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Consolidated Statements of Operations and Comprehensive Income (Parentheticals) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Income Statement [Abstract] |  |  |  |
Total net realized gains (losses) reclassified from AOCI | $ 12 | $ (33) | $ 36 | $ (352)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | $ (6) | $ (2) | $ (2) | $ (42)

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