Subsequent Events - Dividend Announced (Details) - $ / shares shares in Millions	Oct. 29, 2015	Sep. 30, 2015
Subsequent Event [Line Items]
Additional number of shares authorized to be repurchased		1.8
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased		1.8
Subsequent Event
Subsequent Event [Line Items]
Additional number of shares authorized to be repurchased	10.0
Quarterly dividend per share	$ 0.20
Declaration date	Oct. 29, 2015
Record date	Nov. 25, 2015
Payment date	Dec. 15, 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

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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.

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- Definition

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

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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- 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.

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