XML 93 R77.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Long-term Debt (Narrative) (Details) € in Thousands, $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 04, 2016 USD ($) | Oct. 01, 2015 USD ($) | Dec. 31, 2015 | Sep. 30, 2016 EUR (€) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2016 USD ($) | Apr. 28, 2015 USD ($)
Debt financing costs |  |  |  |  | $ 863 | $ 2,359 | $ 1,297 |  |
Amortization of debt financing costs recognized as interest expense |  |  |  |  | $ 1,165 | 1,114 | 1,014 |  |
Balance of unamortized debt issuance costs |  |  |  |  |  | 1,512 |  | $ 2,091 |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | 1,052,568 |
Outstanding borrowings |  |  |  |  |  |  |  | 156,700 |
The Notes [Member] |  |  |  |  |  |  |  |  |
Debt Covenant, Leverage Ratio, Maximum |  |  |  | 3.5 | 3.5 |  |  |  |
Debt Covenant, Calculations, Period Of Time |  |  |  | rolling four quarter basis | rolling four quarter basis |  |  |  |
Debt Covenant, Leverage Ratio During Material Acquisition Period, Maximum |  |  |  | 4.0 | 4.0 |  |  |  |
Prepayment, Maximum Percentage of Principal |  |  |  | 100.00% | 100.00% |  |  |  |
Balance of unamortized debt issuance costs |  |  |  |  |  | 1,512 |  | 2,091 |
The USD Notes [Member] |  |  |  |  |  |  |  |  |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Base Value |  |  |  |  |  |  |  | $ 800,000 |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Income |  |  |  | 50.00% |  |  |  | 50.00% |
Debt Covenant, Maximum Percentage of Priority Debt To Consolidated Net Worth |  |  |  | 25.00% | 25.00% |  |  |  |
Prepayment, Partial Payment Minimum |  |  |  |  | $ 1,000 |  |  |  |
Non Floating Rate Notes [Member] |  |  |  |  |  |  |  |  |
Prepayment, Make-Whole Amount Computation, Discount Rate Basis Points |  |  |  | 50 | 50 |  |  |  |
Debt Instrument Prepayment Make Whole Amount Computation |  |  |  | computed by discounting the remaining scheduled payments of interest and principal of the USD Notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of U.S. Treasury securities having a maturity equal to the remaining average life of the USD Notes being prepaid | computed by discounting the remaining scheduled payments of interest and principal of the USD Notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of U.S. Treasury securities having a maturity equal to the remaining average life of the USD Notes being prepaid |  |  |  |
2008 Note Purchase Agreement [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  |  | Oct. 01, 2008 | Oct. 01, 2008 |  |  |  |
Series C Notes [Member] |  |  |  |  |  |  |  |  |
Principal Payment Amount |  | $ 50,000 |  |  |  |  |  |  |
2009 Note Purchase Agreement [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  |  | Apr. 01, 2009 | Apr. 01, 2009 |  |  |  |
Series E Notes [Member] |  |  |  |  |  |  |  |  |
Principal Payment Amount | $ 57,000 |  |  |  |  |  |  |  |
2013 Note Purchase Agreement [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  |  | Oct. 01, 2013 | Oct. 01, 2013 |  |  |  |
Face Amount |  |  |  |  |  |  |  | $ 250,000 |
Debt financing costs |  |  |  |  |  |  | $ 1,297 |  |
Floating Rate Notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument Prepayment Make Whole Amount Computation |  |  |  | computed as a percentage of the principal amount of the Series J Notes equal to (a) 2%, on or prior to November 15, 2014, (b) 1%, after November 15, 2014 and on or prior to November 15, 2015, and (c) 0% after November 15, 2015 | computed as a percentage of the principal amount of the Series J Notes equal to (a) 2%, on or prior to November 15, 2014, (b) 1%, after November 15, 2014 and on or prior to November 15, 2015, and (c) 0% after November 15, 2015 |  |  |  |
Series J Notes [Member] |  |  |  |  |  |  |  |  |
Variable interest rate |  |  |  | 2.06% |  |  |  | 2.06% |
First Closing Notes [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  |  | Oct. 01, 2013 | Oct. 01, 2013 |  |  |  |
Second Closing Notes [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  | Nov. 15, 2013 | Nov. 15, 2013 | Nov. 15, 2013 |  |  |  |
2016 Note Purchase Agreements [Member] |  |  |  |  |  |  |  |  |
Issuance Date |  |  |  | Sep. 23, 2016 | Sep. 23, 2016 |  |  |  |
Face Amount | € |  |  |  | € 160,000 |  |  |  |  |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Base Value |  |  |  |  |  |  |  | $ 1,046,619 |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Income |  |  |  | 50.00% |  |  |  | 50.00% |
Prepayment, Partial Payment Minimum | € |  |  |  | € 1,000 |  |  |  |  |
Debt financing costs |  |  |  |  | $ 863 |  |  |  |
