XML 37 R55.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Business Combinations Businss Combinations (Details) (USD $) | 12 Months Ended | 0 Months Ended |
--- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Oct. 02, 2014 | Jan. 02, 2014 | Oct. 01, 2014
Business Acquisition [Line Items] |  |  |  |  |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value |  |  |  |  |  | $ 4,175,586,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue
Short-term borrowings |  |  |  |  |  | 296,100,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFederalFundsPurchased
Merger-related expenses | 13,064,000us-gaap_BusinessCombinationAcquisitionRelatedCosts | 391,000us-gaap_BusinessCombinationAcquisitionRelatedCosts | 791,000us-gaap_BusinessCombinationAcquisitionRelatedCosts |  |  |
Bancorporation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
BancShares number of shares owned in Bancorporation |  |  |  | 32,042fcnca_SharesOwnedInAcquiredCompany / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Gain on Bancorporation stock |  |  |  | 29,129us-gaap_GainOnSaleOfInvestments / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Cash paid to shareholders |  |  |  | 30,394,000fcnca_PaymentstoAcquireBusinessesCashPaidtoShareholders / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Fair value of Bancorporation shares owned by BancShares |  |  |  |  |  | 29,551,000us-gaap_InvestmentOwnedAtFairValue / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Total purchase price |  |  |  | 624,192,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Cash and due from banks |  |  |  |  |  | 194,570,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Overnight investments |  |  |  |  |  | 1,087,325,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOvernightInvestments / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Investment securities |  |  |  |  |  | 2,011,263,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Loans held for sale |  |  |  |  |  | 30,997,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLoansHeldforSale / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Loans and leases |  |  |  |  |  | 4,491,067,000fcnca_LoansAndLeasesAcquiredInBusinessCombination / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Premises and equipment |  |  |  |  |  | 238,646,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Other real estate owned |  |  |  |  |  | 35,344,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherRealEstateOwned / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Income earned not collected |  |  |  |  |  | 15,266,000fcnca_BusinessCombinationAssetsAndLiabilitiesAcquiredIncomeEarnedNotCollected / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
FDIC loss share receivable |  |  |  |  |  | 5,106,000us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Other intangible assets |  |  |  |  |  | 109,416,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Other assets |  |  |  |  |  | 56,367,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Total assets acquired |  |  |  |  |  | 8,275,367,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Deposits |  |  |  |  |  | 7,174,817,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesDeposits / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Short-term borrowings |  |  |  |  |  | 295,681,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFederalFundsPurchased / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Long-term obligations |  |  |  |  |  | 124,852,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
FDIC loss share payable |  |  |  |  |  | 224,000fcnca_BusinessCombinationIdentifiableAssetsAcquiredAndLiabilitiesAssumedFDICLossSharePayable / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Other liabilities |  |  |  |  |  | 59,834,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Total liabilities assumed |  |  |  |  |  | 7,655,408,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Fair value of net assets (liabilities) acquired |  |  |  |  |  | 619,959,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember
Goodwill acquired | 4,233,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember | 0us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  | 4,233,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Revenue of acquired business | 92,800,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |  |  |  |
Net income of acquired business | 12,700,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |  |  |  |
Merger-related expenses | 8,000,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |  |  |  |
Pro forma revenue | 1,336,340,000us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember | 1,412,226,000us-gaap_BusinessAcquisitionsProFormaRevenue / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |  |  |
Pro forma net income | (13,171,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember | 210,529,000us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |  |  |
Goodwill Impairment Prior To Acquisition |  |  |  | 166,800,000fcnca_GoodwillImpairmentPriorToAcquisition / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember |  |
Bancorporation | Class A Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 2,586,762us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |
Value of shares of BancShares common stock issued to Bancorporation shareholders |  |  |  |  |  | 560,370,000us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Bancorporation | Class B Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 18,202us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |
Value of shares of BancShares common stock issued to Bancorporation shareholders |  |  |  |  |  | 3,877,000us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
1st Financial |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Cash paid to shareholders |  |  |  |  | 2,000,000fcnca_PaymentstoAcquireBusinessesCashPaidtoShareholders / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Cash paid to acquire and retire TARP securities |  |  |  |  | 8,000,000fcnca_PaymentstoAcquireBusinessesTARPSecurities / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Total purchase price |  |  |  |  | 10,000,000us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Cash and due from banks |  |  |  |  | 28,194,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Investment securities |  |  |  |  | 237,438,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Loans held for sale |  |  |  |  | 1,183,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLoansHeldforSale / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Restricted equity securities |  |  |  |  | 3,776,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedRestrictedEquitySecurities / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value |  |  |  |  | 307,927,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Premises and equipment |  |  |  |  | 2,686,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Other real estate owned |  |  |  |  | 11,591,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherRealEstateOwned / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Other intangible assets |  |  |  |  | 3,780,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Other assets |  |  |  |  | 16,346,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Total assets acquired |  |  |  |  | 612,921,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Deposits |  |  |  |  | 631,871,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesDeposits / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Short-term borrowings |  |  |  |  | 406,000fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFederalFundsPurchased / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Other liabilities |  |  |  |  | 3,559,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Total liabilities assumed |  |  |  |  | 635,836,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Fair value of net assets (liabilities) acquired |  |  |  |  | 22,915,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Goodwill acquired | 32,915,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember | 0us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |  |  | 32,915,000us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |
