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Consolidated Statements of Operations and Comprehensive Income (Parenthetical) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Other comprehensive income (loss), reclassification adjustment from AOCI for sale of securities, tax | $ 6 | $ 36 | $ 0
Total net realized gains (losses) reclassified from AOCI | $ (3) | $ 281 | $ 31

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