Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ in Millions	30 Months Ended
Jan. 31, 2014	Mar. 31, 2016
Stock Repurchase Program, Period in Force	3 years
Share Repurchase Plan [Member]
Stock Repurchase Program, Authorized Amount		$ 1,100.0
Stock Repurchase Program, Remaining Value Authorized to be Repurchased		$ 255.9

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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