Stock Incentive Plan (Schedule Of SSAR Exercise Price Range, Number Of Shares, Weighted Average Exercise Price And Remaining Contractual Lives) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Current Fiscal Year End Date	--12-31
Shares available for grant	3,600,000
$21.45 - $32.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit	21.45
Range of Exercise Prices, upper limit	32.01
$33.65 - $43.39
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit	33.65
Range of Exercise Prices, upper limit	43.39
$47.89 - $63.64
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit	47.89
Range of Exercise Prices, upper limit	63.64
Stock Appreciation Rights (SARs)
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	1,220,824	1,094,836
SSARs Exercisable, Exercisable as of December 31, 2012	596,077
SSARs Exercisable, Weighted Average Exercise Price	46.49
Stock Appreciation Rights (SARs) \| $21.45 - $32.01
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	56,625
SSAR Outstanding, Weighted Average Remaining Contractual Life (Years)	1 year 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price	22.64
SSARs Exercisable, Exercisable as of December 31, 2012	56,625
SSARs Exercisable, Weighted Average Exercise Price	22.64
Stock Appreciation Rights (SARs) \| $33.65 - $43.39
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	125,525
SSAR Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 1 month 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price	33.88
SSARs Exercisable, Exercisable as of December 31, 2012	124,800
SSARs Exercisable, Weighted Average Exercise Price	33.82
Stock Appreciation Rights (SARs) \| $47.89 - $63.64
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	1,038,674
SSAR Outstanding, Weighted Average Remaining Contractual Life (Years)	4 years 6 months 0 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Exercise Price	53.80
SSARs Exercisable, Exercisable as of December 31, 2012	414,652
SSARs Exercisable, Weighted Average Exercise Price	53.56

The number of share-based awards that were exercisable as of the reporting date, excluding options.

No definition available.

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- Definition

The weighted average exercise price of share-based awards that were exercisable as of the reporting date, excluding options.

+ References

No definition available.

+ Details

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- Definition

Weighted average exercise price for equity-based awards excluding options.

+ References

No definition available.

+ Details

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- Definition

End date of current fiscal year in the format --MM-DD.

+ References

No definition available.

+ Details

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- Definition

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ 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)

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(ii)

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

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

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

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- Definition

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

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- Definition

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

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