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=98513485&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

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

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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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Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Millions	Oct. 25, 2017	Sep. 30, 2017	Apr. 25, 2017	Mar. 31, 2017	Feb. 24, 2016
Subsequent Event [Line Items]
Stock Repurchase Program, Authorized Amount			$ 250.0		$ 150.0
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 78.3		$ 114.6
Subsequent Event [Member]
Subsequent Event [Line Items]
Dividends Payable, Amount Per Share	$ 1.52
Dividends Payable, Date to be Paid	Jan. 05, 2018
Dividends Payable, Date Declared	Dec. 01, 2017