Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Stock-Based Compensation
Stock-based compensation expense (in dollars)	$ 4.5	$ 4.5
2013 Omnibus Plan [Member]
Stock-Based Compensation
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	8,000,000
Stock Options
Stock-Based Compensation
Number of share options granted during the period (in shares)	300,000	400,000
Restricted Stock
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	100,000.0	100,000.0
Performance shares \| Performance Shares 2014 [Member]
Stock-Based Compensation
Period for meeting performance goals (in years)	3 years
Percentage of shares paid based on total shareholder return relative to peer group of companies	50.00%
Percentage of shares paid based on improvement in EVA	50.00%
Performance shares \| Performance Shares 2014 [Member] \| Minimum
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	0.0
Performance shares \| Performance Shares 2014 [Member] \| Maximum
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	500,000.0
Performance shares \| Performance Shares 2013 [Member]
Stock-Based Compensation
Period for meeting performance goals (in years)	3 years
Percentage of shares paid based on total shareholder return relative to peer group of companies	50.00%
Percentage of shares based on debt reduction for performance goals	50.00%
Performance shares \| Performance Shares 2013 [Member] \| Minimum
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	0
Performance shares \| Performance Shares 2013 [Member] \| Maximum
Stock-Based Compensation
Number of shares of other than options granted during the period (in shares)	800,000.0
Officers and Employees [Member] \| Restricted Stock
Stock-Based Compensation
Expiration period of restrictions (in years)	third anniversary
Director [Member] \| Restricted Stock
Stock-Based Compensation
Expiration period of restrictions (in years)	second anniversary	third anniversary

The date when the restrictions on the equity-based award expires as specified in the award agreement.

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percentage Shares Granted Based on Improvement in EVA

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percentage Shares Granted Based on Total Shareholder Return Relative to Peer Group of Companies

+ References

No definition available.

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- Definition

Represents the percentage of shares based on debt reduction for performance goals.

+ References

No definition available.

+ Details

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- Definition

Represents the period for meeting performance goals.

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

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

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

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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

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

Net number of share options (or share units) granted during the period.

+ 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)(iv)(1)

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

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