2016 Notes Subject to Swap Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument Prepayment Make Whole Amount Computation |  |  |  | adjusted for theoretical holder returns foregone on hypothetical reinvestments in U.S. Treasury securities (the "Swapped Notes") is equal to the excess of an amount equal to the remaining scheduled payments to be paid in respect of such called principal under such swap agreement discounted at a rate equal to 50 basis points and the yield to maturity of U.S. Treasury securities having a maturity equal to the remaining average life of the Swapped Notes being prepaid over the amount of payments in U.S. dollars that would be paid to the holder of the Swapped Note in respect of the called principal under the swap agreement, which amount will be increased or reduced, as applicable, in an amount equal to any net gain or loss realized by the holder of such Swapped Note on swap transactions under such swap agreement as a result of such prepayment. | adjusted for theoretical holder returns foregone on hypothetical reinvestments in U.S. Treasury securities (the "Swapped Notes") is equal to the excess of an amount equal to the remaining scheduled payments to be paid in respect of such called principal under such swap agreement discounted at a rate equal to 50 basis points and the yield to maturity of U.S. Treasury securities having a maturity equal to the remaining average life of the Swapped Notes being prepaid over the amount of payments in U.S. dollars that would be paid to the holder of the Swapped Note in respect of the called principal under the swap agreement, which amount will be increased or reduced, as applicable, in an amount equal to any net gain or loss realized by the holder of such Swapped Note on swap transactions under such swap agreement as a result of such prepayment. |  |  |  |
2016 Notes Not Subject to Swap Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument Prepayment Make Whole Amount Computation |  |  |  | computed by discounting the remaining scheduled payments of interest and principal of such notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of the German Bund having a maturity equal to the remaining average life of the 2016 Notes being prepaid | computed by discounting the remaining scheduled payments of interest and principal of such notes being prepaid at a discount rate equal to the sum of 50 basis points and the yield to maturity of the German Bund having a maturity equal to the remaining average life of the 2016 Notes being prepaid |  |  |  |
Series M Notes [Member] |  |  |  |  |  |  |  |  |
Face Amount | € |  |  |  | € 40,000 |  |  |  |  |
Series N Notes [Member] |  |  |  |  |  |  |  |  |
Face Amount | € |  |  |  | 77,000 |  |  |  |  |
Series O Notes [Member] |  |  |  |  |  |  |  |  |
Face Amount | € |  |  |  | € 43,000 |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Balance of unamortized debt issuance costs |  |  |  |  |  |  |  |  | $ 2,014
Other Foreign Short-term Borrowings [Member] |  |  |  |  |  |  |  |  |
Outstanding borrowings |  |  |  |  |  |  |  | $ 0 |
Foreign Performance Guarantee Facilities [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | 8,567 |
Outstanding borrowings |  |  |  |  |  |  |  | 0 |
Foreign Lines of Credit And Overdraft Facilities [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | 44,001 |
Outstanding borrowings |  |  |  |  |  |  |  | 0 |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | 1,000,000 |
Outstanding borrowings |  |  |  |  |  |  |  | 156,700 |
Chinese Credit Facility [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Date |  |  |  | Nov. 30, 2016 | Nov. 30, 2016 |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | 22,700 |
Outstanding borrowings |  |  |  |  |  |  |  | 0 |
Chinese Credit Facility, RMB Denominated Loan [Member] |  |  |  |  |  |  |  |  |
Variable Rate Basis |  |  |  | interest at the prevailing interest rate offered by the People's Bank of China on the date of borrowing, plus a margin equal to 15% of that prevailing rate | interest at the prevailing interest rate offered by the People's Bank of China on the date of borrowing, plus a margin equal to 15% of that prevailing rate |  |  |  |
Chinese Credit Facility, USD Denominated Loan [Member] |  |  |  |  |  |  |  |  |
Variable Rate Basis |  |  |  | interest at the lender's cost of borrowing rate at the date of borrowing, plus 3% | interest at the lender's cost of borrowing rate at the date of borrowing, plus 3% |  |  |  |
Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |
Variable Rate Basis |  |  |  | LIBOR | LIBOR |  |  |  |
