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FAIR VALUE (Details) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified | Jun. 30, 2012 | Dec. 31, 2011
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Fair Value Measurements |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | $ 1,873,739 | $ 3,072,578
Derivatives liabilities | (31,740) | (24,164)
Fair Value Measurements | Equity swap agreements |  |
Investment securities available-for-sale |  |
Derivative assets | 204 | 202
Fair Value Measurements | Foreign exchange options |  |
Investment securities available-for-sale |  |
Derivative assets | 4,264 | 3,899
Fair Value Measurements | Interest rate swaps |  |
Investment securities available-for-sale |  |
Derivative assets | 28,582 | 20,474
Fair Value Measurements | Short-term foreign exchange contracts |  |
Investment securities available-for-sale |  |
Short-term foreign exchange contracts | 877 | 1,403
Fair Value Measurements | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 72,188 | 20,725
Fair Value Measurements | U.S. Government agency and U.S. Government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 359,724 | 576,578
Fair Value Measurements | U.S. Government agency and U.S. Government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 48,689 | 49,315
Fair Value Measurements | U.S. Government agency and U.S. Government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 876,244 | 993,770
Fair Value Measurements | Municipal securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 65,782 | 79,946
Fair Value Measurements | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 426,055 | 1,322,561
Fair Value Measurements | Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 14,919 | 19,615
Fair Value Measurements | Other securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 10,138 | 10,068
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 72,188 | 20,725
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 72,188 | 20,725
Significant Other Observable Inputs (Level 2) |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 1,799,129 | 3,049,618
Derivatives liabilities | (28,926) | (21,530)
Significant Other Observable Inputs (Level 2) | Equity swap agreements |  |
Investment securities available-for-sale |  |
Derivative assets | 204 | 202
Significant Other Observable Inputs (Level 2) | Foreign exchange options |  |
Investment securities available-for-sale |  |
Derivative assets | 4,264 | 3,899
Significant Other Observable Inputs (Level 2) | Interest rate swaps |  |
Investment securities available-for-sale |  |
Derivative assets | 28,582 | 20,474
Significant Other Observable Inputs (Level 2) | Short-term foreign exchange contracts |  |
Investment securities available-for-sale |  |
Short-term foreign exchange contracts | 877 | 1,403
Significant Other Observable Inputs (Level 2) | U.S. Government agency and U.S. Government sponsored enterprise debt securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 359,724 | 576,578
Significant Other Observable Inputs (Level 2) | U.S. Government agency and U.S. Government sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 48,689 | 49,315
Significant Other Observable Inputs (Level 2) | U.S. Government agency and U.S. Government sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 876,244 | 993,770
Significant Other Observable Inputs (Level 2) | Municipal securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 65,782 | 79,946
Significant Other Observable Inputs (Level 2) | Corporate debt securities | Investment grade |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 426,055 | 1,322,561
Significant Other Observable Inputs (Level 2) | Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 12,497 | 17,380
Significant Other Observable Inputs (Level 2) | Other securities |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 10,138 | 10,068
Significant Unobservable Inputs (Level 3) |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | 2,422 | 2,235
Derivatives liabilities | (2,814) | (2,634)
Significant Unobservable Inputs (Level 3) | Corporate debt securities | Non-investment grade |  |
Investment securities available-for-sale |  |
Total investment securities available-for-sale | $ 2,422 | $ 2,235

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 12 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6379932&loc=d3e22054-111558 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Available-for-Sale Securities -URI http://asc.fasb.org/extlink&oid=6505594 + Details
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