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GOODWILL AND OTHER INTANGIBLE ASSETS (Details 3) (USD $)
In Millions, unless otherwise specified
9 Months Ended 3 Months Ended
Oct. 01, 2011
Sep. 29, 2012
Dec. 31, 2011
Jul. 02, 2011
SPX Heat Transfer Inc.
Sep. 29, 2012
Flow Technology reportable segment
Dec. 31, 2011
Flow Technology reportable segment
Sep. 29, 2012
Thermal Equipment and Services reportable segment
Dec. 31, 2011
Thermal Equipment and Services reportable segment
Sep. 29, 2012
Industrial Products and Services
Dec. 31, 2011
Industrial Products and Services
Intangible assets with determinable lives and indefinite lives                    
Impairment charges $ 24.7     $ 24.7            
Goodwill   1,810.7 1,773.7 17.2 1,083.9 1,019.9 435.3 462.9 291.5 290.9
Net carrying value of intangible assets with determinable lives   525.3 536.0   461.3   53.6   10.4  
Net carrying value of trademarks with indefinite lives       $ 7.5 $ 287.5   $ 130.2   $ 24.1