XML 94 R81.htm IDEA: XBRL DOCUMENT
v3.22.0.1

EMPLOYEE BENEFIT PLANS - Schedule of Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | $ 347 | $ 341
NAV |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 7 | 6
Level 1 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 58 | 60
Level 2 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 272 | 265
Level 3 |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 10 | 10
Equity | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 10 | 19
Equity | NAV | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Equity | Level 1 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 10 | 19
Equity | Level 2 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Equity | Level 3 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Debt Securities | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 27 | 16
Debt Securities | NAV | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Debt Securities | Level 1 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 15 | 6
Debt Securities | Level 2 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 12 | 10
Debt Securities | Level 3 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 3 | 1
Cash and cash equivalents | NAV | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents | Level 1 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 3 | 1
Cash and cash equivalents | Level 2 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents | Level 3 | U.S. |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Equity | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 87 | 75
Equity | NAV | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 7 | 6
Equity | Level 1 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 20 | 22
Equity | Level 2 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 60 | 47
Equity | Level 3 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Debt Securities | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 194 | 198
Debt Securities | NAV | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Debt Securities | Level 1 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 4 | 3
Debt Securities | Level 2 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 190 | 195
Debt Securities | Level 3 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Insurance Contracts | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 15 | 15
Insurance Contracts | NAV | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Insurance Contracts | Level 1 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Insurance Contracts | Level 2 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 5 | 5
Insurance Contracts | Level 3 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 10 | 10
Cash and cash equivalents and other | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 11 | 17
Cash and cash equivalents and other | NAV | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents and other | Level 1 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 6 | 9
Cash and cash equivalents and other | Level 2 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | 5 | 8
Cash and cash equivalents and other | Level 3 | International |  |
Defined Benefit Plan Disclosure [Line Items] |  |
Fair value of plan assets | $ 0 | $ 0

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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueMeasuredAtNetAssetValuePerShareMember
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_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesUsMember
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_DefinedBenefitPlanByPlanAssetCategoriesAxis=wab_DefinedBenefitPlanDebtSecurityAndOtherUSMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DefinedBenefitPlanEquitySecuritiesNonUsMember
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: |

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

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

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