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Derivative Financial Instruments (Tables) | 12 Months Ended
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Dec. 31, 2011
Derivative Financial Instruments [Abstract] |
Schedule Of Gain Or Loss On The Hedged Item In The Same Line Item, Other Revenue, As The Offsetting Loss Or Gain On The Related Interest Rate Swaps |
|  | Year Ended December 31, |
|  | 2011 |  |  | 2010 |  |  | 2009 |
Income Statement Classification |  | Gain (Loss) on swap |  |  | Gain (Loss) on senior notes |  |  | Gain (Loss) on swap |  |  | Gain (Loss) on senior notes |  |  | Gain (Loss) on swap |  |  | Gain (Loss) on senior notes |
|  | (Amounts in thousands) |
Other revenue |  | $ | (4,240 | ) |  | $ | 4,240 |  |  | $ | (4,232 | ) |  | $ | 4,232 |  |  | $ | (5,922 | ) |  | $ | 5,922 |
Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets |
|  | Asset Derivatives |  |  | Liability Derivatives |
|  | December 31, 2011 |  |  | December 31, 2010 |  |  | December 31, 2011 |  |  | December 31, 2010 |
|  | (Amounts in thousands) |
Hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts—Other assets (liabilities) |  | $ | 0 |  |  | $ | 4,240 |  |  | $ | 0 |  |  | $ | (1,139 | )
Non-hedging derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate contracts—Other liabilities |  | $ | 0 |  |  | $ | 0 |  |  | $ | (670 | ) |  | $ | (1,903 | )
Equity contracts—Short-term investments (Other liabilities) |  |  | 0 |  |  |  | 0 |  |  |  | (655 | ) |  |  | (2,776 | )
Total non-hedging derivatives |  | $ | 0 |  |  | $ | 0 |  |  | $ | (1,325 | ) |  | $ | (4,679 | )
Total derivatives |  | $ | 0 |  |  | $ | 4,240 |  |  | $ | (1,325 | ) |  | $ | (5,818 | )
Schedule Of Derivative Gains And Losses In The Statements Of Operations |
|  | Loss Recognized in Income |
|  | Year Ended December 31, |
Derivatives Contracts for Fair Value Hedges |  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (Amounts in thousands) |
Interest rate contracts—Interest expense |  | $ | 4,470 |  |  | $ | 7,103 |  |  | $ | 7,022 |
|  | Gain (Loss) Recognized in Other Comprehensive Income |
|  | Year Ended December 31, |
Derivatives Contracts for Cash Flow Hedges |  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (Amounts in thousands) |
Interest rate contracts—Other comprehensive gain (loss) |  | $ | 1,139 |  |  | $ | (220 | ) |  | $ | (918 | )
|  | Gain or (Loss) Recognized in Income |
|  | Year Ended December 31, |
Derivatives Not Designated as Hedging Instruments |  | 2011 |  |  | 2010 |  |  | 2009 |
|  | (Amounts in thousands) |
Interest rate contract—Other revenue (expense) |  | $ | 1,232 |  |  | $ | (457 | ) |  | $ | (1,446 | )
Equity contracts—Net realized investment gains |  |  | 9,000 |  |  |  | 4,615 |  |  |  | 7,801 |
Total |  | $ | 10,232 |  |  | $ | 4,158 |  |  | $ | 6,355 |

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- Definition Schedule of Gain or Loss on the Hedged Item in the Same Line Item, Other Revenue, as the Offsetting Loss or Gain on the Related Interest Rate Swaps [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the location and amount of gains and losses reported in the statement of financial performance, or when applicable, the statement of financial position. For example, (a) gains and losses recognized in the income statement on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges and (b) gains and losses initially recognized in other comprehensive income on derivative instruments designated and qualifying as cash flow hedges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -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. + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624163-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 205G -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 44C -Subparagraph a -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. + Details
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