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CONSOLIDATED BALANCE SHEETS PARENTHETICAL - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Statement of Financial Position [Abstract] |  |
Available for Sale at Fair value - Amortized cost | $ 55,873 | $ 49,548
Preferred stock par value | $ 0.01 |
Preferred stock shares authorized | 10,000,000 |
Common stock par value | $ 0.01 | $ 0.01
Common stock shares authorized | 140,000,000 |
Common Stock, Shares, Issued | 85,310,598 | 85,310,598
Treasury Shares Held | 18,139,868 | 17,353,697
Allowances for Loan and Lease Losses, Real Estate | $ 35 | $ 64
Financing Receivable, Allowance for Credit Loss | $ 31 | $ 20

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- Definition The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123605502&loc=d3e21338-158488 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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