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Variable Annuity and Insurance Guarantees (Separate Account Balance by Type) (Details 5) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Mutual funds |  |
Distribution of separate account balances by asset type for variable annuity contracts providing guaranteed benefits: |  |
Total mutual funds | $ 78,931 | $ 74,584
Equity |  |
Distribution of separate account balances by asset type for variable annuity contracts providing guaranteed benefits: |  |
Total mutual funds | 45,947 | 44,739
Bond |  |
Distribution of separate account balances by asset type for variable annuity contracts providing guaranteed benefits: |  |
Total mutual funds | 26,073 | 23,374
Other |  |
Distribution of separate account balances by asset type for variable annuity contracts providing guaranteed benefits: |  |
Total mutual funds | $ 6,911 | $ 6,471

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