Debt Covenant, Leverage Ratio, Maximum |  |  |  | 3.5 | 3.5 |  |  |  |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Base Value |  |  |  |  |  |  |  | $ 800,000 |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Income |  |  |  | 50.00% |  |  |  | 50.00% |
Debt Covenant, Minimum Consolidated Net Worth Calculation, Percentage of Net Proceeds of Issuance of Capital Stock |  |  |  | 50.00% |  |  |  | 50.00% |
Debt Covenant, Leverage Ratio During Material Acquisition Period, Maximum |  |  |  | 4.0 | 4.0 |  |  |  |
Line of Credit Facility, Expiration Date |  |  |  | Apr. 01, 2020 | Apr. 01, 2020 |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | $ 1,000,000 |
Outstanding borrowings |  |  |  |  |  | $ 350,000 |  | $ 156,700 |
Credit facility effective interest rate on outstanding borrowing |  |  |  | 1.77% |  | 1.44% |  | 1.77% |
Revolving Credit Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Basis Spread On Variable Rate |  |  |  | 0.85% | 0.85% |  |  |  |
Revolving Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Basis Spread On Variable Rate |  |  |  | 1.65% | 1.65% |  |  |  |

X
- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(8)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
Name: | us-gaap_AmortizationOfFinancingCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Date the debt instrument was issued, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentIssuanceDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of the required periodic payments applied to principal. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611 + Details
Name: | us-gaap_LineOfCreditFacilityFairValueOfAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
Name: | us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The period of time used for the calculation of debt covenants. + References No definition available. + Details
Name: | wwd_DebtCovenantCalculationsPeriodOfTime
Namespace Prefix: | wwd_
Data Type: | us-types:durationStringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Company may not permit the aggregate amount of priority debt to at any time exceed this percentage of its consolidated net worth at the end of the then most recently ended fiscal quarter to remain in compliance with this debt covenant. Priority debt generally refers to certain unsecured debt of the Company's subsidiaries and all debt of the Company and its subsidiaries secured by liens other than certain permitted liens. + References No definition available. + Details
Name: | wwd_DebtCovenantMaximumPercentageOfPriorityDebtToConsolidatedNetWorth
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The base value in the caculation of the minimum consolidated net worth of the Company for debt covenant compliance. The calculation of net worth is the base value, plus XX% of net income for any fiscal year. + References No definition available. + Details
Name: | wwd_DebtCovenantMinimumConsolidatedNetWorthCalculationBaseValue
Namespace Prefix: | wwd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The percentage of net income used in the calculation of the minimum consolidated net worth of the Company for debt covenant compliance. The calculation of net worth is the base value, plus XX% of net income for any fiscal year. + References No definition available. + Details
Name: | wwd_DebtCovenantMinimumConsolidatedNetWorthCalculationPercentageOfNetIncome
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of net proceeds of certain issuances of capital stock used in the calculation of the minimum consolidated net worth of the Company for debt covenant compliance. The calculation of net worth is the base value, plus XX% of net income for any fiscal year and XX% of the net proceeds of certain issuances of capital stock. + References No definition available. + Details
Name: | wwd_DebtCovenantMinimumConsolidatedNetWorthCalculationPercentageOfNetProceedsOfIssuanceOfCapitalStock
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum value of the Company’s ratio of consolidated net debt to consolidated earnings before interest, taxes, depreciation, amortization, and stock-based compensation, plus any unusual non-cash charges to the extent deducted in computing net income minus any unusual non-cash gains to the extent added in computing net income (leverage ratio) required for financial covenant compliance during a material acquisition period. + References No definition available. + Details
Name: | wwd_DebtCovenantRatioOfConsolidatedNetDebtToDebtCovenantEbitdaDuringMaterialAcquisitionPeriodMaximum
