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Share-Based Compensation (Summary Of Expected Sharebased Compensation Expenses Assuming Established Performance Criteria Are Met And No Forfeitures Occur) (Details) $ in Millions	Dec. 31, 2015 USD ($)
2016 [Member]
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items]
Expected recognition of share-based compensation	$ 100.7
2017 [Member]
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items]
Expected recognition of share-based compensation	90.9
2018 [Member]
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items]
Expected recognition of share-based compensation	41.3
2019 [Member]
Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items]
Expected recognition of share-based compensation	$ 3.8

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- Definition

Unrecognized Share-Based Compensation, Expected Period Of Recognition [Line Items]

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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