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Other Intangible Assets Schedule of Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified | Mar. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Finite-lived intangible assets | $ 79 | $ 83
Accumulated amortization | 54 | 43
Indefinite-lived intangible assets | 69 | 73
Total other intangible assets | 148 | 156
Total intangible assets, accumulated amortization | 54 | 43
Value of business acquired [Member] |  |
Finite-lived intangible assets | 59 | 62
Accumulated amortization | 52 | 43
Trade name [Member] |  |
Finite-lived intangible assets | 8 | 8
Accumulated amortization | 1 |
Distribution channel [Member] |  |
Finite-lived intangible assets | 12 | 13
Accumulated amortization | $ 1 |

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