Stock Compensation Plans (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Stock Compensation Plans (Textuals) [Abstract]
Stock Options and SARs expiration period	10 years
Restricted Stock [Member] \| Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Restricted Stock [Member] \| Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Performance equity awards [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	5.3
Weighted average period over which remaining cost will be recognized	1 year 11 months
Performance equity awards [Member] \| Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	1 year 3 months 0 days
Performance equity awards [Member] \| Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years 3 months 0 days
Stock Options and Stock Appreciation Rights (SARs) [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	3.5
Weighted average period over which remaining cost will be recognized	1 year 7 months
Stock Options and Stock Appreciation Rights (SARs) [Member] \| Minimum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Stock Options and Stock Appreciation Rights (SARs) [Member] \| Maximum [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
2004 Omnibus Stock and Incentive Plan
Stock Compensation Plans (Textuals) [Abstract]
Maximum number of common stock shares authorized for issuance under Plan	34,500,000
Shares available for future awards	9,700,000
2004 Omnibus Stock and Incentive Plan \| Restricted Stock [Member]
Stock Compensation Plans (Textuals) [Abstract]
Total compensation cost to be recognized in future periods	27.7
Weighted average period over which remaining cost will be recognized	1 year 9 months
2004 Omnibus Stock and Incentive Plan \| Restricted stock or performance vesting awards [Member]
Stock Compensation Plans (Textuals) [Abstract]
Maximum number of common stock shares authorized for issuance under Plan	27,200,000
Shares available for future awards	9,700,000
Encore Plan [Member] \| Restricted Stock [Member]
Stock Compensation Plans (Textuals) [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

Unrecognized cost of unvested share-based compensation awards.

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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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, 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

-Paragraph 2

-Subparagraph (a)(1)

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

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- Definition

Period from grant date that an equity-based award expires, 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

-Paragraph 2

-Subparagraph (a)(2)

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

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)

-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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