XML 178 R158.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Postretirement benefits Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | $ 5,527 |  | $ 1,341 |  |
Other Postretirement Benefits Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Amount | 69 |  | 81 |  | $ 119
Fair Value, Recurring [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 589 | [1] | 552 | [2] |
Fair Value, Recurring [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 4,236 | [1] | 399 | [2] |
Fair Value, Recurring [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 0 | [1] | 0 | [2] |
Other Investments | Other Postretirement Benefits Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Amount | 35 |  | 31 |  |
Investment Funds Limited Partnerships Partially Owned Investment Companies Fair Value [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 14,078 |  | 12,355 |  |
UNITED STATES | Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 634 |  | 538 |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 2,715 | [3] | 2,540 | [4] |
Defined Benefit Plan, Plan Assets, Amount | 3,589 |  | 3,316 |  | 4,151
Cash, including restricted cash $172 and $115 (includes VIE balances of $117 and nil) | 16 |  | 5 |  |
UNITED STATES | Pension Plan [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 1,986 | [3] | 1,798 | [4] |
UNITED STATES | Pension Plan [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 729 | [3] | 742 | [4] |
UNITED STATES | Pension Plan [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 | [3] | 0 | [4] |
UNITED STATES | Pension Plan [Member] | Short-term investments |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 45 |  | 42 |  |
UNITED STATES | Pension Plan [Member] | Short-term investments | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 45 |  | 42 |  |
UNITED STATES | Pension Plan [Member] | Short-term investments | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Short-term investments | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | U.S. Treasury / Agency |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 556 |  | 541 |  |
UNITED STATES | Pension Plan [Member] | U.S. Treasury / Agency | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 470 |  | 431 |  |
UNITED STATES | Pension Plan [Member] | U.S. Treasury / Agency | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 86 |  | 110 |  |
UNITED STATES | Pension Plan [Member] | U.S. Treasury / Agency | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Debt Security, Government, Non-US [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 637 |  | 627 |  |
UNITED STATES | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 637 |  | 627 |  |
UNITED STATES | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | States, municipalities, and political subdivisions |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 6 |  | 5 |  |
UNITED STATES | Pension Plan [Member] | States, municipalities, and political subdivisions | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | States, municipalities, and political subdivisions | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 6 |  | 5 |  |
UNITED STATES | Pension Plan [Member] | States, municipalities, and political subdivisions | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 1,466 |  | 1,321 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 1,466 |  | 1,321 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Derivative |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 5 |  | 4 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Derivative | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 5 |  | 4 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Derivative | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Pension Plan [Member] | Defined Benefit Plan, Derivative | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
UNITED STATES | Investment Funds Limited Partnerships Partially Owned Investment Companies Fair Value [Member] | Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 224 |  | 233 |  |
Non - U.S. | Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | 227 |  | 201 |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 742 | [3] | 721 | [4] |
Defined Benefit Plan, Plan Assets, Amount | 986 |  | 938 |  | $ 1,318
Non - U.S. | Pension Plan [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 70 | [3] | 117 | [4] |
Non - U.S. | Pension Plan [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 668 | [3] | 600 | [4] |
Non - U.S. | Pension Plan [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 4 | [3] | 4 | [4] |
Non - U.S. | Pension Plan [Member] | Short-term investments |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 7 |  | 10 |  |
Non - U.S. | Pension Plan [Member] | Short-term investments | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 7 |  | 10 |  |
Non - U.S. | Pension Plan [Member] | Short-term investments | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
Non - U.S. | Pension Plan [Member] | Short-term investments | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
Non - U.S. | Pension Plan [Member] | Debt Security, Government, Non-US [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 457 |  | 454 |  |
Non - U.S. | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
Non - U.S. | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 457 |  | 454 |  |
Non - U.S. | Pension Plan [Member] | Debt Security, Government, Non-US [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 0 |  | 0 |  |
Non - U.S. | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 278 |  | 257 |  |
Non - U.S. | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 1 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 63 |  | 107 |  |
Non - U.S. | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 2 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 211 |  | 146 |  |
Non - U.S. | Pension Plan [Member] | Defined Benefit Plan, Equity Securities [Member] | Level 3 |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined benefit plan, fair value of plan assets excluding measured using NAV | 4 |  | 4 |  |
Non - U.S. | Investment Funds Limited Partnerships Partially Owned Investment Companies Fair Value [Member] | Pension Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Other investments | $ 17 |  | $ 16 |  |
[1] | Excluded from the table above are other investments of $702 million, principally policy loans at December 31, 2023 measured using NAV as a practical expedient
[2] | Excluded from the table above are other investments of $390 million, principally policy loans at December 31, 2022 measured using NAV as a practical expedient. (2)Excluded from the table above are Private equities of $12,355 million at December 31, 2022 measured using NAV as a practical expedient.
[3] | Excluded from the table above are $634 million and $227 million of other investments related to the U.S. Plans and Non-U.S. Plans, respectively, private equities of $224 million and $17 million in U.S. Plans and Non-U.S. Plans, respectively, measured using NAV as a practical expedient, and $16 million in cash and accrued income related to the U.S. Plans.
[4] | Excluded from the table above are $538 million and $201 million of other investments related to the U.S. Plans and Non-U.S. Plans, respectively, private equities of $233 million and $16 million in U.S. Plans and Non-U.S. Plans, respectively, measured using NAV as a practical expedient, and $5 million in cash and accrued income related to the U.S. Plans.

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits, excluding those measured using NAV as a practical expedient. + References No definition available. + Details
Name: | cb_DefinedbenefitplanfairvalueofplanassetsexcludingmeasuredusingNAV
Namespace Prefix: | cb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValue
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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of long-term investments classified as other. + References Reference 1: 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)(1)(f)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherLongTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_OtherInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=cb_InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanDerivativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |