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MRBs - Summary of Balances of Changes in Net MRB (Assets) Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | $ (2,178) |
Balance as of end-of-year | (3,814) | $ (2,178)
Variable Annuities |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | (2,180) | (662)
Balance as of beginning-of-year, before the effect of changes in non-performance risk | (881) | 1,511
Issuances | 6 | 8
Attributed fees collected | 1,520 | 1,497
Benefit payments | (34) | (64)
Effect of changes in interest rates | (1,918) | (110)
Effect of changes in equity markets | (2,277) | (3,167)
Effect of changes in equity index volatility | (88) | (593)
In-force updates and other changes in MRBs | 213 | 136
Effect of changes in future expected policyholder behavior | 7 | (33)
Effect of changes in future expected assumptions | (199) | (66)
Balance as of end-of-year, before the effect of changes in non-performance risk | (3,651) | (881)
Effect of cumulative changes in non-performance risk | (153) | (1,299)
Balance as of end-of-year | (3,804) | (2,180)
Less: ceded MRB assets (liabilities) | (379) | (238)
Balance as of end-of-year, net of reinsurance | $ (3,425) | $ (1,942)
Weighted-average age of policyholders (years) | 73 years | 72 years
Net amount at risk | $ 1,962 | $ 3,031
Variable Annuities | Cumulative Effect, Period of Adoption, Adjustment |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | (1,299) | (2,173)
Balance as of end-of-year |  | (1,299)
Fixed Annuities |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | 32 | (45)
Balance as of beginning-of-year, before the effect of changes in non-performance risk | 90 | (5)
Issuances | 0 | 0
Attributed fees collected | 31 | 32
Benefit payments | 0 | 0
Effect of changes in interest rates | (70) | (24)
Effect of changes in equity markets | (16) | (12)
Effect of changes in equity index volatility | (5) | 9
In-force updates and other changes in MRBs | 6 | 5
Effect of changes in future expected policyholder behavior | 11 | 70
Effect of changes in future expected assumptions | 18 | 15
Balance as of end-of-year, before the effect of changes in non-performance risk | 65 | 90
Effect of cumulative changes in non-performance risk | (33) | (58)
Balance as of end-of-year | 32 | 32
Less: ceded MRB assets (liabilities) | 0 | 0
Balance as of end-of-year, net of reinsurance | $ 32 | $ 32
Weighted-average age of policyholders (years) | 70 years | 68 years
Net amount at risk | $ 240 | $ 203
Fixed Annuities | Cumulative Effect, Period of Adoption, Adjustment |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | (58) | (40)
Balance as of end-of-year |  | (58)
Retirement Plan Services |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | (30) | (22)
Balance as of beginning-of-year, before the effect of changes in non-performance risk | (26) | (20)
Issuances | 0 | 0
Attributed fees collected | 8 | 6
Benefit payments | 0 | 0
Effect of changes in interest rates | (18) | 5
Effect of changes in equity markets | (8) | (13)
Effect of changes in equity index volatility | 0 | (3)
In-force updates and other changes in MRBs | 8 | 1
Effect of changes in future expected policyholder behavior | 0 | 0
Effect of changes in future expected assumptions | (6) | (2)
Balance as of end-of-year, before the effect of changes in non-performance risk | (42) | (26)
Effect of cumulative changes in non-performance risk | 0 | (4)
Balance as of end-of-year | (42) | (30)
Less: ceded MRB assets (liabilities) | 0 | 0
Balance as of end-of-year, net of reinsurance | $ (42) | $ (30)
Weighted-average age of policyholders (years) | 63 years | 63 years
Net amount at risk | $ 3 | $ 4
Retirement Plan Services | Cumulative Effect, Period of Adoption, Adjustment |  |
Market Risk Benefit [Roll Forward] |  |
Balance as of beginning-of-year | $ (4) | (2)
Balance as of end-of-year |  | $ (4)

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) (AOCI) from (increase) decrease in instrument-specific credit risk on contract or contract feature in long-duration contract issued by insurance entity protecting contract holder from other-than-nominal capital market risk and exposing insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13K -Subparagraph (k) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-13K + Details
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- Definition Amount of cash outflow to policyholder from benefit payment for contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 7B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480081/944-40-50-7B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 29G -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-29G Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 13K -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480046/944-40-55-13K + Details
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