Namespace Prefix: | wwd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum value of the Company’s ratio of consolidated net debt to consolidated earnings before interest, taxes, depreciation, amortization, and stock-based compensation, plus any unusual non-cash charges to the extent deducted in computing net income minus any unusual non-cash gains to the extent added in computing net income (leverage ratio) required for financial covenant compliance. + References No definition available. + Details
Name: | wwd_DebtCovenantRatioOfConsolidatedNetDebtToDebtCovenantEbitdaMaximum
Namespace Prefix: | wwd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Company is permitted at any time, at its option, to prepay all, or from time to time prepay any part of, the then outstanding principal amount of any series of the Notes together with interest accrued on such amount to be prepaid to the date of payment, plus any applicable make-whole amount. + References No definition available. + Details
Name: | wwd_DebtInstrumentPrepaymentMakeWholeAmountComputation
Namespace Prefix: | wwd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Company is permitted at any time, at its option, to prepay all, or from time to time prepay any part of, the then outstanding principal amount of any series of the Notes together with interest accrued on such amount to be prepaid to the date of payment, plus any applicable make-whole amount. The make-whole amount is computed by discounting the remaining scheduled payments of interest and principal of the Notes being prepaid at a discount rate equal to the sum of this number of basis points and the yield to maturity of U.S. Treasury securities having a maturity equal to the remaining average life of the Notes being prepaid. + References No definition available. + Details
Name: | wwd_DebtInstrumentPrepaymentMakeWholeAmountComputationDiscountRateBasisPoints
Namespace Prefix: | wwd_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Company is permitted at any time, at its option, to prepay all, or from time to time prepay any part of, the then outstanding principal amount of any series of the Notes at this percentage of the principal amount of the series of the Notes to be prepaid, together with interest accrued on such amount to be prepaid to the date of payment, plus any applicable make-whole amount. + References No definition available. + Details
Name: | wwd_DebtInstrumentPrepaymentMaximumPercentageOfPrincipal
Namespace Prefix: | wwd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The Company is permitted at any time, at its option, to prepay all, or from time to time prepay any part of, the then outstanding principal amount of any series of the Notes but, in the case of partial prepayment, not less than this amount, together with interest accrued on such amount to be prepaid to the date of payment, plus any applicable make-whole amount. + References No definition available. + Details
Name: | wwd_DebtInstrumentPrepaymentPartialPaymentMinimum
Namespace Prefix: | wwd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_UsdNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NonFloatingRateNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotePurchaseAgreement2008Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesCNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotePurchaseAgreement2009Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesENotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotePurchaseAgreement2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_FloatingRateNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesJNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_FirstClosingNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SecondClosingNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotePurchaseAgreements2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotesSubjectToSwapAgreement2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_NotesNotSubjectToSwapAgreement2016Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesMNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesNNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=wwd_SeriesONotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_OtherForeignShortTermBorrowingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_ForeignPerformanceGuaranteeFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_ForeignLinesOfCreditAndOverdraftFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_ChineseCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_ChineseCreditFacilityRmbDenominatedLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_ChineseCreditFacilityUsdDenominatedLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=wwd_RevolvingCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |