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GOODWILL, OTHER INTANGIBLE ASSETS AND RESTRUCTURING (Details 2) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Merged Business | Customer relationships
   
Preliminary allocation of the net purchase price to goodwill and other intangible assets    
Definite-lived intangible assets $ 1,100.0 $ 1,100.0
Merged Business | Supply contracts
   
Preliminary allocation of the net purchase price to goodwill and other intangible assets    
Definite-lived intangible assets 42.6 42.6
Merged Business | Technology
   
Preliminary allocation of the net purchase price to goodwill and other intangible assets    
Definite-lived intangible assets 14.9 14.9
Merged Business | Trade names
   
Preliminary allocation of the net purchase price to goodwill and other intangible assets    
Definite-lived intangible assets 6.0 6.0
Building Products | Trade names
   
Preliminary allocation of the net purchase price to goodwill and other intangible assets    
Indefinite-lived intangible assets, carrying value $ 6.0 $ 6.0