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Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2013
Comprehensive Income [Abstract] |
Components Of Accumulated Other Comprehensive Income [Text Block] |
|  |  |  | Accumulated Other Comprehensive Income (Loss), Net of Income Tax
|  |  |  |  | Accumulated |  |  | Unrealized |  |  |  |  |  |
|  |  |  |  | Currency |  |  | Appreciation |  |  | Pension and |  |  |
|  |  |  |  | Translation |  |  | (Depreciation) |  |  | Postretirement |  |  |
|  |  |  |  | Adjustments |  |  | of Investments(1) |  |  | Benefits |  |  | Total
Balance, December 31, 2012 |  | $ | 267,475 |  | $ | 1,877,657 |  | $ | (36,230) |  | $ | 2,108,902
| Other comprehensive income (loss) before reclassifications |  |  | (14,105) |  |  | (112,711) |  |  | 99 |  |  | (126,717)
| Amounts reclassified from AOCI |  |  | -- |  |  | (6,171) |  |  | 726 |  |  | (5,445)
Net current-period other comprehensive income (loss) |  |  | (14,105) |  |  | (118,882) |  |  | 825 |  |  | (132,162)
Balance, March 31, 2013 |  | $ | 253,370 |  | $ | 1,758,775 |  | $ | (35,405) |  | $ | 1,976,740
|  |  |  | Accumulated Other Comprehensive Income (Loss), Net of Income Tax
|  |  |  |  | Accumulated |  |  | Unrealized |  |  |  |  |  |
|  |  |  |  | Currency |  |  | Appreciation |  |  | Pension and |  |  |
|  |  |  |  | Translation |  |  | (Depreciation) |  |  | Postretirement |  |  |
|  |  |  |  | Adjustments |  |  | of Investments(1) |  |  | Benefits |  |  | Total
Balance, December 31, 2011 |  | $ | 229,795 |  | $ | 1,419,318 |  | $ | (30,960) |  | $ | 1,618,153
| Change in component during the period |  |  | 24,080 |  |  | (30,721) |  |  | 290 |  |  | (6,351)
Balance, March 31, 2012 |  | $ | 253,875 |  | $ | 1,388,597 |  | $ | (30,670) |  | $ | 1,611,802
(1) | Includes cash flow hedges. See Note 5 - "Derivative Instruments" for additional information on cash flow hedges.
Reclassification Out Of Accumulated Other Comprehensive Income [Table Text Block] |
|  |  |  | Amount |  |
|  |  |  | Reclassified |  |
Details about AOCI Components |  |  | from AOCI |  | Affected Line Item in Statement of Income
Unrealized gains and losses on available-for-sale securities |  | $ | 10,348 |  | Investment related gains (losses), net
Gains and losses on cash flow hedge - interest rate swap |  |  | 305 |  | Investment income
Deferred policy acquisition costs attributed to unrealized gains and losses(1) |  |  | (1,548) |  |
|  |  |  | 9,105 |  | Total before tax
|  |  |  | (2,934) |  | Tax expense
|  |  | $ | 6,171 |  | Net of tax
Amortization of unrealized pension and postretirement benefits: |  |  |  |  |
| Prior service cost(2) |  | $ | (94) |  |
| Actuarial gains/(losses)(2) |  |  | (1,023) |  |
|  |  |  | (1,117) |  | Total before tax
|  |  |  | 391 |  | Tax benefit
|  |  | $ | (726) |  | Net of tax
Total reclassifications for the period |  | $ | 5,445 |  | Net of tax
(1) | This AOCI component is included in the computation of the deferred policy acquisition cost. See Note 8 – “Deferred policy Acquisition Costs” of the 2012 Annual Report for additional details.
(2) | These AOCI components are included in the computation of the net periodic pension cost. See Note 9 – “Employee Benefit Plans” for additional details.

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- Definition Components of accumulated other comprehensive income. + References No definition available. + Details
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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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