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Debt Debt (Maturities) (Details 3) - Ameriprise Financial [Member]
$ in Millions
Dec. 31, 2016
USD ($)
Future Debt Maturities [Line Items]  
2017 $ 12
2018 13
2019 313
2020 761
2021 0
Thereafter 1,800
Total future maturities $ 2,899