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SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Balance Sheet - Parenthetical) (Details 2) - USD ($)
$ / shares in Units, $ in Millions
Dec. 31, 2018
Dec. 31, 2017
Accumulated depreciation $ 2,000 $ 1,900
Common shares, par value (in dollars per share) $ 0.01 $ 0.01
Common shares, shares authorized 1,250,000,000 1,250,000,000
Common shares, shares issued 328,537,214 327,506,935
Treasury shares 192,206,467 180,872,271
Ameriprise Financial, Inc:    
Accumulated depreciation $ 1,168 $ 1,111
Common shares, par value (in dollars per share) $ 0.01 $ 0.01
Common shares, shares authorized 1,250,000,000 1,250,000,000
Common shares, shares issued 328,537,214 327,506,935
Treasury shares 192,206,467 180,872,271