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Revenue (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Oct. 01, 2018 | Sep. 30, 2018 | Dec. 31, 2016
Retained earnings |  | $ 2,168,204 |  |  | $ 2,168,204 |  |  |  | $ 1,966,643 |  |
Net sales |  | 752,005 | $ 588,117 |  | 2,163,660 | $ 1,606,514 |  |  |  |  |
Earnings before income taxes |  | 92,314 | 54,417 |  | 243,997 | 140,551 |  |  |  |  |
Net earnings |  | $ 66,107 | $ 49,117 |  | $ 192,806 | $ 105,866 |  |  |  |  |
Diluted earnings per share |  | $ 1.02 | $ 0.77 |  | $ 2.99 | $ 1.66 |  |  |  |  |
Revenue related to noncash consideration |  | $ 23,176 |  |  | $ 67,938 |  |  |  |  |  |
Increase in revenue related to changes in estimated total lifetime sales |  | 4,482 |  |  | 6,017 |  |  |  |  |  |
Increase in cost of goods sold related to changes in estimated total lifetime sales |  | 9,255 |  |  | 9,578 |  |  |  |  |  |
Capitalized costs to fulfill contracts |  | 97,789 |  |  | 97,789 |  |  |  |  |  |
Amortized capitalized costs to fulfill contracts |  | 207 |  |  | 207 |  |  |  |  |  |
Amortized deferred liability to revenue |  | 278 |  |  | 278 |  |  |  |  |  |
Accounts receivable |  | 650,777 |  |  | 650,777 |  |  |  | 432,003 | [1],[2] |
Noncurrent unbilled receivables |  | $ 894 |  |  | $ 894 |  |  |  | 0 |  |
Percent of total billed and unbilled accounts receivable from U.S. Government |  | 10.00% |  |  | 10.00% |  |  |  |  |  |
Current contract liabilities |  | $ 26,307 |  |  | $ 26,307 |  |  |  | 9,659 |  |
Revenue from contract liabilities |  | 6,147 |  |  | 26,459 |  |  |  |  |  |
Noncurrent contract liabilities | [3] | 332,927 |  |  | 332,927 |  |  |  | 235,300 |  |
Remaining performance obligation amount |  | $ 1,659,788 |  |  | $ 1,659,788 |  |  |  |  |  |
Woodward and General Electric Joint Venture [Member] |  |  |  |  |  |  |  |  |  |  |
Ownership interest, joint venture |  | 50.00% |  |  | 50.00% |  |  |  |  |  | 50.00%
Total consideration |  |  |  |  |  |  |  |  |  |  | $ 323,410
Material Rights [Member] |  |  |  |  |  |  |  |  |  |  |
Remaining performance obligation amount |  | $ 436,876 |  |  | $ 436,876 |  |  |  |  |  |
Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |
Net earnings |  | 66,107 | $ 49,117 |  | 192,806 | $ 105,866 |  |  |  |  |
ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Cumulative effect from adoption |  | 38,700 |  |  | 38,700 |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  | $ 2,005,388 |  |  |  |
Capitalized costs to fulfill contracts |  |  |  |  |  |  | 57,529 |  |  |  |
Accounts receivable | [1],[2] |  |  |  |  |  | 567,671 |  |  |  |
Contract liabilities |  |  |  |  |  |  | 57,529 |  |  |  |
ASC 606 [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |
Cumulative effect from adoption |  | 38,745 |  |  | 38,745 |  |  |  |  |  |
Aerospace [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 498,775 |  |  | 1,374,616 |  |  |  |  |  |
Revenue related to noncash consideration |  | 22,947 |  |  | 66,961 |  |  |  |  |  |
Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 253,230 |  |  | 789,044 |  |  |  |  |  |
Revenue related to noncash consideration |  | $ 229 |  |  | $ 977 |  |  |  |  |  |
Net Sales [Member] | Manufactured Products [Member] |  |  |  |  |  |  |  |  |  |  |
Percentage of attributable to revenue |  | 84.00% |  |  | 86.00% |  |  |  |  |  |
Net Sales [Member] | MRO Products [Member] |  |  |  |  |  |  |  |  |  |  |
Percentage of attributable to revenue |  |  |  | 13.00% | 12.00% |  |  |  |  |  |
Liability Related To Customer Supplied Inventory [Member] |  |  |  |  |  |  |  |  |  |  |
