Stock-Based Compensation (Summary Of Stock Options Outstanding Information) (Details) (USD $)	12 Months Ended
Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in usd per share)	$ 51
Exercise Price, maximum (in usd per share)	$ 108.20
Number of Outstanding Options	7,281,396
Weighted-Avg. Exercise Price (in usd per share)	$ 83.25
Number of Exercisable Options	6,232,998
Range Of Exercise Prices1 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted-Avg. Remaining Contractual Life-Yrs	8 years 7 months 7 days
Weighted-Avg. Exercise Price (in usd per share)	$ 64.60
Range Of Exercise Prices 2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in usd per share)	$ 51
Exercise Price, maximum (in usd per share)	$ 64.99
Number of Outstanding Options	1,138,602
Weighted-Avg. Remaining Contractual Life-Yrs	4 years 4 months 26 days
Weighted-Avg. Exercise Price (in usd per share)	$ 63.84
Number of Exercisable Options	192,152
Weighted-Avg. Exercise Price (in usd per share)	$ 74.41
Range Of Exercise Prices 3 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in usd per share)	$ 65
Exercise Price, maximum (in usd per share)	$ 78.99
Number of Outstanding Options	3,095,377
Weighted-Avg. Remaining Contractual Life-Yrs	2 years 1 month 6 days
Weighted-Avg. Exercise Price (in usd per share)	$ 74.31
Number of Exercisable Options	2,993,429
Weighted-Avg. Exercise Price (in usd per share)	$ 91.82
Range Of Exercise Prices 4 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in usd per share)	$ 79
Exercise Price, maximum (in usd per share)	$ 91.99
Number of Outstanding Options	1,604,717
Weighted-Avg. Remaining Contractual Life-Yrs	3 years 1 month 6 days
Weighted-Avg. Exercise Price (in usd per share)	$ 91.82
Number of Exercisable Options	1,604,717
Weighted-Avg. Exercise Price (in usd per share)	$ 108.20
Range Of Exercise Prices 5 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price, minimum (in usd per share)	$ 92
Exercise Price, maximum (in usd per share)	$ 108.20
Number of Outstanding Options	1,442,700
Weighted-Avg. Remaining Contractual Life-Yrs	4 years 3 months 20 days
Weighted-Avg. Exercise Price (in usd per share)	$ 108.20
Number of Exercisable Options	1,442,700
Weighted-Avg. Exercise Price (in usd per share)	$ 86.41

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ 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 (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ 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 (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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- Definition

Weighted average remaining contractual term of outstanding stock options, 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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ 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 (g)

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