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Fair Value of Financial Instruments (Carrying and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Fixed maturity AFS securities | $ 118,746 | $ 123,044
Trading securities | 4,482 | 4,501
Equity securities | 318 | 129
Mortgage loans on real estate | 17,991 | 16,763
Derivative investments | 5,437 | 3,109
Other investments | 4,292 | 3,984
Other contract holder funds: |  |
Benefit Plans' Assets | 1,734 | 1,736
Carrying Value [Member] |  |
Assets |  |
Trading securities | 4,482 | 4,501
Equity securities | 318 | 129
Mortgage loans on real estate | 17,991 | 16,763
Derivative investments | 5,437 | 3,109
Other investments | 4,284 | 3,974
Cash and invested cash | 2,612 | 1,708
Other assets - GLB embedded derivatives | 1,963 | 450
Other assets - GLB ceded embedded derivatives | 56 | 82
Indexed annuity ceded embedded derivatives | 528 | 550
Separate account assets | 182,583 | 167,965
Other contract holder funds: |  |
Remaining guaranteed interest and similar contracts | (1,788) | (1,854)
Account values of certain investment contracts | (41,194) | (40,947)
Short-term debt | (300) |
Long-term debt | (6,325) | (6,682)
Reinsurance related embedded derivatives | (206) | (392)
Fair Value [Member] |  |
Assets |  |
Trading securities | 4,482 | 4,501
Equity securities | 318 | 129
Mortgage loans on real estate | 18,700 | 18,219
Derivative investments | 5,437 | 3,109
Other investments | 4,284 | 3,974
Cash and invested cash | 2,612 | 1,708
Other assets - GLB embedded derivatives | 1,963 | 450
Other assets - GLB ceded embedded derivatives | 56 | 82
Indexed annuity ceded embedded derivatives | 528 | 550
Separate account assets | 182,583 | 167,965
Other contract holder funds: |  |
Remaining guaranteed interest and similar contracts | (1,788) | (1,854)
Account values of certain investment contracts | (47,862) | (49,745)
Short-term debt | (302) |
Long-term debt | (6,707) | (7,067)
Reinsurance related embedded derivatives | (206) | (392)
Fixed Maturity AFS Securities [Member] | Carrying Value [Member] |  |
Assets |  |
Fixed maturity AFS securities | 118,746 | 123,044
Fixed Maturity AFS Securities [Member] | Fair Value [Member] |  |
Assets |  |
Fixed maturity AFS securities | 118,746 | 123,044
Future Contract Benefits [Member] | Carrying Value [Member] |  |
Future contract benefits: |  |
Indexed annuity and IUL contracts embedded derivatives | (6,131) | (3,594)
Future Contract Benefits [Member] | Fair Value [Member] |  |
Future contract benefits: |  |
Indexed annuity and IUL contracts embedded derivatives | (6,131) | (3,594)
Other Liabilities [Member] | Carrying Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - derivative liabilities | (677) | (906)
Other Liabilities [Member] | Fair Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - derivative liabilities | (677) | $ (906)
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Carrying Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives | (182) |
Other Liabilities [Member] | GLB Ceded Embedded Derivatives [Member] | Fair Value [Member] |  |
Other contract holder funds: |  |
Other liabilities - GLB embedded derivatives | $ (182) |

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