Subsequent Event (Details) (Dividend Declared [Member], USD $)	1 Months Ended
Jun. 09, 2015	May 18, 2015
Dividend Declared [Member]
Subsequent Event [Line Items]
Common stock cash dividends per share, declared		$ 0.40
Common stock cash dividends per share, declared date	May 18, 2015
Common stock cash dividends per share, paid date	Jun. 09, 2015
Common stock cash dividends per share, date of record	May 29, 2015

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

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- Definition

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

+ References

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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.

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