	'	473,000
Commercial Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	379,000	'	379,000	'	437,000
Consumer Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	151,728,000	'	151,728,000	'	142,356,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	21,000	'	21,000	'	473,000
Lease financing	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	730,086,000	'	730,086,000	'	737,720,000
Covered Loans Allowance	'	'	'	'	'
Loans on nonaccrual status	54,000	'	54,000	'	120,000
Loans 90 days or more past due on accrual status	1,000	'	1,000	'	'
Nonclassified	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	16,221,212,000	'	16,221,212,000	'	14,415,241,000
Nonclassified | Commercial	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	7,011,906,000	'	7,011,906,000	'	6,073,459,000
Nonclassified | Commercial real estate mortgages	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	2,961,319,000	'	2,961,319,000	'	2,597,863,000
Nonclassified | Residential mortgage	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	4,374,892,000	'	4,374,892,000	'	3,928,719,000
Nonclassified | Fixed	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	1,443,459,000	'	1,443,459,000	'	1,449,270,000
Nonclassified | Variable	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	2,931,433,000	'	2,931,433,000	'	2,479,449,000
Nonclassified | Real estate construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	340,497,000	'	340,497,000	'	254,287,000
Nonclassified | Construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	324,908,000	'	324,908,000	'	225,577,000
Nonclassified | Land	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	15,589,000	'	15,589,000	'	28,710,000
Nonclassified | Home equity loans and lines of credit	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	653,349,000	'	653,349,000	'	685,011,000
Nonclassified | Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	151,749,000	'	151,749,000	'	142,099,000
Nonclassified | Commercial Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	379,000	'	379,000	'	437,000
Nonclassified | Consumer Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	151,370,000	'	151,370,000	'	141,662,000
Nonclassified | Lease financing	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	727,500,000	'	727,500,000	'	733,803,000
Classified	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	344,921,000	'	344,921,000	'	403,054,000
Classified | Commercial	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	114,252,000	'	114,252,000	'	137,894,000
Classified | Commercial real estate mortgages	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	115,864,000	'	115,864,000	'	141,421,000
Classified | Residential mortgage	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	43,339,000	'	43,339,000	'	33,486,000
Classified | Fixed	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	19,925,000	'	19,925,000	'	16,204,000
Classified | Variable	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	23,414,000	'	23,414,000	'	17,282,000
Classified | Real estate construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	39,992,000	'	39,992,000	'	58,903,000
Classified | Construction	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	25,783,000	'	25,783,000	'	29,230,000
Classified | Land	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	14,209,000	'	14,209,000	'	29,673,000
Classified | Home equity loans and lines of credit	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	28,530,000	'	28,530,000	'	26,739,000
Classified | Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	358,000	'	358,000	'	694,000
Classified | Consumer Installment loan	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	358,000	'	358,000	'	694,000
Classified | Lease financing	'	'	'	'	'
Financing Receivable, Recorded Investment	'	'	'	'	'
Loans and leases, excluding covered loans	$2,586,000	'	$2,586,000	'	$3,917,000

Other_Real_Estate_Owned_Detail

Other Real Estate Owned (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
OREO activity	'	'	'	'	'
Balance, beginning of period	$61,477,000	$117,501,000	$79,303,000	$129,340,000	'
Additions	4,008,000	16,474,000	18,637,000	58,202,000	'
Sales	-15,206,000	-18,302,000	-42,149,000	-55,413,000	'
Valuation adjustments	-1,556,000	-5,000,000	-7,068,000	-21,456,000	'
Balance, end of period	48,723,000	110,673,000	48,723,000	110,673,000	'
OREO Valuation Allowances	20,000,000	'	20,000,000	'	33,600,000
Non-Covered OREO	'	'	'	'	'
OREO activity	'	'	'	'	'
Balance, beginning of period	19,676,000	34,667,000	21,027,000	30,790,000	'
Additions	'	1,485,000	723,000	14,177,000	'
Sales	-771,000	-8,364,000	-2,552,000	-12,781,000	'
Valuation adjustments	'	-733,000	-293,000	-5,131,000	'
Balance, end of period	18,905,000	27,055,000	18,905,000	27,055,000	'
FDIC reimbursement (as a percent)	'	'	80.00%	'	'
Payable to FDIC (as a percent)	'	'	80.00%	'	'
Covered OREO	'	'	'	'	'
OREO activity	'	'	'	'	'
Balance, beginning of period	41,801,000	82,834,000	58,276,000	98,550,000	'
Additions	4,008,000	14,989,000	17,914,000	44,025,000	'
Sales	-14,435,000	-9,938,000	-39,597,000	-42,632,000	'
Valuation adjustments	-1,556,000	-4,267,000	-6,775,000	-16,325,000	'
Balance, end of period	$29,818,000	$83,618,000	$29,818,000	$83,618,000	'

