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Loans and Leases (Composition Of The Loans And Leases Outstanding At By Credit Quality Indicator) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011 | Mar. 31, 2011
--- | --- | --- | ---
Noncovered loans | $ 11,489,529 | [1] | $ 11,581,637 | [2] | $ 11,392,351 | [1]
Covered under loss share agreements | 2,183,869 | [1] | 2,362,152 | [2] | 2,658,134 | [1]
Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 7,830,041 |  | 7,866,572 |  | 7,546,718 |
Covered under loss share agreements | 1,745,709 |  | 1,872,685 |  | 2,171,294 |
Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 3,659,488 |  | 3,715,065 |  | 3,845,633 |
Covered under loss share agreements | 438,160 |  | 489,467 |  | 486,840 |
Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 346,557 |  | 381,163 |  | 373,769 |
Covered under loss share agreements | 310,601 |  | 338,873 |  | 402,316 |
Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 132,677 |  | 137,271 |  | 145,864 |
Covered under loss share agreements | 85,555 |  | 105,536 |  | 111,425 |
Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 5,127,948 |  | 5,104,993 |  | 4,763,393 |
Covered under loss share agreements | 1,195,541 |  | 1,260,589 |  | 1,432,632 |
Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 150,316 |  | 144,771 |  | 147,150 |
Covered under loss share agreements | 144,978 |  | 158,394 |  | 163,305 |
Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Covered under loss share agreements | 93,261 |  | 113,442 |  | 171,041 |
Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 315,704 |  | 312,869 |  | 295,994 |
Covered under loss share agreements | 45 |  | 57 |  | 271 |
Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 149,792 |  | 158,369 |  | 174,370 |
Covered under loss share agreements | 1,283 |  | 1,330 |  | 1,729 |
Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 793,612 |  | 784,118 |  | 808,650 |
Covered under loss share agreements | 298,538 |  | 327,568 |  | 347,393 |
Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Covered under loss share agreements | 50,016 |  | 51,552 |  | 23,409 |
Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 451,061 |  | 497,370 |  | 591,451 |
Covered under loss share agreements | 4,051 |  | 4,811 |  | 4,613 |
Pass [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 7,195,417 |  | 7,232,547 |  | 6,883,895 |
Pass [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 303,018 |  | 332,742 |  | 316,395 |
Pass [Member] | Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 4,744,063 |  | 4,749,254 |  | 4,403,652 |
Pass [Member] | Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 136,776 |  | 130,586 |  | 133,931 |
Pass [Member] | Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 1,554,112 |  | 1,556,651 |  | 1,571,193 |
Pass [Member] | Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 309,681 |  | 306,225 |  | 285,699 |
Pass [Member] | Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 147,767 |  | 157,089 |  | 173,025 |
Special Mention [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 311,248 |  | 287,788 |  | 309,400 |
Special Mention [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 20,097 |  | 18,973 |  | 22,416 |
Special Mention [Member] | Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 243,495 |  | 220,235 |  | 232,019 |
Special Mention [Member] | Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 6,805 |  | 5,821 |  | 7,415 |
Special Mention [Member] | Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 35,497 |  | 36,951 |  | 40,023 |
Special Mention [Member] | Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 3,336 |  | 4,537 |  | 6,228 |
Special Mention [Member] | Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 2,018 |  | 1,271 |  | 1,299 |
Substandard [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 187,690 |  | 196,325 |  | 192,164 |
Substandard [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 21,297 |  | 28,793 |  | 32,864 |
Substandard [Member] | Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 130,815 |  | 129,391 |  | 119,229 |
Substandard [Member] | Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 6,068 |  | 7,794 |  | 5,271 |
Substandard [Member] | Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 27,057 |  | 28,240 |  | 30,992 |
Substandard [Member] | Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 2,453 |  | 2,107 |  | 3,796 |
Substandard [Member] | Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 0 |  | 0 |  | 12 |
Doubtful [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 10,450 |  | 2,201 |  | 9,952 |
