Subsequent Event (Details) (Subsequent Event [Member], USD $)	3 Months Ended
Oct. 31, 2014	Aug. 21, 2014
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared	Aug. 21, 2014
Dividends Payable, Amount Per Share		$ 0.38
Dividends Payable, Date to be Paid	Oct. 10, 2014
Dividends Payable, Date of Record	Sep. 22, 2014

Date the declared dividend will be paid, in CCYY-MM-DD format.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

+ Details

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Details

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