| **Other Intangible Assets (Tables)**               | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
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| **Schedule of Other Intangible Assets [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Schedule of other intangible assets                | Other intangible assets are presented in the following table. March 31, 2013 December 31, 2012(In millions)Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated AmortizationFinite-lived intangible assets:       Value of business acquired$59 $52 $62 $43Trade name8 1 8 —Distribution channel12 1 13 —Total finite-lived intangible assets79 54 83 43Indefinite-lived intangible assets69   73  Total other intangible assets$148 $54 $156 $43 |

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| - Definition
Schedule of other intangible assets [Table Text Block]
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