Doubtful [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 1,821 |  | 17 |  | 2,094 |
Doubtful [Member] | Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 6,588 |  | 1,164 |  | 6,004 |
Doubtful [Member] | Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 365 |  | 377 |  | 401 |
Doubtful [Member] | Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 1,676 |  | 643 |  | 1,182 |
Doubtful [Member] | Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 0 |  | 0 |  | 271 |
Doubtful [Member] | Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 0 |  | 0 |  | 0 |
Ungraded [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 125,236 |  | 147,711 |  | 151,307 |
Ungraded [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 324 |  | 638 |  | 0 |
Ungraded [Member] | Commercial Mortgage [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 2,987 |  | 4,949 |  | 2,489 |
Ungraded [Member] | Other Commercial Real Estate [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 302 |  | 193 |  | 132 |
Ungraded [Member] | Commercial And Industrial [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 121,382 |  | 141,922 |  | 148,652 |
Ungraded [Member] | Lease Financing [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 234 |  | 0 |  | 0 |
Ungraded [Member] | Other Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 7 |  | 9 |  | 34 |
Covered Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 2,183,869 |  | 2,362,152 |  | 2,658,134 |
Covered Loans [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 310,601 |  | 338,873 |  | 402,316 |
Covered Loans [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 85,555 |  | 105,536 |  | 111,425 |
Covered Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 1,195,541 |  | 1,260,589 |  | 1,432,632 |
Covered Loans [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 144,978 |  | 158,394 |  | 163,305 |
Covered Loans [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 93,261 |  | 113,442 |  | 171,041 |
Covered Loans [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 45 |  | 57 |  | 271 |
Covered Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 298,538 |  | 327,568 |  | 347,393 |
Covered Loans [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 50,016 |  | 51,552 |  | 23,409 |
Covered Loans [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 5,334 |  | 6,141 |  | 6,342 |
Covered Loans [Member] | Pass [Member] |  |  |  |  |  |
Covered under loss share agreements | 731,002 |  | 743,881 |  | 815,658 |
Covered Loans [Member] | Pass [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 31,445 |  | 29,321 |  | 76,319 |
Covered Loans [Member] | Pass [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 7,020 |  | 4,958 |  | 4,217 |
Covered Loans [Member] | Pass [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 392,233 |  | 397,526 |  | 574,681 |
Covered Loans [Member] | Pass [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 56,689 |  | 49,259 |  | 60,238 |
Covered Loans [Member] | Pass [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 31,768 |  | 36,409 |  | 49,260 |
Covered Loans [Member] | Pass [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 45 |  | 57 |  | 2 |
Covered Loans [Member] | Pass [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 173,640 |  | 189,794 |  | 42,014 |
Covered Loans [Member] | Pass [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 35,684 |  | 34,164 |  | 5,000 |
Covered Loans [Member] | Pass [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 2,478 |  | 2,393 |  | 3,927 |
Covered Loans [Member] | Special Mention [Member] |  |  |  |  |  |
Covered under loss share agreements | 506,040 |  | 550,617 |  | 595,142 |
Covered Loans [Member] | Special Mention [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 89,243 |  | 92,758 |  | 112,999 |
Covered Loans [Member] | Special Mention [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 14,263 |  | 13,394 |  | 23,127 |
Covered Loans [Member] | Special Mention [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 335,020 |  | 348,482 |  | 339,385 |
Covered Loans [Member] | Special Mention [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 26,736 |  | 33,754 |  | 31,218 |
Covered Loans [Member] | Special Mention [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 21,376 |  | 32,257 |  | 49,511 |
Covered Loans [Member] | Special Mention [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 0 |
Covered Loans [Member] | Special Mention [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 18,054 |  | 25,464 |  | 36,430 |
Covered Loans [Member] | Special Mention [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 802 |  | 3,566 |  | 2,225 |
