Stockholders' Equity (Tables)

6 Months Ended

Mar. 31, 2020

Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Assumptions Used in Estimate of Fair Value of Stock Option Awards

	Three-Months Ended						Six-Months Ended
	March 31,						March 31,
	2020		2019				2020				2019
Weighted-average exercise price per share	$	127.84	$	77.12			$	104.91			$	79.12
Weighted-average grant date market value of Woodward stock	$	127.84	$	77.12			$	104.91			$	79.12
Expected term (years)		6.5		6.5				6.4	-	8.7		6.5	-	8.7
Estimated volatility		25.7%		25.8%	-	26.0%		25.7%	-	30.1%		25.7%	-	31.0%
Estimated dividend yield		0.9%		0.7%	-	0.8%		0.6%	-	0.9%		0.7%	-	0.8%
Risk-free interest rate		1.7%		2.6%				1.6%	-	1.7%		2.6%	-	3.1%

Summary of Activity for Stock Option Awards

	Three-Months Ended				Six-Months Ended
	March 31, 2020				March 31, 2020
	Number of options		Weighted-Average Exercise Price per Share		Number of options		Weighted-Average Exercise Price per Share
Options, beginning balance		5,766	$	$59.97		5,387	$	53.73
Options granted		3		$127.84		629		104.91
Options exercised		(137)		$37.72		(363)		35.05
Options forfeited		(9)		$86.77		(30)		83.20
Options, ending balance		5,623		$60.50		5,623		60.50

Changes in Non-vested Stock Options

	Three-Months Ended				Six-Months Ended
	March 31, 2020				March 31, 2020
	Number of options		Weighted-Average Grant Date Fair Value per Share		Number of options		Weighted-Average Grant Date Fair Value Per Share
Non-vested options outstanding, beginning balance		1,905	$	$25.90		2,068	$	23.43
Options granted		3		$33.44		629		28.57
Options vested		(32)		$23.79		(800)		21.52
Options forfeited		(9)		$25.68		(30)		25.34
Non-vested options outstanding, ending balance		1,867		$25.95		1,867		25.95

Stock Options Vested, or Expected to Vest and Exercisable

	Number		Weighted- Average Exercise Price		Weighted- Average Remaining Life in Years		Aggregate Intrinsic Value
Options outstanding		5,623	$	60.50		6.0	$	56,006
Options vested and exercisable		3,755		47.67		4.8		56,006
Options vested and expected to vest		5,515		59.92		5.9		56,006

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of Activity for Restricted Stock Units

	Three-Months Ended				Six-Months Ended
	March 31, 2020				March 31, 2020
		Number		Weighted-Average Grant Date Fair Value per Unit		Number		Fair Value per Share
Beginning balance		9	$	91.55		9	$	91.55
Units granted		-		-		-		-
Units vested		-		-		-		-
Units forfeited		-		-		-		-
Ending balance		9		91.55		9		91.55