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Revenue (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019
Billed accounts receivable due within	60 days
Noncurrent unbilled receivables	$ 1,562		$ 1,573
Revenue from contract liabilities	3,970	$ 9,760
Remaining performance obligation amount	$ 1,562,813		$ 1,527,437
Woodward and General Electric Joint Venture [Member]
Ownership interest, joint venture	50.00%
Material Rights [Member]
Remaining performance obligation amount	$ 434,437
Net Sales [Member] | Manufactured Products [Member]
Percentage of attributable to revenue	87.00%	87.00%
Net Sales [Member] | MRO Products [Member]
Percentage of attributable to revenue	12.00%	11.00%

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