XML 77 R64.htm IDEA: XBRL DOCUMENT
v3.24.2

Deferred acquisition costs (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | $ 7,812 | $ 6,666 | $ 7,812 | $ 6,666
Balance – beginning of period |  |  | 7,152 |
Amortization expense | (2,226) | (2,016) | (4,433) | (3,964)
Balance - end of period | 7,812 | 6,666 | 7,812 | 6,666
Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Amortization expense | (300) | (277) | (594) | (550)
Overseas General Insurance [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Amortization expense | (842) | (746) | (1,665) | (1,459)
Short-Duration Insurance, Other |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 3,646 | 3,187 | 3,646 | 3,187
Balance - end of period | 3,646 | 3,187 | 3,646 | 3,187
Long-Duration Insurance, Other |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 4,166 | 3,479 | 4,166 | 3,479
Balance - end of period | 4,166 | 3,479 | 4,166 | 3,479
Long-Duration Insurance, Other | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 3,574 | 2,828 | 3,574 | 2,828
Balance – beginning of period |  |  | 3,185 | 2,514
Capitalizations |  |  | 685 | 458
Amortization expense |  |  | (214) | (173)
Other (including foreign exchange) |  |  | (82) | 29
Balance - end of period | 3,574 | 2,828 | 3,574 | 2,828
Long-Duration Insurance, Other | Overseas General Insurance [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 592 | 651 | 592 | 651
Balance - end of period | 592 | 651 | 592 | 651
Term Life Insurance | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 436 | 370 | 436 | 370
Balance – beginning of period |  |  | 402 | 324
Capitalizations |  |  | 98 | 84
Amortization expense |  |  | (58) | (50)
Other (including foreign exchange) |  |  | (6) | 12
Balance - end of period | 436 | 370 | 436 | 370
Universal Life | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 680 | 665 | 680 | 665
Balance – beginning of period |  |  | 674 | 639
Capitalizations |  |  | 70 | 54
Amortization expense |  |  | (39) | (37)
Other (including foreign exchange) |  |  | (25) | 9
Balance - end of period | 680 | 665 | 680 | 665
Whole Life Insurance | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 673 | 453 | 673 | 453
Balance – beginning of period |  |  | 534 | 392
Capitalizations |  |  | 170 | 62
Amortization expense |  |  | (17) | (11)
Other (including foreign exchange) |  |  | (14) | 10
Balance - end of period | 673 | 453 | 673 | 453
Accident and Health Insurance Product Line [Member] | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 1,496 | 1,076 | 1,496 | 1,076
Balance – beginning of period |  |  | 1,301 | 891
Capitalizations |  |  | 311 | 249
Amortization expense |  |  | (86) | (62)
Other (including foreign exchange) |  |  | (30) | (2)
Balance - end of period | 1,496 | 1,076 | 1,496 | 1,076
Insurance, Other | Segment Life [Member] |  |  |  |
Deferred Policy Acquisition Cost [Line Items] |  |  |  |
Deferred Policy Acquisition Cost | 289 | 264 | 289 | 264
Balance – beginning of period |  |  | 274 | 268
Capitalizations |  |  | 36 | 9
Amortization expense |  |  | (14) | (13)
Other (including foreign exchange) |  |  | (7) | 0
Balance - end of period | $ 289 | $ 264 | $ 289 | $ 264

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/1943274/2147477250/944-220-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 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 + 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/1943274/2147478777/944-210-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/1943274/2147478219/944-825-45-1 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: |