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Separate Account Assets and Liabilities (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Separate Account, Liability [Roll Forward] |  |  |  |
Balance, beginning of period | $ 1,285 | $ 1,098 | $ 1,189 | $ 1,045
Additions (deductions): |  |  |  |
Acquisition from business combination | 0 | 0 | 0 | 0
Policyholder deposits | 15 | 18 | 35 | 39
Net investment income | 1 | 5 | 10 | 14
Net realized capital gains on investments | 16 | 62 | 112 | 114
Policyholder benefits and withdrawals | (27) | (35) | (75) | (59)
Net transfers from (to) separate accounts | (20) | 1 | 2 | (1)
Policy charges | (4) | (4) | (7) | (7)
Total changes | (19) | 47 | 77 | 100
Balance, end of period | $ 1,266 | $ 1,145 | $ 1,266 | $ 1,145

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