XML 130 R99.htm IDEA: XBRL DOCUMENT
v3.10.0.1

ACQUISITIONS - Summary of Fair Value of Assets Acquired and Liabilities Assumed (FY) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017 | Dec. 04, 2017 | Oct. 02, 2017 | Apr. 05, 2017 | Mar. 13, 2017 | Dec. 31, 2016 | Dec. 14, 2016 | Nov. 17, 2016 | Aug. 01, 2016 | May 05, 2016
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill | $ 2,412,554 | $ 2,460,103 |  |  |  |  | $ 2,078,765 |  |  |  |
Melett |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  | $ 21,068 |  |  |  |  |  |  |  |
Property, plant & equipment |  |  | 5,917 |  |  |  |  |  |  |  |
Goodwill |  |  | 22,501 |  |  |  |  |  |  |  |
Other intangible assets |  |  | 39,259 |  |  |  |  |  |  |  |
Total assets acquired |  |  | 88,745 |  |  |  |  |  |  |  |
Total liabilities assumed |  |  | (14,789) |  |  |  |  |  |  |  |
Net assets acquired |  |  | $ 73,956 |  |  |  |  |  |  |  |
TTC |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  | $ 3,746 |  |  |  |  |  |
Property, plant & equipment |  |  |  |  | 5,909 |  |  |  |  |  |
Goodwill |  |  |  |  | 16,309 |  |  |  |  |  |
Other intangible assets |  |  |  |  | 12,300 |  |  |  |  |  |
Total assets acquired |  |  |  |  | 38,264 |  |  |  |  |  |
Total liabilities assumed |  |  |  |  | (5,753) |  |  |  |  |  |
Net assets acquired |  |  |  |  | $ 32,511 |  |  |  |  |  |
ATP |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  | $ 11,666 |  |  |  |  |
Property, plant & equipment |  |  |  |  |  | 5,354 |  |  |  |  |
Goodwill |  |  |  |  |  | 29,034 |  |  |  |  |
Other intangible assets |  |  |  |  |  | 25,000 |  |  |  |  |
Total assets acquired |  |  |  |  |  | 71,054 |  |  |  |  |
Total liabilities assumed |  |  |  |  |  | (5,800) |  |  |  |  |
Net assets acquired |  |  |  |  |  | $ 65,254 |  |  |  |  |
Workhorse |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  | $ 9,137 |  |  |
Property, plant & equipment |  |  |  |  |  |  |  | 0 |  |  |
Goodwill |  |  |  |  |  |  |  | 22,273 |  |  |
Other intangible assets |  |  |  |  |  |  |  | 21,500 |  |  |
Total assets acquired |  |  |  |  |  |  |  | 52,910 |  |  |
Total liabilities assumed |  |  |  |  |  |  |  | (9,083) |  |  |
Net assets acquired |  |  |  |  |  |  |  | $ 43,827 |  |  |
Precision Turbo |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  | $ 4,145 |  |
Property, plant & equipment |  |  |  |  |  |  |  |  | 1,317 |  |
Goodwill |  |  |  |  |  |  |  |  | 4,248 |  |
Other intangible assets |  |  |  |  |  |  |  |  | 5,200 |  |
Total assets acquired |  |  |  |  |  |  |  |  | 14,910 |  |
Total liabilities assumed |  |  |  |  |  |  |  |  | (1,057) |  |
Net assets acquired |  |  |  |  |  |  |  |  | $ 13,853 |  |
Unitrac |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |  |  | $ 11,476
Property, plant & equipment |  |  |  |  |  |  |  |  |  |  | 1,768
Goodwill |  |  |  |  |  |  |  |  |  |  | 2,442
Other intangible assets |  |  |  |  |  |  |  |  |  |  | 1,230
Total assets acquired |  |  |  |  |  |  |  |  |  |  | 16,916
Total liabilities assumed |  |  |  |  |  |  |  |  |  |  | (2,145)
Net assets acquired |  |  |  |  |  |  |  |  |  |  | $ 14,771
AM General |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  | $ 6,611 |  |  |  |  |  |  |
Property, plant & equipment |  |  |  | 4,140 |  |  |  |  |  |  |
Goodwill |  |  |  | 12,943 |  |  |  |  |  |  |
Other intangible assets |  |  |  | 12,097 |  |  |  |  |  |  |
Other assets |  |  |  | 0 |  |  |  |  |  |  |
Total assets acquired |  |  |  | 35,791 |  |  |  |  |  |  |
Total liabilities assumed |  |  |  | (25,375) |  |  |  |  |  |  |
Net assets acquired |  |  |  | $ 10,416 |  |  |  |  |  |  |
Gerken |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |  | $ 32,706 |
Property, plant & equipment |  |  |  |  |  |  |  |  |  | 7,667 |
Goodwill |  |  |  |  |  |  |  |  |  | 17,470 |
Other intangible assets |  |  |  |  |  |  |  |  |  | 30,560 |
Other assets |  |  |  |  |  |  |  |  |  | 1,706 |
Total assets acquired |  |  |  |  |  |  |  |  |  | 90,109 |
Total liabilities assumed |  |  |  |  |  |  |  |  |  | (27,262) |
Net assets acquired |  |  |  |  |  |  |  |  |  | $ 62,847 |

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_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of liabilities assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of property, plant, and equipment recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

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

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

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