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Stockholders' Equity (Tables)

6 Months Ended

Mar. 31, 2019

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,
	2019						2018						2019						2018
Weighted-average exercise price per share	$	77.12					$	72.01					$	79.12					$	78.91
Weighted-average grant date market value of Woodward stock	$	77.12					$	72.01					$	79.12					$	78.91
Expected term (years)		6.5						6.4						6.5	-	8.7				6.4	-	8.7
Estimated volatility		25.8%	-	26.0%				29.1%						25.7%	-	31.0%				29.1%	-	32.7%
Estimated dividend yield		0.7%	-	0.8%				0.8%						0.7%	-	0.8%				0.6%	-	0.8%
Risk-free interest rate		2.6%						2.7%	-	2.8%				2.6%	-	3.1%				2.1%	-	2.8%



Summary of Activity for Stock Option Awards



		Three-Months Ended						Six-Months Ended
		March 31, 2019						March 31, 2019
		Number of options			Weighted-Average Exercise Price per Share			Number of options			Weighted-Average Exercise Price per Share
Options, beginning balance			6,173		$	49.40			5,611		$	45.42
Options granted			226			77.12			900			79.12
Options exercised			(638)			32.57			(745)			32.41
Options expired			(1)			78.97			(1)			78.97
Options forfeited			(27)			68.35			(32)			68.73
Options, ending balance			5,733			52.27			5,733			52.27



Changes in Non-vested Stock Options



		Three-Months Ended						Six-Months Ended
		March 31, 2019						March 31, 2019
		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			1,862		$	$23.50			1,988		$	21.64
Options granted			226			$22.22			900			23.99
Options vested			(3)			$25.56			(798)			19.80
Options forfeited			(27)			$22.82			(32)			23.00
Non-vested options outstanding, ending balance			2,058			$23.36			2,058			23.36



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			5,733		$	52.27			6.1		$	262,179
Options vested and exercisable			3,675			41.53			4.8			207,524
Options vested and expected to vest			5,608			51.74			6.1			259,403



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, 2019						March 31, 2019
			Number			Fair Value per Share			Number			Fair Value per Share
Beginning balance			10		$	82.71			10		$	82.71
Shares granted			-			n/a			-			n/a
Shares vested			-			n/a			-			n/a
Shares forfeited			-			n/a			-			n/a
Ending balance			10			82.71			10			82.71



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