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Share-Based Compensation (Schedule Of Weighted Averages Of The Assumptions Used In Estimating The Fair Value Of Stock Option Awards) (Details) - $ / shares	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Share-Based Compensation [Abstract]
Expected stock price volatility	23.00%	28.00%
Expected term, in years	5 years 7 months 6 days	5 years 8 months 12 days
Risk-free interest rate	1.50%	1.50%
Weighted average estimated fair value of options granted	$ 19.72	$ 18.07

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ 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 (f)(2)(iv)



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Weighted average expected volatility rate of share-based compensation awards.

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-Name Accounting Standards Codification



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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



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-Name Accounting Standards Codification



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-Section 50



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-Publisher SEC



-Name Staff Accounting Bulletin (SAB)



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