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Revenue (Schedule of Impact of the Adoption ASC 606 on Consolidated Cash Flows) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | [1],[2],[3],[4],[5] | Mar. 31, 2019 | [1],[2],[3],[4],[5] | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | [1],[2],[3],[6],[7] | Mar. 31, 2018 | [1],[2],[3],[6],[7] | Dec. 31, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings | $ 66,796 | [1],[2],[3],[4],[5] | $ 66,107 | $ 77,579 | $ 49,120 | [1],[2],[3],[4],[5] | $ 74,512 | [1],[2],[3],[6],[7] | $ 49,117 | $ 38,489 | $ 18,260 | [1],[2],[3],[6],[7] | $ 259,602 | $ 180,378 | $ 200,507
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 142,004 | 116,131 | 80,917
Net loss on sales of assets |  |  |  |  |  |  |  |  |  |  |  |  | 1,925 | (1,106) | (3,604)
Stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  | 18,146 | 18,229 | 17,282
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (10,065) | (30,177) | 22,772
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade accounts receivable |  |  |  |  |  |  |  |  |  |  |  |  | 841 | (6,494) | (53,151)
Unbilled receivables (contract assets) |  |  |  |  |  |  |  |  |  |  |  |  | (31,353) |  |
Costs to fulfill a contract |  |  |  |  |  |  |  |  |  |  |  |  | (20,656) |  |
Inventories |  |  |  |  |  |  |  |  |  |  |  |  | (49,185) | (7,660) | (10,857)
Accounts payable and accrued liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 48,004 | (2,284) | 64,659
Contract liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 29,082 | (1,596) | (1,292)
Income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 2,083 | 35,641 | 3,323
Retirement benefit obligations |  |  |  |  |  |  |  |  |  |  |  |  | (3,705) | (4,653) | (2,932)
Other |  |  |  |  |  |  |  |  |  |  |  |  | 3,885 | 3,213 | (10,087)
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 390,608 | 299,292 | 307,537
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for purchase of property, plant, and equipment |  |  |  |  |  |  |  |  |  |  |  |  | (99,066) | (127,140) | (92,336)
Proceeds from sale of assets |  |  |  |  |  |  |  |  |  |  |  |  | 1,010 | 1,923 | 3,743
Proceeds from sales of short-term investments |  |  |  |  |  |  |  |  |  |  |  |  | 22,252 | 9,088 | 5,313
Payments for purchases of short-term investments |  |  |  |  |  |  |  |  |  |  |  |  | (26,723) | (9,323) | (8,586)
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  | (102,527) | (896,567) | (91,866)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (39,066) | (34,003) | (29,745)
Proceeds from sales of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | 36,044 | 9,132 | 14,195
Payments for repurchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  | (110,311) |  | (71,751)
Borrowings on revolving lines of credit and short-term borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 1,683,542 | 1,930,261 | 1,506,000
Payments on revolving lines of credit and short-term borrowings |  |  |  |  |  |  |  |  |  |  |  |  | (1,690,035) | (1,691,934) | (1,630,100)
Payments of long-term debt and capital lease obligations |  |  |  |  |  |  |  |  |  |  |  |  | (143,535) | (421) | (412)
Payments of debt financing costs |  |  |  |  |  |  |  |  |  |  |  |  | (2,238) | (1,494) |
Net cash used in financing activities |  |  |  |  |  |  |  |  |  |  |  |  | (265,599) | 605,998 | (211,813)
Effect of exchange rate changes on cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | (7,003) | (12,681) | 2,604
Net change in cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | 15,479 | (3,958) | 6,462
Cash and cash equivalents, including restricted cash, at beginning of year |  |  |  |  | 83,594 |  |  |  |  |  | $ 87,552 |  | 83,594 | 87,552 | 81,090
Cash and cash equivalents, including restricted cash, at end of year | 99,073 |  |  |  |  |  | 83,594 |  |  |  |  |  | 99,073 | 83,594 | $ 87,552
Adjustments [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  | 5,635 |  |
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | (2,428) |  |
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (7,626) |  |
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade accounts receivable |  |  |  |  |  |  |  |  |  |  |  |  | (5,851) |  |
Unbilled receivables (contract assets) |  |  |  |  |  |  |  |  |  |  |  |  | (31,353) |  |
Costs to fulfill a contract |  |  |  |  |  |  |  |  |  |  |  |  | (20,656) |  |
Inventories |  |  |  |  |  |  |  |  |  |  |  |  | 24,065 |  |
Accounts payable and accrued liabilities |  |  |  |  |  |  |  |  |  |  |  |  | (2,034) |  |
Contract liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 33,106 |  |
Income taxes |  |  |  |  |  |  |  |  |  |  |  |  | 8,238 |  |
Other |  |  |  |  |  |  |  |  |  |  |  |  | (1,096) |  |
Under Previous Standard [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net earnings |  |  |  |  |  |  |  |  |  |  |  |  | 253,967 |  |
Adjustments to reconcile net earnings to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  | 144,432 |  |
Net loss on sales of assets |  |  |  |  |  |  |  |  |  |  |  |  | 1,925 |  |
Stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  | 18,146 |  |
Deferred income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (2,439) |  |
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade accounts receivable |  |  |  |  |  |  |  |  |  |  |  |  | 6,692 |  |
Inventories |  |  |  |  |  |  |  |  |  |  |  |  | (73,250) |  |
Accounts payable and accrued liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 50,038 |  |
Contract liabilities |  |  |  |  |  |  |  |  |  |  |  |  | (4,024) |  |
Income taxes |  |  |  |  |  |  |  |  |  |  |  |  | (6,155) |  |
Retirement benefit obligations |  |  |  |  |  |  |  |  |  |  |  |  | (3,705) |  |
