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Debt (Tables) | 12 Months Ended
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Dec. 31, 2011
Debt Disclosure [Abstract] |
Schedule of Debt [Table Text Block] | Long-term and short-term debt consists of the following:
| December 31
| 2011 |  | 2010
| (in millions of dollars)
Senior Secured Notes, variable due 2037, callable at or above par | $ | 560.0 |  |  | $ | 634.4 |
Senior Secured Notes, variable due 2036, callable at or above par | 72.5 |  |  | 82.5 |
Notes @ 7.375% due 2032, callable at or above par | 39.5 |  |  | 39.5 |
Notes @ 6.75% due 2028, callable at or above par | 165.8 |  |  | 165.8 |
Notes @ 7.25% due 2028, callable at or above par | 200.0 |  |  | 200.0 |
Notes @ 5.625% due 2020, callable at or above par | 399.6 |  |  | 399.5 |
Notes @ 7.125% due 2016, callable at or above par | 358.8 |  |  | 335.6 |
Notes @ 6.85% due 2015, callable at or above par | 296.7 |  |  | 296.7 |
Notes @ 7.0% due 2018, non-callable | 200.0 |  |  | 200.0 |
Medium-term Notes @ 7.0% to 7.2% due 2023 to 2028, non-callable | 50.8 |  |  | 50.8 |
Junior Subordinated Debt Securities @ 7.405% due 2038 | 226.5 |  |  | 226.5 |
Long-term Debt | 2,570.2 |  |  | 2,631.3 |
Securities Lending Agreements - See Note 3 | 312.3 |  |  | — |
Notes @ 7.625% due 2011 | — |  |  | 225.1 |
Short-term Debt | 312.3 |  |  | 225.1 |
Total | $ | 2,882.5 |  |  | $ | 2,856.4 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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