SUPPLEMENTARY GUARANTOR INFORMATION (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
$1,075 Million 5.75% 2025 Senior Notes [Member]
Debt Instrument, Par Value	$ 1,075.0	$ 1,075.0
Debt Instrument, Interest Rate, Stated Percentage	5.75%

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

Reference 1: 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

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Balance Type:	na
Period Type:	instant