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Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Unobservable Inputs) (Details) - Ameriprise Financial [Member] - Fair Value, Inputs, Level 3 [Member] - Valuation Technique, Discounted Cash Flow [Member] $ in Millions | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
--- | --- | ---
Corporate debt securities [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Debt Securities, Available-for-sale |  | $ 749 | $ 912
Asset-backed Securities [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure |  | $ 5 | $ 6
Asset-backed Securities [Member] | Probability of default, Short-term [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.033 | 0.023
Asset-backed Securities [Member] | Probability of default, Long-term [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.030 |
Asset-backed Securities [Member] | Discount Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.120 | 0.115
IUL embedded derivatives [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net |  | $ 881 | $ 628
IUL embedded derivatives [Member] | Nonperformance Risk [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [1] | 0.0065 | 0.0119
Indexed annuity embedded derivatives [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net |  | $ 43 | $ 14
Indexed annuity embedded derivatives [Member] | Nonperformance Risk [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [1] | 0.0065 | 0.0119
GMWB and GMAB embedded derivatives [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net |  | $ 763 | $ 328
GMWB and GMAB embedded derivatives [Member] | Nonperformance Risk [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [1] | 0.0065 | 0.0119
Contingent Consideration Liability [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Liabilities at fair value |  | $ 44 | $ 30
Contingent Consideration Liability [Member] | Discount Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Liabilities, Fair Value Disclosure, Measurement input |  | 9.00% | 9.00%
Minimum [Member] | Corporate debt securities [Member] | Yield and Spread to Treasury [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input |  | 0.008 | 0.010
Minimum [Member] | Asset-backed Securities [Member] | Probability of default, Long-term [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  |  | 0.025
Minimum [Member] | Asset-backed Securities [Member] | Prepayment Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.050 | 0.050
Minimum [Member] | Asset-backed Securities [Member] | Loss Severity [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.364 | 0.364
Minimum [Member] | Indexed annuity embedded derivatives [Member] | Surrender Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input |  | 0.000 | 0.000
Minimum [Member] | GMWB and GMAB embedded derivatives [Member] | Surrender Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input |  | 0.001 | 0.001
Minimum [Member] | GMWB and GMAB embedded derivatives [Member] | Utilization of Guaranteed Withdrawals [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [2] | 0.000 | 0.000
Minimum [Member] | GMWB and GMAB embedded derivatives [Member] | Price Volatility [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [3] | 0.037 | 0.040
Maximum [Member] | Corporate debt securities [Member] | Yield and Spread to Treasury [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input |  | 0.028 | 0.036
Maximum [Member] | Asset-backed Securities [Member] | Probability of default, Long-term [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  |  | 0.030
Maximum [Member] | Asset-backed Securities [Member] | Prepayment Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.100 | 0.100
Maximum [Member] | Asset-backed Securities [Member] | Loss Severity [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.636 | 0.636
Maximum [Member] | Indexed annuity embedded derivatives [Member] | Surrender Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input |  | 0.500 | 0.500
Maximum [Member] | GMWB and GMAB embedded derivatives [Member] | Surrender Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input |  | 0.735 | 0.734
Maximum [Member] | GMWB and GMAB embedded derivatives [Member] | Utilization of Guaranteed Withdrawals [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [2] | 0.360 | 0.360
Maximum [Member] | GMWB and GMAB embedded derivatives [Member] | Price Volatility [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Derivative Asset (Liability) Net, Measurement Input | [3] | 0.159 | 0.161
Weighted Average [Member] | Corporate debt securities [Member] | Yield and Spread to Treasury [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Debt Securities, Available-for-sale, Measurement Input |  | 0.012 | 0.015
Weighted Average [Member] | Asset-backed Securities [Member] | Probability of default, Long-term [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  |  | 0.029
Weighted Average [Member] | Asset-backed Securities [Member] | Prepayment Rate [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.100 | 0.100
Weighted Average [Member] | Asset-backed Securities [Member] | Loss Severity [Member] |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |
Assets, Fair Value Disclosure, Measurement Input |  | 0.636 | 0.636
[1] | The nonperformance risk is the spread added to the observable interest rates used in the valuation of the embedded derivatives
[2] | The utilization of guaranteed withdrawals represents the percentage of contractholders that will begin withdrawing in any given year.
[3] | Market volatility is implied volatility of fund of funds and managed volatility funds.

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