XML 66 R53.htm IDEA: XBRL DOCUMENT
v3.22.4

Investments (Securities in a gross unrealized loss position) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | $ 25,234 | $ 5,695
Gross Unrealized Losses, Less than 12 Months | 2,946 | 92
Estimated Fair Value, 12 Months or Longer | 4,277 | 370
Gross Unrealized Losses, 12 Months or Longer | 1,110 | 20
Estimated Fair Value, Total | 29,511 | 6,065
Gross Unrealized Losses, Total | 4,056 | 112
Corporate and other bonds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 15,946 | 2,389
Gross Unrealized Losses, Less than 12 Months | 1,585 | 48
Estimated Fair Value, 12 Months or Longer | 1,634 | 136
Gross Unrealized Losses, 12 Months or Longer | 424 | 8
Estimated Fair Value, Total | 17,580 | 2,525
Gross Unrealized Losses, Total | 2,009 | 56
States, municipalities and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 4,079 | 730
Gross Unrealized Losses, Less than 12 Months | 769 | 14
Estimated Fair Value, 12 Months or Longer | 456 | 0
Gross Unrealized Losses, 12 Months or Longer | 170 | 0
Estimated Fair Value, Total | 4,535 | 730
Gross Unrealized Losses, Total | 939 | 14
Residential mortgage-backed |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 1,406 | 1,043
Gross Unrealized Losses, Less than 12 Months | 144 | 8
Estimated Fair Value, 12 Months or Longer | 1,143 | 0
Gross Unrealized Losses, 12 Months or Longer | 303 | 0
Estimated Fair Value, Total | 2,549 | 1,043
Gross Unrealized Losses, Total | 447 | 8
Commercial mortgage-backed |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 1,167 | 527
Gross Unrealized Losses, Less than 12 Months | 159 | 7
Estimated Fair Value, 12 Months or Longer | 408 | 167
Gross Unrealized Losses, 12 Months or Longer | 96 | 12
Estimated Fair Value, Total | 1,575 | 694
Gross Unrealized Losses, Total | 255 | 19
Other asset-backed |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 2,087 | 840
Gross Unrealized Losses, Less than 12 Months | 262 | 10
Estimated Fair Value, 12 Months or Longer | 542 | 62
Gross Unrealized Losses, 12 Months or Longer | 99 | 0
Estimated Fair Value, Total | 2,629 | 902
Gross Unrealized Losses, Total | 361 | 10
Asset-backed |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 4,660 | 2,410
Gross Unrealized Losses, Less than 12 Months | 565 | 25
Estimated Fair Value, 12 Months or Longer | 2,093 | 229
Gross Unrealized Losses, 12 Months or Longer | 498 | 12
Estimated Fair Value, Total | 6,753 | 2,639
Gross Unrealized Losses, Total | 1,063 | 37
U.S. Treasury and obligations of government-sponsored enterprises |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 76 | 69
Gross Unrealized Losses, Less than 12 Months | 1 | 3
Estimated Fair Value, 12 Months or Longer | 16 | 5
Gross Unrealized Losses, 12 Months or Longer | 1 | 0
Estimated Fair Value, Total | 92 | 74
Gross Unrealized Losses, Total | 2 | 3
Foreign government |  |
Debt Securities, Available-for-sale [Line Items] |  |
Estimated Fair Value, Less than 12 months | 473 | 97
Gross Unrealized Losses, Less than 12 Months | 26 | 2
Estimated Fair Value, 12 Months or Longer | 78 | 0
Gross Unrealized Losses, 12 Months or Longer | 17 | 0
Estimated Fair Value, Total | 551 | 97
Gross Unrealized Losses, Total | $ 43 | $ 2

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ResidentialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ForeignGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |