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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

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Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

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Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions			6 Months Ended	9 Months Ended
	Aug. 03, 2017	Feb. 09, 2017	Apr. 30, 2017	Jul. 31, 2017	Jul. 31, 2016
Subsequent Event [Line Items]
Dividends on common stock		$ 1.5		$ 1.5	$ 1.5
Cash dividend, per share		$ 0.03
Dividends payable, date of record			Jan. 23, 2017	Jul. 21, 2017
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends on common stock	$ 1.5
Cash dividend, per share	$ 0.03