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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Equity:    
Common shares, par value (in dollars per share) $ 0.01 $ 0.01
Common shares, authorized (in shares) 1,250,000,000 1,250,000,000
Common shares, issued (in shares) 337,511,425 336,780,893
Treasury shares (in shares) 240,291,267 236,607,681
Ameriprise Financial    
Assets    
Investments, allowance for credit losses $ 25 $ 22
Receivables, allowance for credit losses $ 74 $ 81