Current contract liabilities |  | $ 13,021 |  |  | $ 13,021 |  |  |  |  |  |
Liability Related To Customer Supplied Inventory [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Current contract liabilities |  |  |  |  |  |  | 11,951 |  |  |  |
Deferred Revenue From Material Rights Related To Engineering And Development Funding [Member] |  |  |  |  |  |  |  |  |  |  |
Current contract liabilities |  | 3,137 |  |  | 3,137 |  |  |  |  |  |
Noncurrent contract liabilities |  | 98,889 |  |  | 98,889 |  |  |  |  |  |
Deferred Revenue From Material Rights Related To Engineering And Development Funding [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Current contract liabilities |  |  |  |  |  |  | 664 |  |  |  |
Noncurrent contract liabilities |  |  |  |  |  |  | 79,347 |  |  |  |
As Previously Reported [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  |  |  |  |  |  | 1,995,570 |  | 28,927 |  |
Accounts receivable | [1],[2] |  |  |  |  |  | 536,910 |  | $ 104,907 |  |
As Previously Reported [Member] | ASC 606 [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |
Cumulative effect from adoption |  |  |  |  |  |  | 28,927 |  |  |  |
Adjustments [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  | 50,716 |  |  | 50,716 |  | 9,818 |  |  |  |
Net sales |  | 36,965 |  |  | 106,366 |  |  |  |  |  |
Earnings before income taxes |  | 463 |  |  | 15,204 |  |  |  |  |  |
Net earnings |  | $ 663 |  |  | $ 11,971 |  |  |  |  |  |
Diluted earnings per share |  | $ 0.01 |  |  | $ 0.19 |  |  |  |  |  |
Accounts receivable |  | $ 194,495 |  |  | $ 194,495 |  | 30,761 | [1],[2] |  |  |
Adjustments [Member] | Aerospace [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  |  | 135,668 |  |  |  |
Increase [Member] | ASC 606 [Member] | Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |
Cumulative effect from adoption |  |  |  |  |  |  | 38,745 |  |  |  |
Retained earnings |  |  |  |  |  |  | $ 9,818 |  |  |  |
Out-Of-Period Correction [Member] | ASC 606 [Member] |  |  |  |  |  |  |  |  |  |  |
Net sales |  | 13,614 |  |  |  |  |  |  |  |  |
Earnings before income taxes |  | 8,041 |  |  |  |  |  |  |  |  |
Net earnings |  | $ 6,037 |  |  |  |  |  |  |  |  |
Diluted earnings per share |  | $ 0.09 |  |  |  |  |  |  |  |  |
[1] | The adoption of ASC 606 changed the revenue recognition practices for a number of revenue generating activities across Woodward’s businesses, although the most significant impacts are concentrated in product being produced for customers that have no alternative use to Woodward and Woodward has an enforceable right to payment with a profit, and MRO. The revenue related to these activities, which previously was accounted for on a point in time basis, is now required to use an over time model because the associated contracts meet one or more of the mandatory criteria established in ASC 606, as described above, and are included as current unbilled receivables in “Accounts receivable” and noncurrent unbilled receivables in “Other assets.” The change in the timing of revenue recognized in connection with over time contracts similarly changed the timing of manufacturing cost recognition and certain engineering and development costs, which are reflected as a reduction to inventory.
[2] | The value of noncash consideration in the form of exchanged products and other customer provided inventory is reflected in “Inventories,” and in contract liabilities, which are included in “Accrued liabilities.”
[3] | See Note 3, Revenue, for more information on net noncurrent contract liabilities.

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