XML 121 R101.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Goodwill, Other intangible assets, and Value of business acquired (VOBA) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
VOBA Roll Forward |  |  |  |
VOBA balance, beginning of year |  | $ 3,702 | $ 235 | $ 263
Amortization of Value of Business Acquired (VOBA) | [1] | (281) | (149) | (23)
Foreign exchange revaluation and other |  | (56) | (17) | (5)
VOBA balance, end of year |  | 3,674 | 3,702 | 235
Present Value of Future Insurance Profit [Line Items] |  |  |  |
present value of future insurance |  | 1,035 |  |
Huatai Group [Member] |  |  |  |
VOBA Roll Forward |  |  |  |
Present Value of Future Insurance Profits, Addition from Acquisition |  | 309 | 0 | 0
Present Value of Future Insurance Profit [Line Items] |  |  |  |
Present Value of Future Insurance Profits, Addition from Acquisition |  | 309 | 0 | 0
Cigna's Life Insurance Business in Asian Markets |  |  |  |
VOBA Roll Forward |  |  |  |
Present Value of Future Insurance Profits, Addition from Acquisition |  | 0 | 3,633 | 0
Present Value of Future Insurance Profit [Line Items] |  |  |  |
Present Value of Future Insurance Profits, Addition from Acquisition |  | $ 0 | $ 3,633 | $ 0
[1] | Recognized in Policy acquisition costs in the Consolidated statements of operations.

X
- Definition Present Value of Future Insurance Profits, Expected Amortization, Total + References No definition available. + Details
Name: | cb_PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal
Namespace Prefix: | cb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The adjustment that represents the periodic charge against earnings to reduce the value of business acquired (VOBA) over the expected life of the underlying insurance contracts. VOBA reflects the estimated fair value of a life insurance business in force and represents the portion of the cost to acquire the business that is allocated to the value of the right to receive future cash flows from insurance contracts existing at the date of acquisition. Such value is the present value of the actuarially determined projected cash flows for the acquired policies. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 + Details
Name: | us-gaap_AmortizationOfValueOfBusinessAcquiredVOBA
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInPresentValueOfFutureInsuranceProfitsRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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/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 + Details
Name: | us-gaap_PresentValueOfFutureInsuranceProfitLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of addition for present value of future profits of insurance contract acquired in business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479735/944-20-S99-2 + Details
Name: | us-gaap_PresentValueOfFutureInsuranceProfitsAdditionsFromAcquisitions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of foreign currency translation gain (loss) which increases (decreases) present value of future profits of insurance contract acquired in business combination. + References No definition available. + Details
Name: | us-gaap_PresentValueOfFutureInsuranceProfitsForeignCurrencyTranslationGainLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of present value of future profits of insurance contract acquired in business combination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479735/944-20-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -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 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
Name: | us-gaap_ValueOfBusinessAcquiredVOBA
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=cb_HuataiGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=cb_CignasLifeInsuranceBusinessInAsianMarketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |