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Investments (Credit Losses Recognized in Earnings on Fixed Maturity Securities Held by the Company) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Balance, beginning of period | $ 31 | $ 20
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment | 42 | 27
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold | (39) | (13)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status | 4 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses | (7) | (3)
Balance, end of period | 37 | 31
Corporate Debt Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Balance, beginning of period | 26 | 17
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment | 31 | 21
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold | (32) | (10)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status | 4 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses | (6) | (2)
Balance, end of period | 27 | 26
Asset-backed Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Balance, beginning of period | 0 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment | 10 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold | 0 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status | 0 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses | 0 | 0
Balance, end of period | 10 | 0
Commercial Mortgage Backed Securities [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Balance, beginning of period | 1 | 3
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment | 0 | 1
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold | 0 | (2)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status | 0 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses | (1) | (1)
Balance, end of period | 0 | 1
Foreign Government Debt [Member] |  |
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward] |  |
Balance, beginning of period | 4 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment | 1 | 5
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold | (7) | (1)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Change in Status | 0 | 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses | (2) | 0
Balance, end of period | $ 0 | $ 4

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- Definition This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 + Details
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- Definition This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which no such other than temporary impairment (OTTI) was previously recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 + Details
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- Definition The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 + Details
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- Definition This item represents reductions in the amount of cumulative losses recognized in earnings for other than temporary impairments (OTTI) for which a portion of the impairment had been recognized in other comprehensive income (a component of shareholders' equity) due to a change in status of the impaired security because of a change in the entity's intent to either sell the impaired security or it has become more likely than not that the entity will be required to sell the security before recovery of its cost basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 + Details
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- Definition This item represents reductions in the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security because of the sale of impaired securities during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 8B -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=SL6284393-111563 + Details
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