Revenue of acquired business | 15,200,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |  |  |  |  |
Merger-related expenses | 5,000,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |  |  |  |  |
Subsequent adjustment to goodwill for revised fair value estimate in acquisition | (8,400,000)us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_BusinessAcquisitionAxis = fcnca_A1stFinancialMember |  |  |  |  |
Shares and Cash |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive cash per share | 50.00fcnca_BusinessAcquisitionEquityInterestsIssuedorIssuableCashPerShare / fcnca_ShareholderElectionTypeAxis = fcnca_SharesandCashMember |  |  |  |  |
Shares and Cash | Class A Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 4.00us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / fcnca_ShareholderElectionTypeAxis = fcnca_SharesandCashMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |
Shares and Cash | Bancorporation |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive cash per share | $ 50.00fcnca_BusinessAcquisitionEquityInterestsIssuedorIssuableCashPerShare / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / fcnca_ShareholderElectionTypeAxis = fcnca_SharesandCashMember |  |  |  |  |
Shares and Cash | Bancorporation | Class A Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 4.00us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / fcnca_ShareholderElectionTypeAxis = fcnca_SharesandCashMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |
Shares Only | Class A Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 3.58us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / fcnca_ShareholderElectionTypeAxis = fcnca_SharesOnlyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |
Shares Only | Class B Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 0.42us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / fcnca_ShareholderElectionTypeAxis = fcnca_SharesOnlyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |
Shares Only | Bancorporation | Class A Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 3.58us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / fcnca_ShareholderElectionTypeAxis = fcnca_SharesOnlyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember |  |  |  |  |
Shares Only | Bancorporation | Class B Common Stock |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Right to receive number of shares conversion | 0.42us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued / us-gaap_BusinessAcquisitionAxis = fcnca_BancorporationMember / fcnca_ShareholderElectionTypeAxis = fcnca_SharesOnlyMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember |  |  |  |  |

X
- Definition Business Acquisition Equity Interests Issued or Issuable Cash Per Share + References No definition available. + Details
Name: | fcnca_BusinessAcquisitionEquityInterestsIssuedorIssuableCashPerShare
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Income earned not collected acquired through a business combination. + References No definition available. + Details
Name: | fcnca_BusinessCombinationAssetsAndLiabilitiesAcquiredIncomeEarnedNotCollected
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition FDIC loss share payable assumed through business combination. + References No definition available. + Details
Name: | fcnca_BusinessCombinationIdentifiableAssetsAcquiredAndLiabilitiesAssumedFDICLossSharePayable
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deposits + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentLiabilitiesDeposits
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Federal Funds Purchased + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedFederalFundsPurchased
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Held for Sale + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedLoansHeldforSale
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Real Estate Owned + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherRealEstateOwned
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Overnight investments acquired through a business combination. + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOvernightInvestments
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Equity Securities + References No definition available. + Details
Name: | fcnca_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedRestrictedEquitySecurities
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Goodwill impairment recorded by an acquired company before acquisition. + References No definition available. + Details
Name: | fcnca_GoodwillImpairmentPriorToAcquisition
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The fair value of loans and leases acquired in a business combination. + References No definition available. + Details
Name: | fcnca_LoansAndLeasesAcquiredInBusinessCombination
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cash paid to the shareholders of the acquired business not including any payments made to other parties. + References No definition available. + Details
Name: | fcnca_PaymentstoAcquireBusinessesCashPaidtoShareholders
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Payments to Acquire Businesses, TARP Securities + References No definition available. + Details
Name: | fcnca_PaymentstoAcquireBusinessesTARPSecurities
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Shares Owned In Acquired Company + References No definition available. + Details
Name: | fcnca_SharesOwnedInAcquiredCompany
Namespace Prefix: | fcnca_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionsProFormaRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
Name: | us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 + Details
Name: | us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of indemnification assets (amounts to be reimbursed if and when certain assumed liabilities are paid) recognized at the acquisition date of a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationIndemnificationAssetsAmountAsOfAcquisitionDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other liabilities due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value at acquisition of acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale. + References No definition available. + Details
Name: | us-gaap_GainOnSaleOfInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillAcquiredDuringPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460 + Details
Name: | us-gaap_GoodwillPurchaseAccountingAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Paragraph Column C -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph Column E -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.Column C.3,4) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611133-123010 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.Column C.7) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611225-123010 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14.Column E.2,3) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5 -Subparagraph (SX 210.12-13.Column C.6) -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611282-123010 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column C -Article 12 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph 3, 4 -Article 12 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph 2, 3 -Article 12 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 13 -Paragraph 6 -Article 12 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph 7 -Article 12 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12C -Paragraph Column C -Article 12 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | fcnca_ShareholderElectionTypeAxis=fcnca_SharesandCashMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | fcnca_ShareholderElectionTypeAxis=fcnca_SharesOnlyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=fcnca_A1stFinancialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=fcnca_BancorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |