Stock-Based Compensation (Schedule Of Fair Value Of The Restricted Stock Awards Granted During The Periods) (Details) - Restricted Stock [Member] - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	25,848	13,768	750,290	452,110
Estimated fair value (in millions)	$ 0.9	$ 0.9	$ 24.5	$ 23.3
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	0	0	724,442	438,342
Estimated fair value (in millions)	$ 0.0	$ 0.0	$ 23.6	$ 22.4
Percentage of shares granted expected to be distributed			96.00%	95.00%
Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted	25,848	13,768	25,848	13,768
Estimated fair value (in millions)	$ 0.9	$ 0.9	$ 0.9	$ 0.9
Percentage of shares granted expected to be distributed	100.00%	100.00%	100.00%	100.00%

Share based compensation arrangement by share based payment award estimated fair value.

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- Definition

Share based compensation arrangement by share based payment award percentage of shares expected to be distributed.

+ References

No definition available.

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ 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)(2)(iii)(1)

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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