Borrowed_Funds_Details

Borrowed Funds (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Short-term borrowings	'	'
Federal funds purchased	'	$1,214,200
Total short-term borrowings	2,588	1,423,798
Long-term debt	'	'
Long-term debt	719,326	706,051
5.125% Senior Notes Due February 2013 | City National Corporation	'	'
Short-term borrowings	'	'
Current portion of senior notes	'	206,581
Long-term debt	'	'
Fixed interest rate (as a percent)	'	5.13%
5.25% Senior Notes Due September 2020 | City National Corporation	'	'
Long-term debt	'	'
Long-term debt	299,444	297,613
Fixed interest rate (as a percent)	5.25%	5.25%
9.00% Subordinated Notes Due July 2019 | City National Bank	'	'
Long-term debt	'	'
Long-term debt	50,000	49,755
Fixed interest rate (as a percent)	9.00%	9.00%
Interest rate for initial period (as a percent)	9.00%	'
Initial interest rate period	'5 years	'
9.00% Subordinated Notes Due July 2019 | City National Bank | LIBOR	'	'
Long-term debt	'	'
Variable rate basis	'LIBOR	'
Basis spread after initial period (as a percent)	6.00%	'
9.00% Subordinated Notes Due July 2019 | City National Bank | Prime rate	'	'
Long-term debt	'	'
Variable rate basis	'Prime rate	'
Basis spread after initial period (as a percent)	5.00%	'
9.00% Subordinated Notes Due August 2019 | City National Bank	'	'
Long-term debt	'	'
Long-term debt	75,000	74,876
Fixed interest rate (as a percent)	9.00%	9.00%
Fixed and Floating Subordinated Notes due August 2019 | City National Bank	'	'
Long-term debt	'	'
Long-term debt	55,000	54,909
Variable rate basis	'three-month LIBOR	'
Frequency to reset interest rate	'Quarterly	'
Interest rate cap (as a percent)	10.00%	'
Interest rate for initial period (as a percent)	9.00%	'
Initial interest rate period	'5 years	'
Basis spread after initial period (as a percent)	6.00%	'
5.375% Subordinated Notes Due July 2022 | City National Bank	'	'
Long-term debt	'	'
Long-term debt	149,993	148,642
Fixed interest rate (as a percent)	5.38%	5.38%
Floating Rate Securities Due November 2034 | Business Bancorp Capital Trust I	'	'
Long-term debt	'	'
Long-term debt	5,155	5,152
Variable rate basis	'three-month LIBOR	'
Frequency to reset interest rate	'Quarterly	'
Basis spread (as a percent)	1.97%	'
Interest rate as of reporting date (as a percent)	2.23%	'
Nonrecourse debt	'	'
Short-term borrowings	'	'
Total short-term borrowings	2,588	3,017
Long-term debt	'	'
Long-term debt	$84,734	$75,104
Average interest rate (as a percent)	3.88%	'

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)

0 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

Nov. 13, 2012

Sep. 30, 2013

Aug. 31, 2013

Jul. 31, 2013

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Dec. 31, 2012

Shareholders' Equity

'

'

'

'

'

'

'

'

'

Percentage of dividend on preferred stock

5.50%

'

'

'

'

'

'

'

'

Preferred stock, liquidation preference per share (in dollars per share)

$1,000

'

'

'

'

'

'

'

'

Components of AOCI

'

'

'

'

'

'

'

'

'

Net unrealized (loss) gain on securities available-for-sale

'

($10,355,000)

'

'

($10,355,000)

'

($10,355,000)

'

$86,526,000

Net unrealized gain on cash flow hedges

'

'

'

'

'

'

'

'

56,000

Total accumulated other comprehensive (loss) income

'

-10,355,000

'

'

-10,355,000

'

-10,355,000

'

86,582,000

Securities available-for-sale:

'

'

'

'

'

'

'

'

'

Net unrealized (losses) gains arising during the period

'

'

'

'

-23,334,000

20,701,000

-155,089,000

37,330,000

'

Reclassification adjustment for net gains included in net income

'

'

'

'

-5,788,000

-48,000

-11,460,000

-459,000

'

Non-credit related impairment loss

'

'

'

'

'

-1,471,000

'

-1,471,000

'

Total securities available for sale

'

'

'

'

-29,122,000

19,182,000

-166,549,000

35,400,000

'

Net change on cash flow hedges

'

'

'

'

'

-42,000

-56,000

-125,000

'

Pension liability adjustment

'

'

'

'

'

'

'

1,085,000

'

Total other comprehensive (loss) income

'

'

'

'

