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Dividends and Share Repurchases (Details) - $ / shares			3 Months Ended		6 Months Ended
	Apr. 29, 2019	Feb. 22, 2019	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Dividends Payable [Line Items]
Cash dividends per share (in dollars per share)		$ 0.2	$ 0.2	$ 0.17	$ 0.38	$ 0.32
Stock repurchased (in shares)			698,705
Average cost per share (in dollars per share)			$ 29.65
Remaining shares authorized to be repurchased (in shares)			9,593,701		9,593,701
Subsequent Event
Dividends Payable [Line Items]
Dividends declared (in dollars per share)	$ 0.2

X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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Aggregate dividends declared during the period for each share of common stock outstanding.

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The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

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