XML 89 R78.htm IDEA: XBRL DOCUMENT v3.19.2

Fair Value Measurement and Fair Value of Financial Instruments (Detail) - Senior Notes - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
4.375% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.375%
3.45% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	3.45%
4.15% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.15%
4.7% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Stated interest rate (as a percent)	4.70%
Carrying Value | 4.375% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	$ 248,952	$ 248,823
Carrying Value | 3.45% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	748,396	748,282
Carrying Value | Floating Rate Notes 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	497,396	496,796
Carrying Value | 4.15% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	743,638	742,957
Carrying Value | 4.7% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	1,240,191	1,239,657
Fair Value | 4.375% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	259,010	254,218
Fair Value | 3.45% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	737,123	675,075
Fair Value | Floating Rate Notes 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	496,830	497,425
Fair Value | 4.15% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	792,390	729,350
Fair Value | 4.7% Senior Notes
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Debt instrument	$ 1,349,025	$ 1,179,625

X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

+ Details

Name:	us-gaap_DebtInstrumentFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
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_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wab_A4.75PercentSeniorNotesDueTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wab_SeniorNotesDue2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wab_A4.150PercentSeniorNotesDueTwentyThousandandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wab_A4.70PercentSeniorNotesDueTwentyThousandandTwentySixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=wab_FloatingRateNotesDue2021Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: