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Reserve for Unpaid Losses and Loss Adjustment Expenses - Discounted Reserves, P&C (Details) - Property and Casualty Insurance Products - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Weighted Average Discount Rate [Line Items] |  |  |
Liability for unpaid losses and loss adjustment expenses, at undiscounted amounts | $ 1,405 | $ 1,334 | $ 1,331
Amount of discount | 355 | 367 | 388
Carrying value of liability for unpaid losses and loss adjustment expenses | 1,050 | 967 | 943
Discount accretion included in losses and loss adjustment expenses | $ 36 | $ 36 | $ 33
Minimum |  |  |
Weighted Average Discount Rate [Line Items] |  |  |
Discount Rate | 0.83% | 0.83% | 1.76%
Maximum |  |  |
Weighted Average Discount Rate [Line Items] |  |  |
Discount Rate | 14.03% | 14.03% | 14.03%
Weighted Average Expected Life |  |  |
Weighted Average Discount Rate [Line Items] |  |  |
Discount Rate | 2.54% | 2.68% | 2.91%

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- Definition The carrying amount as of the balance sheet date of loss reserves carried at present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.N.Q1) -URI http://asc.fasb.org/extlink&oid=122135039&loc=d3e569934-122904 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116884468&loc=d3e14881-158438 + Details
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- Definition Discount rate used to obtain present value of liability for unpaid claim and claim adjustment expense for short-duration contract issued by insurance entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116884468&loc=d3e14881-158438 + Details
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- Definition Amount of cumulative discount related to the time value of money deducted from short-duration insurance contract liabilities that are reported at present value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116884468&loc=d3e14881-158438 + Details
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