XML 19 R54.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Investments (Aggregate Values and Unrealized Gains and Losses) (Details) (USD $) | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Schedule of Investments [Line Items] |  |
Investment securities, aggregate fair value, continuous unrealized losses of more than 12 months | $ 56,800,000 |
Investment securities available for sale |  |
Cost | 5,404,335,000 | 5,192,419,000
Gross Unrealized Gains | 28,188,000 | 34,517,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 44,820,000 | 708,000
Fair Value | 5,387,703,000 | 5,226,228,000
Investment securities held to maturity |  |
Cost | 907,000 | 1,342,000
Investment securities, aggregate unrealized loss, continuous unrealized losses of more than 12 months | 1,100,000 |
U. S. Treasury |  |
Investment securities available for sale |  |
Cost | 373,223,000 | 823,241,000
Gross Unrealized Gains | 259,000 | 403,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 45,000 | 12,000
Fair Value | 373,437,000 | 823,632,000
Government Agency |  |
Investment securities available for sale |  |
Cost | 2,543,223,000 | 3,052,040,000
Gross Unrealized Gains | 1,798,000 | 3,501,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 792,000 | 337,000
Fair Value | 2,544,229,000 | 3,055,204,000
Mortgage Backed Securities, Other [Member] |  |
Investment securities available for sale |  |
Cost | 2,486,297,000 | 1,315,211,000
Gross Unrealized Gains | 4,526,000 | 14,787,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 43,950,000 | 341,000
Fair Value | 2,446,873,000 | 1,329,657,000
Investment securities held to maturity |  |
Cost | 907,000 | 1,342,000
Held To Maturity Securities Accumulated Unrecognized Holding Gain | 67,000 | 133,000
Held To Maturity Securities Accumulated Unrecognized Holding Loss | 0 | 27,000
Fair Value | 974,000 | 1,448,000
Equity Securities |  |
Investment securities available for sale |  |
Cost | 543,000 | 543,000
Gross Unrealized Gains | 21,604,000 | 15,822,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 0 | 0
Fair Value | 22,147,000 | 16,365,000
State, County and Municipal |  |
Investment securities available for sale |  |
Cost | 186,000 | 546,000
Gross Unrealized Gains | 1,000 | 4,000
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 0 | 0
Fair Value | 187,000 | 550,000
Other Debt Obligations |  |
Investment securities available for sale |  |
Cost | 863,000 | 838,000
Gross Unrealized Gains | 0 | 0
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments | 33,000 | 18,000
Fair Value | $ 830,000 | $ 820,000

X
- Definition Amount of accumulated pre-tax unrealized gains before deducting pre-tax unrealized losses on investments in available-for-sale securities impactinginvestments. + References No definition available. + Details
Name: | fcnca_AvailableForSaleDebtSecuritiesGrossUnrealizedGainAccumulatedInInvestments
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated pre-tax unrealized loss before deducting pre-tax unrealized gain on investments in available-for-sale securities impacting investments. + References No definition available. + Details
Name: | fcnca_AvailableForSaleSecuritiesGrossUnrealizedLossAccumulatedInInvestments
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This item represents the excess of amortized cost basis over fair value of securities in a gain position and which are categorized as held-to-maturity. + References No definition available. + Details
Name: | fcnca_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as held-to-maturity. + References No definition available. + Details
Name: | fcnca_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investment securities, aggregate fair value, continuous unrealized losses of more than 12 months + References No definition available. + Details
Name: | fcnca_InvestmentSecuritiesAggregateFairValueContinuousUnrealizedLossesOfMoreThan12Months
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment securities, aggregate unrealized loss, continuous unrealized losses of more than 12 months + References No definition available. + Details
Name: | fcnca_InvestmentSecuritiesAggregateUnrealizedLossContinuousUnrealizedLossesOfMoreThan12Months
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.6) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_HeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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