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Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Assets |  |
Fixed maturity AFS securities | $ 102,606 | $ 105,200
Trading securities | 4,019 | 4,673
Equity securities | 83 | 103
Mortgage loans on real estate | 16,791 | 16,339
Derivative investments | 4,417 | 1,911
Other investments | 4,765 | 2,994
Reinsurance related embedded derivatives | 137 |
Carrying Value [Member] |  |
Assets |  |
Trading securities | 4,019 | 4,673
Equity securities | 83 | 103
Mortgage loans on real estate | 16,791 | 16,339
Derivative investments | 4,417 | 1,911
Other investments | 4,755 | 2,983
Cash and invested cash | 6,202 | 2,563
Reinsurance related embedded derivatives | 137 |
Separate account assets | 130,617 | 153,566
Future contract benefits: |  |
Indexed annuity and IUL contracts embedded derivatives | (1,380) | (2,585)
Other contract holder funds: |  |
Remaining guaranteed interest and similar contracts | (1,884) | (1,900)
Account values of certain investment contracts | (39,744) | (38,639)
Short-term debt |  | (300)
Long-term debt | (6,748) | (6,067)
Reinsurance related embedded derivatives |  | (327)
Fair Value [Member] |  |
Assets |  |
Trading securities | 4,019 | 4,673
Equity securities | 83 | 103
Mortgage loans on real estate | 18,556 | 16,872
Derivative investments | 4,417 | 1,911
Other investments | 4,755 | 2,983
Cash and invested cash | 6,202 | 2,563
Reinsurance related embedded derivatives | 137 |
Separate account assets | 130,617 | 153,566
Future contract benefits: |  |
Indexed annuity and IUL contracts embedded derivatives | (1,380) | (2,585)
Other contract holder funds: |  |
Remaining guaranteed interest and similar contracts | (1,884) | (1,900)
Account values of certain investment contracts | (54,761) | (46,822)
Short-term debt |  | (304)
Long-term debt | (5,770) | (6,217)
Reinsurance related embedded derivatives |  | (327)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member] |  |
Assets |  |
Fixed maturity AFS securities | 102,606 | 105,200
Fixed Maturity AFS Securities [Member] | Fair Value [Member] |  |
Assets |  |
Fixed maturity AFS securities | 102,606 | 105,200
Other Assets [Member] | Carrying Value [Member] |  |
Assets |  |
Indexed annuity ceded embedded derivatives | 799 | 927
Other Assets [Member] | Fair Value [Member] |  |
Assets |  |
Indexed annuity ceded embedded derivatives | 799 | 927
Other Assets [Member] | GLB Direct Embedded Derivatives [Member] | Carrying Value [Member] |  |
Assets |  |
Other assets - GLB embedded derivatives |  | 450
Other Assets [Member] | GLB Direct Embedded Derivatives [Member] | Fair Value [Member] |  |
Assets |  |
Other assets - GLB embedded derivatives |  | 450
Other Assets [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member] |  |
Assets |  |
Other assets - GLB embedded derivatives | 728 | 60
Other Assets [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member] |  |
Assets |  |
Other assets - GLB embedded derivatives | 728 | 60
Other Liabilities [Member] | Carrying Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - derivative liabilities | (1,212) | (349)
Other Liabilities [Member] | Fair Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - derivative liabilities | (1,212) | (349)
Other Liabilities [Member] | GLB Direct Embedded Derivatives [Member] | Carrying Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives | (4,596) |
Other Liabilities [Member] | GLB Direct Embedded Derivatives [Member] | Fair Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives | $ (4,596) |
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives |  | (9)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives |  | $ (9)

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