-29,122,000

19,140,000

-166,605,000

36,360,000

'

Components and related tax effects of other comprehensive income

'

'

'

'

'

'

'

'

'

Net unrealized (losses) gains arising during the period

'

'

'

'

-9,761,000

8,659,000

-64,874,000

15,615,000

'

Reclassification adjustment for net gains included in net income, taxes

'

'

'

'

-2,421,000

-20,000

-4,794,000

-192,000

'

Non-credit related impairment loss, taxes

'

'

'

'

'

-615,000

'

-615,000

'

Total securities available for sale

'

'

'

'

-12,182,000

8,024,000

-69,668,000

14,808,000

'

Total other comprehensive (loss) income

'

'

'

'

-12,182,000

8,024,000

-69,668,000

14,808,000

'

Components and related tax effects of other comprehensive income

'

'

'

'

'

'

'

'

'

Net unrealized (losses) gains arising during the period

'

'

'

'

-13,573,000

12,042,000

-90,215,000

21,715,000

'

Reclassification adjustment for net gains/losses included in net income

'

'

'

'

-3,367,000

-28,000

-6,666,000

-267,000

'

Non-credit related impairment loss

'

'

'

'

'

-856,000

'

-856,000

'

Total securities available for sale

'

'

'

'

-16,940,000

11,158,000

-96,881,000

20,592,000

'

Net change on cash flow hedges

'

'

'

'

'

-42,000

[1]

-56,000

[1]

-125,000

[1]

'

Pension liability adjustment

'

'

'

'

'

'

'

1,085,000

'

Total other comprehensive (loss) income

'

'

'

'

-16,940,000

11,116,000

-96,937,000

21,552,000

'

Common shares repurchased

'

'

'

'

'

'

'

'

'

Total number of Shares (or Units) Purchased

'

3,022

12

1,912

4,946

'

'

'

'

Average price paid per share (or Unit) (in dollars per share)

'

$65.70

$65.47

$68.13

$66.64

'

'

'

'

Depositary shares

'

'

'

'

'

'

'

'

'

Shareholders' Equity

'

'

'

'

'

'

'

'

'

Depositary shares of preferred stock issued

7,000,000

'

'

'

'

'

'

'

'

Interest of each depositary share in a share of preferred stock public offered

0.025

'

'

'

'

'

'

'

'

Depositary shares (in dollars per share)

$25

'

'

'

'

'

'

'

'

Net proceeds from issuance of depositary shares

$169,900,000

'

'

'

'

'

'

'

'

Preferred stock, redemption period

'5 years

'

'

'

'

'

'

'

'

[1]

See Note 12 for additional information on other comprehensive income related to cash flow hedges.

Earnings_per_Common_Share_Deta

Earnings per Common Share (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
Basic EPS:	'	'	'		'
Net income attributable to City National Corporation	$63,633	$59,780	$174,897	[1]	$160,803	[1]
Less: Dividends on preferred stock	2,407	'	7,219		'
Net income available to common shareholders	61,226	59,780	167,678		160,803
Less: Earnings allocated to participating securities	688	842	1,975		2,380
Earnings allocated to common shareholders	60,538	58,938	165,703		158,423
Weighted average common shares outstanding	54,274,000	53,425,000	54,039,000		53,092,000
Basic earnings per common share (in dollars per share)	$1.12	$1.10	$3.07		$2.98
Diluted EPS:	'	'	'		'
Earnings allocated to common shareholders	$60,543	$58,941	$165,716		$158,432
Weighted average common shares outstanding	54,274,000	53,425,000	54,039,000		53,092,000
Dilutive effect of equity awards (in shares)	546,000	286,000	425,000		284,000
Weighted average diluted common shares outstanding	54,820,000	53,711,000	54,464,000		53,376,000
Diluted earnings per common share (in dollars per share)	$1.10	$1.10	$3.04		$2.97
Average outstanding stock options	'	'	'		'
Antidilutive securities not included in calculation of diluted EPS:	'	'	'		'
Antidilutive securities not included in calculation of diluted EPS (in shares)	1,000,000	2,400,000	1,900,000		2,700,000
[1]	Net income excludes net income attributable to redeemable noncontrolling interest of $1,657 and $1,024 for the nine month periods ended September 30, 2013 and 2012, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 18 of the Notes to the Unaudited Consolidated Financial Statements.

ShareBased_Compensation_Detail

Share-Based Compensation (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	plan		plan
Share-Based Compensation	'	'	'	'
Number of share-based compensation plans	1	'	1	'
Shares available for future grants	3,300,000	'	3,300,000	'
Compensation cost recognized for share-based awards	$5,700,000	$4,700,000	$16,300,000	$13,700,000
Total income tax benefit recognized for share-based compensation arrangements	2,400,000	2,000,000	6,800,000	5,700,000
Cash received from the exercise of stock options	'	'	24,963,000	21,653,000
Actual tax benefit realized for the tax deductions from stock option exercises	'	'	4,200,000	2,000,000
Amended and Restated City National Corporation 2008 Omnibus Plan	'	'	'	'
Share-based compensation	'	'	'	'
Granted (in shares)	'	'	0	'
Stock options	'	'	'	'
Share-based compensation, fair value	'	'	'	'
Weighted-average volatility (as a percent)	'	'	28.12%	30.58%
Dividend yield (as a percent)	'	'	2.15%	2.14%
Expected term	'	'	'6 years 1 month 24 days	'6 years 1 month 10 days
Risk-free interest rate (as a percent)	'	'	1.24%	1.44%
Weighted-average grant-date fair values of options granted (in dollars per share)	'	'	$12.57	$11.64
Total intrinsic value of options exercised	'	'	$10,200,000	$7,600,000

ShareBased_Compensation_Detail1

Share-Based Compensation (Details 2) (Stock options, USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Stock options	'	'
Summary of option activity and related information	'	'
Number of Options Outstanding, beginning of the period (in shares)	4,417,000	'
Number of options granted (in shares)	593,000	'
Number of options exercised (in shares)	-587,000	'
Number of options forfeited or expired (in shares)	-69,000	'
Number of Options Outstanding, end of the period (in shares)	4,354,000	'
Weighted Average Exercise Price of Options Outstanding, beginning of the period (in dollars per share)	$53.91	'
Weighted Average Exercise Price of Options Granted (in dollars per share)	$55.73	'
Weighted Average Exercise Price of Options Exercised (in dollars per share)	$42.53	'
Weighted Average Exercise Price of Options Forfeited or expired (in dollars per share)	$55.98	'
Weighted Average Exercise Price of Options Outstanding, end of the period (in dollars per share)	$55.66	'
Outstanding Aggregate Intrinsic Value of in-the-money Options	$54,522,000	'
Weighted Average Remaining Contractual Term Outstanding	'5 years 8 months 12 days	'
Number of Options Exercisable (in shares)	2,937,000	'
Weighted Average Exercise Price of options exercisable (in dollars per share)	$56.86	'
Aggregate Intrinsic Value of in-the-money Options Exercisable	35,391,000	'
Weighted Average Remaining Contractual Term Exercisable	'4 years 4 months 6 days	'
Share-based Compensation Arrangement by Share-based Payment Award, Options Unvested and related information	'	'
Unvested at the beginning of the period (in shares)	1,529,000	'
Granted (in shares)	593,000	'
Vested (in shares)	-681,816	-669,241
Forfeited (in shares)	-23,000	'
Unvested at the end of the period (in shares)	1,417,000	'
Unvested at the beginning of the period (in dollars per share)	$13.36	'
Granted (in dollars per share)	$12.57	$11.64
Vested (in dollars per share)	$12.25	'
Forfeited (in dollars per share)	$13.33	'
Unvested at the end of the period (in dollars per share)	$13.58	'
Total fair value of options vested	8,400,000	8,200,000
Unrecognized compensation cost related to unvested stock options granted	$14,000,000	'
Period of recognition for unrecognized compensation cost related to unvested stock options granted	'2 years 4 months 24 days	'

ShareBased_Compensation_Detail2

Share-Based Compensation (Details 3) (USD $)	9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Restricted stock	'	'
Summary of changes in restricted stock and related information	'	'
Unvested at the beginning of the period (in shares)	747,000	'
Granted (in shares)	70,000	'
Vested (in shares)	-198,268	-187,898
Forfeited (in shares)	-8,000	'
Unvested at the end of the period (in shares)	611,000	'
Weighted Average Grant Date Fair Value, beginning of the period (in dollars per share)	$50.73	'
Weighted Average Grant Date Fair Value Granted (in dollars per share)	$56.01	$47.04
Weighted Average Grant Date Fair Value Vested (in dollars per share)	$45.91	'
Weighted Average Grant Date Fair Value Forfeited (in dollars per share)	$49.82	'
Weighted Average Grant Date Fair Value, end of the period (in dollars per share)	$52.91	'
Total fair value of awards vested during the period	$9.10	$8.70
Unrecognized compensation cost	$18.60	'
Period for recognition of unrecognized compensation cost	'2 years 8 months 12 days	'
Cash-settled restricted stock units	'	'
Summary of changes in restricted stock and related information	'	'
Unvested at the beginning of the period (in shares)	101,000	'
Granted (in shares)	90,000	'
Forfeited (in shares)	-2,000	'
Unvested at the end of the period (in shares)	189,000	'