Covered Loans [Member] | Special Mention [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 546 |  | 942 |  | 247 |
Covered Loans [Member] | Substandard [Member] |  |  |  |  |  |
Covered under loss share agreements | 682,406 |  | 787,309 |  | 660,802 |
Covered Loans [Member] | Substandard [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 86,750 |  | 125,158 |  | 109,509 |
Covered Loans [Member] | Substandard [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 53,919 |  | 72,349 |  | 66,829 |
Covered Loans [Member] | Substandard [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 382,134 |  | 427,996 |  | 356,396 |
Covered Loans [Member] | Substandard [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 51,918 |  | 58,351 |  | 46,393 |
Covered Loans [Member] | Substandard [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 24,905 |  | 21,914 |  | 48,081 |
Covered Loans [Member] | Substandard [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 0 |
Covered Loans [Member] | Substandard [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 70,545 |  | 70,582 |  | 27,761 |
Covered Loans [Member] | Substandard [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 11,153 |  | 9,863 |  | 5,509 |
Covered Loans [Member] | Substandard [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 1,082 |  | 1,096 |  | 324 |
Covered Loans [Member] | Doubtful [Member] |  |  |  |  |  |
Covered under loss share agreements | 234,067 |  | 246,308 |  | 218,140 |
Covered Loans [Member] | Doubtful [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 99,747 |  | 87,936 |  | 98,757 |
Covered Loans [Member] | Doubtful [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 10,353 |  | 14,835 |  | 17,252 |
Covered Loans [Member] | Doubtful [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 85,993 |  | 84,871 |  | 62,984 |
Covered Loans [Member] | Doubtful [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 9,635 |  | 17,030 |  | 24,833 |
Covered Loans [Member] | Doubtful [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 15,212 |  | 22,862 |  | 3,795 |
Covered Loans [Member] | Doubtful [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 22 |
Covered Loans [Member] | Doubtful [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 9,934 |  | 13,833 |  | 7,484 |
Covered Loans [Member] | Doubtful [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 2,377 |  | 3,959 |  | 1,966 |
Covered Loans [Member] | Doubtful [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 816 |  | 982 |  | 1,047 |
Covered Loans [Member] | Ungraded [Member] |  |  |  |  |  |
Covered under loss share agreements | 30,354 |  | 34,037 |  | 368,392 |
Covered Loans [Member] | Ungraded [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 3,416 |  | 3,700 |  | 4,732 |
Covered Loans [Member] | Ungraded [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 0 |
Covered Loans [Member] | Ungraded [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 161 |  | 1,714 |  | 99,186 |
Covered Loans [Member] | Ungraded [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 623 |
Covered Loans [Member] | Ungraded [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 20,394 |
Covered Loans [Member] | Ungraded [Member] | Lease Financing [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 247 |
Covered Loans [Member] | Ungraded [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 26,365 |  | 27,895 |  | 233,704 |
Covered Loans [Member] | Ungraded [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Covered under loss share agreements | 0 |  | 0 |  | 8,709 |
Covered Loans [Member] | Ungraded [Member] | Consumer And Other [Member] |  |  |  |  |  |
Covered under loss share agreements | 412 |  | 728 |  | 797 |
Noncovered Loans [Member] |  |  |  |  |  |
Noncovered loans | 11,489,529 |  | 11,581,637 |  | 11,392,351 |
Noncovered Loans [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 3,659,488 |  | 3,715,065 |  | 3,845,633 |
Noncovered Loans [Member] | Construction and Land Development [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 346,557 |  | 381,163 |  | 373,769 |
Noncovered Loans [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 132,677 |  | 137,271 |  | 145,864 |
Noncovered Loans [Member] | Commercial Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 5,127,948 |  | 5,104,993 |  | 4,763,393 |
Noncovered Loans [Member] | Other Commercial Real Estate [Member] |  |  |  |  |  |
Noncovered loans | 150,316 |  | 144,771 |  | 147,150 |
Noncovered Loans [Member] | Commercial And Industrial [Member] |  |  |  |  |  |
Noncovered loans | 1,739,724 |  | 1,764,407 |  | 1,792,042 |
Noncovered Loans [Member] | Lease Financing [Member] |  |  |  |  |  |
Noncovered loans | 315,704 |  | 312,869 |  | 295,994 |
Noncovered Loans [Member] | Other Loans [Member] |  |  |  |  |  |
Noncovered loans | 149,792 |  | 158,369 |  | 174,370 |
Noncovered Loans [Member] | Residential Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 793,612 |  | 784,118 |  | 808,650 |
Noncovered Loans [Member] | Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 793,612 |  | 784,118 |  | 808,650 |
Noncovered Loans [Member] | Revolving Mortgage [Member] |  |  |  |  |  |
Noncovered loans | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Noncovered Loans [Member] | Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 2,282,138 |  | 2,296,306 |  | 2,299,668 |
Noncovered Loans [Member] | Consumer [Member] |  |  |  |  |  |
Noncovered loans | 451,061 |  | 497,370 |  | 591,451 |
Noncovered Loans [Member] | Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 451,061 |  | 497,370 |  | 591,451 |
Noncovered Loans [Member] | Current [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 3,614,484 |  | 3,670,540 |  | 3,788,675 |
Noncovered Loans [Member] | Current [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 130,561 |  | 135,774 |  | 142,423 |
Noncovered Loans [Member] | Current [Member] | Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 763,411 |  | 757,113 |  | 777,982 |
Noncovered Loans [Member] | Current [Member] | Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 2,274,091 |  | 2,286,511 |  | 2,287,726 |
Noncovered Loans [Member] | Current [Member] | Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 446,421 |  | 491,142 |  | 580,544 |
Noncovered Loans [Member] | 31 to 60 Days Past Due [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 19,043 |  | 19,539 |  | 29,928 |
Noncovered Loans [Member] | 31 to 60 Days Past Due [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 808 |  | 798 |  | 1,116 |
Noncovered Loans [Member] | 31 to 60 Days Past Due [Member] | Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 14,001 |  | 11,790 |  | 16,439 |
Noncovered Loans [Member] | 31 to 60 Days Past Due [Member] | Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 2,349 |  | 3,437 |  | 5,462 |
Noncovered Loans [Member] | 31 to 60 Days Past Due [Member] | Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 1,885 |  | 3,514 |  | 6,911 |
Noncovered Loans [Member] | 61 to 90 Days Past Due [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 5,498 |  | 6,126 |  | 8,072 |
Noncovered Loans [Member] | 61 to 90 Days Past Due [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 446 |  | 127 |  | 364 |
Noncovered Loans [Member] | 61 to 90 Days Past Due [Member] | Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 2,812 |  | 2,686 |  | 2,207 |
Noncovered Loans [Member] | 61 to 90 Days Past Due [Member] | Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 1,212 |  | 2,042 |  | 3,285 |
Noncovered Loans [Member] | 61 to 90 Days Past Due [Member] | Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 1,028 |  | 1,271 |  | 2,216 |
Noncovered Loans [Member] | Over 90 Days Past Due [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 20,463 |  | 18,860 |  | 18,958 |
Noncovered Loans [Member] | Over 90 Days Past Due [Member] | Construction and Land Development [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 862 |  | 572 |  | 1,961 |
Noncovered Loans [Member] | Over 90 Days Past Due [Member] | Residential Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 13,388 |  | 12,529 |  | 12,022 |
Noncovered Loans [Member] | Over 90 Days Past Due [Member] | Revolving Mortgage [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | 4,486 |  | 4,316 |  | 3,195 |
Noncovered Loans [Member] | Over 90 Days Past Due [Member] | Consumer [Member] | Non-Commercial Loans [Member] |  |  |  |  |  |
Noncovered loans | $ 1,727 |  | $ 1,443 |  | $ 1,780 |
[1] | Unaudited
[2] | Derived from 2011 Annual Report on Form 10-K.

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- Definition Covered Under Loss Share Agreement In Loans And Leases + References No definition available. + Details
Name: | fcnca_CoveredUnderLossShareAgreementInLoansAndLeases
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Reflects the aggregate gross carrying amount of all categories of loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on loans and leases. These loans are not covered under loss share agreements with the FDIC since not acquired in FDIC-assisted transaction. + References No definition available. + Details
Name: | fcnca_NotCoveredUnderLossShareAgreementsInLoansAndLeases
Namespace Prefix: | fcnca_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant