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Estimated Fair Values (Estimated Fair Values For Certain Financial Assets And Financial Liabilities) (Details) (USD $) In Thousands | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2009
--- | --- | --- | --- | --- | --- | ---
Receivable from FDIC for loss share agreements | $ 522,507 | [1] | $ 624,322 | $ 623,261 | [2] | $ 692,242 | [1] | $ 687,455 | $ 249,842
Income earned not collected | 50,876 | [1] |  | 83,644 | [2] | 77,186 | [1] |  |
Stock issued by Federal Home Loan Bank | 63,730 |  |  |  |  | 71,959 |  |  |
Deposits | 17,662,966 | [1] |  | 17,635,266 | [2] | 17,787,241 | [1] |  |
Short-term borrowings | 655,808 | [1] |  | 546,597 | [2] | 541,709 | [1] |  |
Long-term obligations | 792,661 | [1] |  | 809,949 | [2] | 918,930 | [1] |  |
Carrying Value [Member] |  |  |  |  |  |  |  |  |
Cash and due from banks | 537,717 |  |  | 460,178 |  | 625,857 |  |  |
Overnight investments | 741,654 |  |  | 398,390 |  | 736,896 |  |  |
Investment securities available for sale | 4,014,241 |  |  | 4,510,076 |  | 3,768,777 |  |  |
Investment securities held to maturity | 2,098 |  |  | 2,532 |  | 3,084 |  |  |
Loans held for sale | 56,004 |  |  | 88,933 |  | 91,076 |  |  |
Loans covered by loss share agreements, net of allowance for loan and lease losses | 2,330,303 |  |  | 1,956,204 |  | 2,351,084 |  |  |
Loans and leases not covered by loss share agreements, net of allowance for loan and lease losses | 11,348,239 |  |  | 11,304,060 |  | 11,450,331 |  |  |
Receivable from FDIC for loss share agreements | 522,507 |  |  | 623,261 |  | 692,242 |  |  |
Income earned not collected | 50,876 |  |  | 83,644 |  | 77,186 |  |  |
Deposits | 17,662,966 |  |  | 17,635,266 |  | 17,787,241 |  |  |
Short-term borrowings | 655,808 |  |  | 546,597 |  | 541,709 |  |  |
Long-term obligations | 792,661 |  |  | 809,949 |  | 918,930 |  |  |
Accrued interest payable | 27,930 |  |  | 37,004 |  | 40,652 |  |  |
Carrying Value [Member] | Investment In Federal Home Loan Bank Of Atlanta Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | 45,002 |  |  | 47,123 |  | 50,688 |  |  |
Carrying Value [Member] | Investment In Federal Home Loan Bank Of San Francisco Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | 14,238 |  |  | 15,490 |  | 16,781 |  |  |
Carrying Value [Member] | Investment In Federal Home Loan Bank Of Seattle Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | 4,490 |  |  | 4,490 |  | 4,490 |  |  |
Fair Value [Member] |  |  |  |  |  |  |  |  |
Cash and due from banks | 537,717 |  |  | 460,178 |  | 625,857 |  |  |
Overnight investments | 741,654 |  |  | 398,390 |  | 736,896 |  |  |
Investment securities available for sale | 4,014,241 |  |  | 4,510,076 |  | 3,768,777 |  |  |
Investment securities held to maturity | 2,278 |  |  | 2,741 |  | 3,334 |  |  |
Loans held for sale | 56,004 |  |  | 88,933 |  | 91,076 |  |  |
Loans covered by loss share agreements, net of allowance for loan and lease losses | 2,318,304 |  |  | 1,946,423 |  | 2,296,345 |  |  |
Loans and leases not covered by loss share agreements, net of allowance for loan and lease losses | 11,213,325 |  |  | 10,995,653 |  | 10,952,196 |  |  |
Receivable from FDIC for loss share agreements | 529,514 |  |  | 624,785 |  | 692,242 |  |  |
Income earned not collected | 50,876 |  |  | 83,644 |  | 77,186 |  |  |
Deposits | 17,711,225 |  |  | 17,695,357 |  | 17,855,490 |  |  |
Short-term borrowings | 655,808 |  |  | 546,597 |  | 541,709 |  |  |
Long-term obligations | 807,407 |  |  | 826,501 |  | 933,064 |  |  |
Accrued interest payable | 27,930 |  |  | 37,004 |  | 40,652 |  |  |
Fair Value [Member] | Investment In Federal Home Loan Bank Of Atlanta Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | 45,002 |  |  | 47,123 |  | 50,688 |  |  |
Fair Value [Member] | Investment In Federal Home Loan Bank Of San Francisco Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | 14,238 |  |  | 15,490 |  | 16,781 |  |  |
Fair Value [Member] | Investment In Federal Home Loan Bank Of Seattle Stock [Member] |  |  |  |  |  |  |  |  |
Stock issued by Federal Home Loan Bank | $ 4,490 |  |  | $ 4,490 |  | $ 4,490 |  |  |
[1] | Unaudited
[2] | Derived from the 2010 Annual Report on Form 10-K.

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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 + Details
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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 includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 8, 9, 10 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8 -Footnote 2 + Details
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- Definition The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Chapter 13 -Paragraph 37, 38, 39 -IssueDate 2006-05-01 + Details
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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Chapter 12 -Paragraph 26 -IssueDate 2006-05-01 + Details
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