Derivative_Instruments_Details

Derivative Instruments (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Derivative	'	'	'
Number of Hedging instruments	0	'	'
Cash Flow Hedge	'	'	'
Derivative	'	'	'
Notional Amount	$0	$0	$0
Derivatives designated as hedging instruments	'	'	'
Derivative	'	'	'
Notional Amount	'	205,500,000	'
Derivative Assets	'	2,300,000	'
Derivative Liabilities	'	100,000	'
Derivatives designated as hedging instruments | Deposits and borrowings	'	'	'
Derivative	'	'	'
Derivative Assets	'	1,100,000	'
Derivatives designated as hedging instruments | Interest Rate Swaps	'	'	'
Derivative	'	'	'
Notional Amount	0	'	'
Derivatives designated as hedging instruments | Fair Value Hedge | Interest Rate Swaps	'	'	'
Derivative	'	'	'
Mark-to-market asset	'	1,100,000	'
Net interest receivable	'	1,200,000	'
Derivatives designated as hedging instruments | Fair Value Hedge | Interest Rate Swaps | Long-term and subordinated debt	'	'	'
Derivative	'	'	'
Notional Amount	'	205,500,000	'
Derivative Assets	'	2,300,000	'
Derivative Liabilities	'	100,000	'
Derivatives not designated as hedging instruments	'	'	'
Derivative	'	'	'
Notional Amount	3,591,300,000	2,719,100,000	'
Derivative Assets	53,100,000	66,800,000	'
Derivative Liabilities	51,000,000	65,900,000	'
Derivatives not designated as hedging instruments | Option contracts	'	'	'
Derivative	'	'	'
Derivative Assets	500,000	700,000	'
Derivatives not designated as hedging instruments | Interest Rate Contracts	'	'	'
Derivative	'	'	'
Notional Amount	3,082,900,000	2,487,700,000	'
Derivative Assets	48,300,000	64,600,000	'
Derivative Liabilities	47,300,000	64,600,000	'
Derivatives not designated as hedging instruments | Interest Rate Contracts | Options purchased	'	'	'
Derivative	'	'	'
Notional Amount	2,000,000	2,000,000	'
Derivative Assets	500,000	200,000	'
Derivative Liabilities	500,000	200,000	'
Derivatives not designated as hedging instruments | Interest Rate Contracts | Options written	'	'	'
Derivative	'	'	'
Notional Amount	2,000,000	2,000,000	'
Derivatives not designated as hedging instruments | Interest Rate Swaps	'	'	'
Derivative	'	'	'
Notional Amount	2,818,400,000	2,243,600,000	'
Derivative Assets	46,800,000	64,200,000	'
Derivative Liabilities	45,800,000	64,200,000	'
Derivatives not designated as hedging instruments | Interest Rate Caps, Floors and Collars	'	'	'
Derivative	'	'	'
Notional Amount	260,500,000	240,100,000	'
Derivative Assets	1,000,000	200,000	'
Derivative Liabilities	1,000,000	200,000	'
Derivatives not designated as hedging instruments | Spot and forward contracts	'	'	'
Derivative	'	'	'
Notional Amount	492,800,000	231,400,000	'
Derivative Assets	4,200,000	1,500,000	'
Derivative Liabilities	3,600,000	1,300,000	'
Derivatives not designated as hedging instruments | Foreign exchange contracts	'	'	'
Derivative	'	'	'
Notional Amount	508,400,000	231,400,000	'
Derivative Assets	4,300,000	1,500,000	'
Derivative Liabilities	3,700,000	1,300,000	'
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options purchased	'	'	'
Derivative	'	'	'
Notional Amount	7,800,000	'	'
Derivatives not designated as hedging instruments | Foreign exchange contracts | Options written	'	'	'
Derivative	'	'	'
Notional Amount	7,800,000	'	'
Derivative Assets	100,000	'	'
Derivative Liabilities	$100,000	'	'

Derivative_Instruments_Details1

Derivative Instruments (Details 2) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

In Millions, unless otherwise specified

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2013

Dec. 31, 2012

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives not designated as hedging instruments

Derivatives designated and not designated as hedging instruments

Derivatives designated and not designated as hedging instruments

Derivatives designated and not designated as hedging instruments

Fair Value Hedge

Fair Value Hedge

Fair Value Hedge

Cash Flow Hedge

Cash Flow Hedge

Cash Flow Hedge

Cash Flow Hedge

Interest Rate Contracts

Interest Rate Contracts

Interest Rate Contracts

Interest Rate Contracts

Option contracts

Option contracts

Option contracts

Option contracts

Foreign Exchange Contracts

Foreign Exchange Contracts

Foreign Exchange Contracts

Foreign Exchange Contracts

Interest Rate Swaps

Interest Rate Swaps

Interest Rate Swaps

Interest Rate Swaps

Interest Rate Swaps

Interest income

Interest income

Interest Rate Swaps

Interest Rate Swaps

Other noninterest income

Other noninterest income

Other noninterest income

Other noninterest income

Other noninterest income

Other noninterest income

Other noninterest income

Other noninterest income

International services income

International services income

International services income

International services income

Interest expense

Interest expense

Interest expense

Interest income

Interest income

Derivative instruments gain (loss)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative Instruments, Gain (Loss) Recognized in Income, Net

$2.10

$1.10

$6.30

($2.10)

($1)

($6.20)

'

'

$0.10

$0.10

$6.80

$6.10

$21.60

$17.10

($0.30)

$0.10

$0.90

($0.50)

($0.10)

($0.30)

$0.30

($1)

$7.20

$6.30

$20.40

$18.60

'

'

'

Amount of gains reclassified from AOCI to Interest

'

'

'

'

'

'

0.1

0.1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit Risk Exposure and Collateral

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate fair value of derivatives with credit-risk-related contingent features, net liability position

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.5

'

'

Collateral delivered on swap agreements in the form of securities, with credit-risk-related contingent features

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.2

'

'

Collateral delivered on swap agreements in the form of cash, with credit-risk-related contingent features

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.7

'

'

Interest rate swap credit risk exposure

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.6

1.6

Collateral received from swap counterparties

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

1

Collateral delivered on swap agreements, without credit-risk contingent features

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$12.40

'

Balance_Sheet_Offsetting_Detai

Balance Sheet Offsetting (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Reverse repurchase agreements	'	'
Gross Amount Recognized	$200,000	'
Net Amount Presented in the Balance Sheet	200,000	'
Gross Amounts Not Offset in the Balance Sheet, Securities Collateral	-200,000	'
Derivatives designated as hedging instruments	'	'
Financial assets	'	'
Gross Amount Recognized	'	2,300
Financial liabilities	'	'
Gross Amount Recognized	'	100
Derivatives designated as hedging instruments | Master netting arrangements and similar agreements	'	'
Financial assets	'	'
Gross Amount Recognized	'	2,249
Gross Amount Offset	'	-83
Net Amount Presented in the Balance Sheet	'	2,166
Gross Amounts Not Offset in the Balance Sheet, Securities Collateral	'	-1,034
Net Amount	'	1,132
Financial liabilities	'	'
Gross Amount Recognized	'	83
Gross Amount Offset	'	-83
Derivatives not designated as hedging instruments	'	'
Financial assets	'	'
Gross Amount Recognized	53,100	66,800
Financial liabilities	'	'
Gross Amount Recognized	51,000	65,900
Derivatives not designated as hedging instruments | Master netting arrangements and similar agreements	'	'
Financial assets	'	'
Gross Amount Recognized	13,196	1,920
Gross Amount Offset	-8,463	-1,454
Net Amount Presented in the Balance Sheet	4,733	466
Net Amount	4,733	466
Financial liabilities	'	'
Gross Amount Recognized	43,332	65,461
Gross Amount Offset	-8,463	-1,453
Net Amount Presented in the Balance Sheet	34,869	64,008
Gross Amounts Not Offset in the Balance Sheet, Securities Collateral	-13,638	-48,697
Gross Amounts Not Offset in the Balance Sheet, Cash Collateral	-10,718	'
Net Amount	10,513	15,311
Total financial assets and total financial liabilities | Master netting arrangements and similar agreements	'	'
Financial assets	'	'
Gross Amount Recognized	213,196	4,169
Gross Amount Offset	-8,463	-1,537
Net Amount Presented in the Balance Sheet	204,733	2,632
Gross Amounts Not Offset in the Balance Sheet, Securities Collateral	-200,000	-1,034
Net Amount	4,733	1,598
Financial liabilities	'	'
Gross Amount Recognized	43,332	65,544
Gross Amount Offset	-8,463	-1,536
Net Amount Presented in the Balance Sheet	34,869	64,008
Gross Amounts Not Offset in the Balance Sheet, Securities Collateral	-13,638	-48,697
Gross Amounts Not Offset in the Balance Sheet, Cash Collateral	-10,718	'
Net Amount	$10,513	$15,311

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income tax expense (benefit)	'	'	'	'	'
Income tax expense	$27,052,000	$29,052,000	$73,735,000	$78,042,000	'
Interest and penalties expense or benefit relating to uncertain tax positions	'	'	-400,000	200,000	'
Accrued interest and penalties relating to uncertain tax positions	$3,000,000	'	$3,000,000	'	$3,400,000

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended			9 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Mar. 14, 2012	Sep. 30, 2013	Sep. 30, 2012
					Supplemental Executive Retirement Plan ("SERP")	Supplemental Executive Retirement Plan ("SERP")	Supplemental Executive Retirement Plan ("SERP")	Supplemental Executive Retirement Plan ("SERP")	Supplemental Executive Retirement Plan ("SERP") for former executives of the Pacific Bank	Supplemental Executive Retirement Plan ("SERP") for former executives of the Pacific Bank
						person			person
Employee Benefit Plans	'	'	'	'	'	'	'	'	'	'
Maximum contribution by employee (as a percent)	'	'	50.00%	'	'	'	'	'	'	'
Percentage of employer contribution of first 6 percent of covered compensation	'	'	50.00%	'	'	'	'	'	'	'
Maximum employee contribution matched by employer as a percentage of covered compensation	'	'	6.00%	'	'	'	'	'	'	'
Profit sharing and matching contribution expense	$5.50	$4.80	$15.50	$14.30	'	'	'	'	'	'
Percentage of incentive compensation	100.00%	'	100.00%	'	'	'	'	'	'	'
Net deferred compensation expense	0.2	0.1	0.7	0.4	'	'	'	'	'	'
Supplemental Executive Retirement Plan ("SERP"):	'	'	'	'	'	'	'	'	'	'
Number of executives (in persons)	'	'	'	'	'	1	'	'	3	'
Number of units converted into the deferred compensation stock fund	'	'	'	'	'	'	'	167,423	'	'
Deferred compensation stock fund in equity	'	'	'	'	'	'	'	8.3	'	'
Pension expense from conversion of fully vested interest into the deferred compensation stock fund in equity	'	'	'	'	1.7	'	'	'	'	'
Pension expense	'	'	'	'	'	0	1.9	'	0.2	0.1
Unfunded pension liability	'	'	'	'	'	'	'	'	$2.30	'

Contingencies_Details

Contingencies (Details) (USD $)	Sep. 30, 2013
In Millions, unless otherwise specified
Contingencies	'
Maximum liability under indemnity in connection with liquidation of an investment acquired	$23

Variable_Interest_Entities_Det

Variable Interest Entities (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Variable Interest Entities	'	'
Affordable housing investments	$182,088,000	$154,011,000
Affordable Housing VIEs - not primary beneficiary	'	'
Variable Interest Entities	'	'
Affordable housing investments	182,100,000	154,000,000
Unfunded commitments for affordable housing investments	81,000,000	'
Number of significant variable interest in affordable housing partnerships (in entities)	4	'
Maximum exposure to loss	1,400,000	'
Unfunded commitments for affordable housing investments with significant variable interest	0	'
Aggregate carrying value of private equity and alternative investment funds	$36,300,000	$36,100,000

Noncontrolling_Interest_Detail

Noncontrolling Interest (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
	item
Redeemable Noncontrolling Interest	'	'
Number of firms in which entity holds majority ownership interest	5	'
Fair value of noncontrolling owners equity interests	$39,840	'
Redeemable noncontrolling interest	'	'
Balance, beginning of period	41,112	'
Net income	1,657	1,024
Balance, end of period	39,840	'
Redeemable Noncontrolling Interest	'	'
Redeemable Noncontrolling Interest	'	'
Number of firms in which entity holds majority ownership interest	5	'
Fair value of noncontrolling owners equity interests	39,840	41,386
Redeemable noncontrolling interest	'	'
Balance, beginning of period	41,112	44,643
Net income	1,657	1,024
Distributions to redeemable noncontrolling interest	-1,285	-1,261
Additions and redemptions, net	-1,625	-1,987
Adjustments to fair value	-19	-1,033
Balance, end of period	$39,840	$41,386

