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Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended								12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Consolidated Statements of Stockholders' Equity
Cash dividends per share	$ 0.1625	$ 0.1625	$ 0.1625	$ 0.1425	$ 0.1425	$ 0.1425	$ 0.1425	$ 0.1250	$ 0.6300	$ 0.5525	$ 0.4850

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

+ Details

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration