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Subsequent Events (Details) - $ / shares			3 Months Ended
	May 03, 2019	Jan. 31, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017
Subsequent Event
Cash dividends declared (in dollars per share)			$ 0.75	$ 0.75	$ 0.75	$ 0.59	$ 0.59	$ 0.59
Regular cash dividend
Subsequent Event
Cash dividends declared (in dollars per share)		$ 0.75
Subsequent Event | Regular cash dividend
Subsequent Event
Cash dividends declared (in dollars per share)	$ 0.75

X

- Definition

Aggregate dividends declared 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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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

X

- Details

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Namespace Prefix:
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X

- Details

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