Segment_Results_Details

Segment Results (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012
			segment
Segment Results	'	'	'		'
Number of reportable segments	'	'	3		'
Earnings Summary:	'	'	'		'
Net interest income	$214,271	$209,922	$618,263		$627,114
Provision for credit losses on loans and leases, excluding covered loans	'	2,000	'		3,000
Provision for losses on covered loans	2,496	18,089	461		38,848
Noninterest income	88,883	107,257	264,620		257,725
Depreciation and amortization	9,759	10,256	30,043		29,101
Noninterest expense	199,605	197,630	602,090		574,021
Income before income taxes	91,294	89,204	250,289		239,869
Provision for income taxes	27,052	29,052	73,735		78,042
Net income	64,242	60,152	176,554		161,827
Less: Net income attributable to noncontrolling interest	609	372	1,657		1,024
Net income attributable to City National Corporation	63,633	59,780	174,897	[1]	160,803	[1]
Selected Average Balances:	'	'	'		'
Loans and leases, excluding covered loans	16,039,753	13,587,508	15,432,239		13,050,523
Covered loans	818,928	1,207,031	905,411		1,328,484
Total assets	28,061,134	25,654,594	27,747,914		24,558,030
Deposits	24,301,647	21,940,820	23,284,065		21,038,791
Goodwill	642,622	632,473	642,622		551,065
Customer-relationship intangibles, net	43,469	54,751	45,371		41,413
Commercial and Private Banking	'	'	'		'
Earnings Summary:	'	'	'		'
Net interest income	194,678	184,552	563,662		541,125
Provision for credit losses on loans and leases, excluding covered loans	'	2,000	'		3,000
Provision for losses on covered loans	2,496	18,089	461		38,848
Noninterest income	38,601	59,911	119,418		156,884
Depreciation and amortization	3,263	3,569	10,505		10,565
Noninterest expense	170,019	169,652	512,234		506,437
Income before income taxes	57,501	51,153	159,880		139,159
Provision for income taxes	17,153	16,730	47,414		45,469
Net income	40,348	34,423	112,466		93,690
Net income attributable to City National Corporation	40,348	34,423	112,466		93,690
Selected Average Balances:	'	'	'		'
Loans and leases, excluding covered loans	15,989,181	13,526,284	15,378,936		12,994,726
Covered loans	818,928	1,207,031	905,411		1,328,484
Total assets	17,014,239	15,098,090	16,505,794		14,656,439
Deposits	23,817,083	21,298,105	22,696,050		20,469,604
Goodwill	393,176	393,176	393,176		362,868
Customer-relationship intangibles, net	4,445	7,392	5,174		8,173
Wealth Management	'	'	'		'
Earnings Summary:	'	'	'		'
Net interest income	243	1,133	805		2,396
Noninterest income	57,536	54,405	171,461		133,743
Depreciation and amortization	1,878	1,996	5,654		4,980
Noninterest expense	48,184	45,387	143,920		117,650
Income before income taxes	7,717	8,155	22,692		13,509
Provision for income taxes	2,120	2,545	6,238		4,080
Net income	5,597	5,610	16,454		9,429
Less: Net income attributable to noncontrolling interest	609	372	1,657		1,024
Net income attributable to City National Corporation	4,988	5,238	14,797		8,405
Selected Average Balances:	'	'	'		'
Total assets	644,677	638,445	647,273		569,047
Deposits	76,052	104,195	100,922		100,038
Goodwill	249,446	239,297	249,446		188,197
Customer-relationship intangibles, net	39,024	47,359	40,197		33,240
Other	'	'	'		'
Earnings Summary:	'	'	'		'
Net interest income	19,350	24,237	53,796		83,593
Noninterest income	-7,254	-7,059	-26,259		-32,902
Depreciation and amortization	4,618	4,691	13,884		13,556
Noninterest expense	-18,598	-17,409	-54,064		-50,066
Income before income taxes	26,076	29,896	67,717		87,201
Provision for income taxes	7,779	9,777	20,083		28,493
Net income	18,297	20,119	47,634		58,708
Net income attributable to City National Corporation	18,297	20,119	47,634		58,708
Selected Average Balances:	'	'	'		'
Loans and leases, excluding covered loans	50,572	61,224	53,303		55,797
Total assets	10,402,218	9,918,059	10,594,847		9,332,544
Deposits	$408,512	$538,520	$487,093		$469,149
[1]	Net income excludes net income attributable to redeemable noncontrolling interest of $1,657 and $1,024 for the nine month periods ended September 30, 2013 and 2012, respectively. Redeemable noncontrolling interest is reflected in the mezzanine section of the consolidated balance sheets. See Note 18 of the Notes to the Unaudited Consolidated Financial Statements.

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	0 Months Ended			0 Months Ended
	Nov. 13, 2012	Nov. 13, 2012	Nov. 05, 2013	Nov. 07, 2013	Nov. 07, 2013
		Depositary shares	Subsequent Events	Subsequent Events	Subsequent Events
				Non-cumulative perpetual preferred stock, Series D	Depositary shares
Subsequent events	'	'	'	'	'
Depositary shares of preferred stock issued	'	7,000,000	'	'	4,000,000
Depositary shares (in dollars per share)	'	$25	'	'	$25
Interest of each depositary share in a share of preferred stock public offered	'	0.025	'	'	0.025
Percentage of dividend on preferred stock	5.50%	'	'	6.75%	'
Net proceeds from issuance of depositary shares	'	$169,900,000	'	'	$97,000,000
Transfer of debt securities from available-for-sale to held-to-maturity	'	'	$1,000,000,000	'	'