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Derivatives and Hedging Activites (Option Pay/Rec) (Details 3) $ in Millions | Sep. 30, 2019 USD ($)
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Summary of Option Premiums Payable and Receivable |  |
Premiums payable | $ 1,359 |
Premiums receivable | 605 |
2019 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 141 | [1]
Premiums receivable | 98 | [1]
2020 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 232 |
Premiums receivable | 134 |
2021 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 186 |
Premiums receivable | 113 |
2022 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 221 |
Premiums receivable | 200 |
2023 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 142 |
Premiums receivable | 43 |
2024-2028 [Member] |  |
Summary of Option Premiums Payable and Receivable |  |
Premiums payable | 437 |
Premiums receivable | $ 17 |
[1] | 2019 amounts represent the amounts payable and receivable for the period from October 1, 2019 to December 31, 2019.

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- Definition The amount of payments the entity is scheduled to make for deferred premium option contracts. + References No definition available. + Details
Name: | amp_PremiumsPayableForDerivativesOptionContracts
Namespace Prefix: | amp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Premiums Receivable For Derivatives Option Contracts + References No definition available. + Details
Name: | amp_PremiumsReceivableForDerivativesOptionContracts
Namespace Prefix: | amp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | amp_SummaryOfOptionPremiumsPayableAndReceivableLineItems
Namespace Prefix: | amp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_CurrentYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_DueInOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_DueInTwoYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_DueInThreeYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_DueInFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | amp_PremiumsForDerivativeOptionAxis=amp_DueAfterFourYearsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |