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Policyholder Account Balances, Future Policy Benefits and Claims - Change in Unearned Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Deferred Income [Roll Forward] |  |  |
Beginning balance | $ 410 | $ 333 | $ 263
Deferral of revenue | 112 | 104 | 92
Amortization | (33) | (27) | (22)
Ending balance | 489 | 410 | 333
Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance | 27 | 26 | 24
Deferral of revenue | 1 | 2 | 3
Amortization | (1) | (1) | (1)
Ending balance | 27 | 27 | 26
Variable Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance | 150 | 112 | 86
Deferral of revenue | 59 | 48 | 34
Amortization | (13) | (10) | (8)
Ending balance | 196 | 150 | 112
Indexed Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance | 233 | 195 | 153
Deferral of revenue | 52 | 54 | 55
Amortization | (19) | (16) | (13)
Ending balance | $ 266 | $ 233 | 195
Previously Reported |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 95
Previously Reported | Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 19
Previously Reported | Variable Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 76
Previously Reported | Indexed Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 0
Effect of shadow reserve adjustments |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 168
Effect of shadow reserve adjustments | Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 5
Effect of shadow reserve adjustments | Variable Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | 10
Effect of shadow reserve adjustments | Indexed Universal Life Insurance |  |  |
Deferred Income [Roll Forward] |  |  |
Beginning balance |  |  | $ 153

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- Definition Amount of deferred income excluding obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 25 -Paragraph 2 -SubTopic 10 -Topic 470 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481174/470-10-25-2 + Details
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- Definition Amount of increase in deferred income not accounted for under Topic 606. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 + Details
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