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Annual report pursuant to Section 13 and 15(d)

Goodwill and Other Intangible Assets Other Intangibles (Details)

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Goodwill and Other Intangible Assets Other Intangibles (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items] Ìý Ìý Ìý
Amortization of Intangible Assets $ 23 $ 32 $ 48
Future Amortization Expense, Year One 20 Ìý Ìý
Future Amortization Expense, Year Two 15 Ìý Ìý
Future Amortization Expense, Year Three 12 Ìý Ìý
Future Amortization Expense, Year Four 10 Ìý Ìý
Future Amortization Expense, Year Five $ 10 Ìý Ìý