Other |  |  |  |  |  |  |  |  |  |  |  |  | 4,981 |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 390,608 |  |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for purchase of property, plant, and equipment |  |  |  |  |  |  |  |  |  |  |  |  | (99,066) |  |
Proceeds from sale of assets |  |  |  |  |  |  |  |  |  |  |  |  | 1,010 |  |
Proceeds from sales of short-term investments |  |  |  |  |  |  |  |  |  |  |  |  | 22,252 |  |
Payments for purchases of short-term investments |  |  |  |  |  |  |  |  |  |  |  |  | (26,723) |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  | (102,527) |  |
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (39,066) |  |
Proceeds from sales of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | 36,044 |  |
Payments for repurchases of common stock |  |  |  |  |  |  |  |  |  |  |  |  | (110,311) |  |
Borrowings on revolving lines of credit and short-term borrowings |  |  |  |  |  |  |  |  |  |  |  |  | 1,683,542 |  |
Payments on revolving lines of credit and short-term borrowings |  |  |  |  |  |  |  |  |  |  |  |  | (1,690,035) |  |
Payments of long-term debt and capital lease obligations |  |  |  |  |  |  |  |  |  |  |  |  | (143,535) |  |
Payments of debt financing costs |  |  |  |  |  |  |  |  |  |  |  |  | (2,238) |  |
Net cash used in financing activities |  |  |  |  |  |  |  |  |  |  |  |  | (265,599) |  |
Effect of exchange rate changes on cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | (7,003) |  |
Net change in cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | 15,479 |  |
Cash and cash equivalents, including restricted cash, at beginning of year |  |  |  |  | $ 83,594 |  |  |  |  |  |  |  | 83,594 |  |
Cash and cash equivalents, including restricted cash, at end of year | $ 99,073 |  |  |  |  |  | $ 83,594 |  |  |  |  |  | $ 99,073 | $ 83,594 |
[1] | In the first and third quarters of fiscal year 2018, Woodward recognized a tax expense of $14,778 and $3,671, respectively, and tax benefit of $7,589 in the fourth quarter of fiscal year 2018, related to the transition impacts of the change in U.S. tax legislation in December 2017. In the third quarter of fiscal year 2019, Woodward recognized additional income tax expense of $10,588 related to the repatriation tax on deferred foreign income related to the December 2017 U.S. Tax legislation.
[2] | Results for the first through fourth quarters of fiscal year 2019 include, Duarte move related costs of $6,963, $9,161, $7,035, and $3,930, respectively. Results for the second, third and fourth quarters of fiscal year 2018, include, as applicable, pre-tax Duarte move related costs and L’Orange acquisition transaction and integration costs of $1,525, $5,134 and $4,714, respectively.
[3] | Results for the first through third quarters of fiscal year 2019 include pre-tax non-cash charges of $9,511, $8,985, $2,604, respectively, as compared to the third and fourth quarters of fiscal year 2018, which include pre-tax non-cash charges of $8,299 and $26,086, respectively. These costs are associated with the purchase accounting impacts related to the revaluation of the L’Orange inventory recognized in cost of goods sold and the amortization of the backlog intangible.
[4] | Results for the fourth quarter of fiscal year 2019 include pre-tax, non-cash charges of $12,601 related to the impairment of receivables, inventory and certain other assets in connection with Senvion, a significant customer of Woodward renewables business, which declared insolvency in fiscal year 2019.
[5] | Woodward adopted ASC 606 on October 1, 2018 and elected the modified retrospective transition method. The quarterly results for periods prior to fiscal year 2019 were not adjusted for the new standard. Subsequent to the adoption of ASC 606, Woodward’s management identified an inconsistency in the application of ASC 606. The inconsistency resulted in errors that were cumulatively not material in determining the percentage of completion calculation on over time product revenue recognition, which caused the Condensed Consolidated Financial Statements for the quarters ended December 31, 2018 and March 31, 2019, as well as the cumulative impact of the adoption of ASC 606 on the Condensed Consolidated Balance Sheet as of October 1, 2018, to be misstated by amounts that management concluded were not material (“ASC 606 adoption errors”). To correct the errors for the three-months ended December 31, 2018 and for the three and six-months ended March 31, 2019, Woodward made an out-of-period correction in the three-months ended June 30, 2019. The correction resulted in increases to net sales of $13,614, earnings before income taxes of $8,041, net earnings of $6,037, and diluted earnings per share of $0.09 for the three-months ended June 30, 2019, the majority of which relates to Woodward’s Aerospace segment.
[6] | Results for the third quarter of fiscal year 2018 include the (i) pre-tax cost associated with an at-the-money forward option of $5,543, (ii) pre-tax warranty and indemnity insurance costs associated with the acquisition of L’Orange of $4,293, and (iii) pre-tax German real estate transfer tax costs associated with the acquisition of L’Orange of $3,385.
[7] | The second quarter of fiscal year 2018 includes pre-tax restructuring charges totaling $17,013, the majority of which relate to the Company’s decision to relocate its Duarte, California operations to the Company’s newly renovated Drake Campus in Fort Collins, Colorado. The remaining restructuring charges recognized during the quarter consist of workforce management costs related to aligning the Company’s industrial turbomachinery business with current market conditions.

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- Definition Amount of increase (decrease) in obligation for pension and other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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