| **Stockholders' Equity and Statutory Accounting Practices (Tables)**   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| **Stockholders' Equity and Statutory Accounting Practices [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
| Combined statutory capital and surplus and net income (loss)           | Statutory Information Statutory Capital and Surplus Statutory Net Income (Loss) December 31 Years ended December 31(In millions)2013 (b) 2012 2013 (b) 2012 2011Combined Continental Casualty Companies (a)$11,137 $9,998 $913 $391 $954Life company597 556 48 44 29________________(a) Represents the combined statutory surplus of CCC and its subsidiaries, including the life company.(b)Information derived from the statutory-basis financial statements to be filed with insurance regulators. |

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| - Definition
Schedule of statutory net income and capital and surplus, determined in accordance with statutory accounting practices prescribed or permitted by insurance regulatory authorities.
+ References
No definition available.
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