RELATED PARTY TRANSACTIONS (Details) (Directors and Officers that provide promotional materials, USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014 item	Dec. 31, 2013	Dec. 31, 2012
Directors and Officers that provide promotional materials
Related party transactions
Number of directors and officers who are principal owners of a company that provides promotional materials	2
Expenses incurred in connection with materials or services provided by a related party	$ 0.6	$ 1.0	$ 1.0

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration