v2.4.0.8

FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $) In Millions, unless otherwise specified				3 Months Ended
	Mar. 31, 2014 4.625 Notes	Dec. 31, 2013 4.625 Notes	Mar. 31, 2014 4.875 Notes	Mar. 31, 2014 Level 2 Term Loan	Mar. 31, 2014 Carrying Amount Level 1 4.625 Notes	Dec. 31, 2013 Carrying Amount Level 1 4.625 Notes	Mar. 31, 2014 Carrying Amount Level 1 4.875 Notes	Dec. 31, 2013 Carrying Amount Level 1 4.875 Notes	Mar. 31, 2014 Carrying Amount Level 2 Term Loan	Dec. 31, 2013 Carrying Amount Level 2 Term Loan	Mar. 31, 2014 Fair Value Level 1 4.625 Notes	Dec. 31, 2013 Fair Value Level 1 4.625 Notes	Mar. 31, 2014 Fair Value Level 1 4.875 Notes	Dec. 31, 2013 Fair Value Level 1 4.875 Notes	Mar. 31, 2014 Fair Value Level 2 Term Loan	Dec. 31, 2013 Fair Value Level 2 Term Loan
Carrying amount and estimated fair values of debt
Interest rate (as a percent)	4.625%	4.625%	4.875%
Long-term debt					$ 688.0	$ 688.0	$ 450.0	$ 450.0	$ 194.1	$ 194.8	$ 680.3	$ 676.4	$ 441.3	$ 426.9	$ 197.7	$ 199.0
Debt issuance costs				$ 2.4

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	na
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X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The cash outflow for loan and debt issuance costs.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

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