Quarterly report pursuant to Section 13 or 15(d)

Sale of Wealth Management Businesses (Details)

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Sale of Wealth Management Businesses (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Sep. 30, 2013
Equity Method Investee [Member]
Jun. 30, 2013
Equity Method Investee [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Gain (loss) on sale of business $ (71) $ 0 $ 90 $ (71)