XML 116 R96.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Deferred acquisition costs (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | $ 7,152 | $ 6,031 |
Balance – beginning of period | 6,031 |  |
Amortization expense | (8,259) | (7,339) | $ (6,758)
Balance - end of period | 7,152 | 6,031 |
Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Amortization expense | (1,089) | (785) | (552)
Overseas General Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Amortization expense | (3,113) | (2,818) | (2,799)
Short-Duration Insurance, Other |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 3,346 | 2,877 | 2,718
Balance – beginning of period | 2,877 | 2,718 |
Balance - end of period | 3,346 | 2,877 | 2,718
Long-Duration Insurance, Other |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 3,806 | 3,154 | 2,970
Balance – beginning of period | 3,154 | 2,970 |
Balance - end of period | 3,806 | 3,154 | 2,970
Long-Duration Insurance, Other | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 3,185 | 2,514 | 2,204
Balance – beginning of period | 2,514 | 2,204 | 1,934
Capitalizations | 1,064 | 667 | 542
Amortization expense | (369) | (287) | (250)
Other (including foreign exchange) | (24) | (70) | (22)
Balance - end of period | 3,185 | 2,514 | 2,204
Long-Duration Insurance, Other | Overseas General Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 621 | 640 | 766
Balance – beginning of period | 640 | 766 |
Balance - end of period | 621 | 640 | 766
Term Life Insurance | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 402 | 324 | 250
Balance – beginning of period | 324 | 250 | 125
Capitalizations | 176 | 147 | 178
Amortization expense | (100) | (81) | (47)
Other (including foreign exchange) | 2 | 8 | (6)
Balance - end of period | 402 | 324 | 250
Universal Life | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 674 | 639 | 631
Balance – beginning of period | 639 | 631 | 557
Capitalizations | 129 | 118 | 143
Amortization expense | (80) | (64) | (61)
Other (including foreign exchange) | (14) | (46) | (8)
Balance - end of period | 674 | 639 | 631
Whole Life Insurance | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 534 | 392 | 330
Balance – beginning of period | 392 | 330 | 299
Capitalizations | 159 | 86 | 52
Amortization expense | (23) | (18) | (18)
Other (including foreign exchange) | 6 | (6) | (3)
Balance - end of period | 534 | 392 | 330
Accident and Health [Member] | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 1,301 | 891 | 730
Balance – beginning of period | 891 | 730 | 733
Capitalizations | 564 | 268 | 98
Amortization expense | (137) | (93) | (98)
Other (including foreign exchange) | (17) | (14) | (3)
Balance - end of period | 1,301 | 891 | 730
Insurance, Other [Member] | Life Insurance [Member] |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |
Deferred Policy Acquisition Cost | 274 | 268 | 263
Balance – beginning of period | 268 | 263 | 220
Capitalizations | 36 | 48 | 71
Amortization expense | (29) | (31) | (26)
Other (including foreign exchange) | (1) | (12) | (2)
Balance - end of period | $ 274 | $ 268 | $ 263

X
- Definition Amount of amortization expense (reversal of expense) for deferred policy acquisition costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479401/944-30-55-2 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479868/944-20-45-2 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(7)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-1 + Details
Name: | us-gaap_DeferredPolicyAcquisitionCostAmortizationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) in deferred policy acquisition cost due to the effect of foreign currency translation gain (loss) and increase (decrease) classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 + Details
Name: | us-gaap_DeferredPolicyAcquisitionCostForeignCurrencyTranslationAdjustmentAndOther
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479401/944-30-55-2 + Details
Name: | us-gaap_DeferredPolicyAcquisitionCostLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of deferred policy acquisition cost capitalized on contract remaining in force. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479401/944-30-55-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 825 -Topic 944 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479408/944-825-45-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B + Details
Name: | us-gaap_DeferredPolicyAcquisitionCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of deferred policy acquisition cost capitalized. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479432/944-30-50-2B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480016/944-40-65-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479401/944-30-55-2 + Details
Name: | us-gaap_DeferredPolicyAcquisitionCostsAdditions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cb_SegmentLifeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cb_SegmentInsuranceOverseasGeneralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OtherShortdurationInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OtherLongdurationInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_TermLifeInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_UniversalLifeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_WholeLifeInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_AccidentAndHealthInsuranceSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_OtherInsuranceProductLineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |