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Dispositions - 2016 Disposition (Details) - MetLife U.S. Retail Advisor Force - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Jul. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Disposal Group, Including Discontinued Operation, Consideration   $ 291
Gain on Disposition of Business $ 103  
Gain on Disposition of Business, Net of Tax $ 58