INFORMATION ON REPORTABLE SEGMENTS, CORPORATE EXPENSE AND OTHER - Financial Data for Reportable Segments (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 01, 2016
Sep. 26, 2015
Oct. 01, 2016
Sep. 26, 2015
Dec. 31, 2015
Revenues:          
Revenues $ 466.8 $ 589.5 $ 1,500.6 $ 1,775.8  
Income:          
Income 21.8 6.6 (394.2) 105.0  
Impairment of goodwill and intangible assets 0.0 15.0 426.4 15.0  
Special charges, net 12.5 34.6 64.3 41.7  
Revenues recognized under percentage of completion method 72.2 117.0 258.5 354.8  
Costs and estimated earnings in excess of billings on contracts 97.8   97.8   $ 87.4
Billings in excess of costs and estimated earnings on uncompleted contracts 55.7   55.7   $ 52.9
Power and Energy          
Income:          
Impairment of goodwill and intangible assets     426.4    
Reporting segments          
Revenues:          
Revenues 466.8 589.5 1,500.6 1,775.8  
Income:          
Income 48.1 79.3 143.9 223.0  
Reporting segments | Food and Beverage          
Revenues:          
Revenues 173.0 205.9 545.8 650.8  
Income:          
Income 19.6 27.1 56.9 78.1  
Special charges, net 3.0 21.8 17.5 24.5  
Reporting segments | Power and Energy          
Revenues:          
Revenues 127.3 198.5 432.8 556.0  
Income:          
Income 5.5 26.5 17.7 65.5  
Special charges, net (0.3) 8.5 12.0 10.8  
Reporting segments | Industrial          
Revenues:          
Revenues 166.5 185.1 522.0 569.0  
Income:          
Income 23.0 25.7 69.3 79.4  
Special charges, net 2.1 3.8 9.1 5.9  
Other          
Income:          
Corporate expense 13.8 14.1 45.3 50.3  
Special charges, net 7.7 0.5 25.7 0.5  
Segment reconciling items          
Income:          
Pension and postretirement expense 0.0 9.0 2.1 11.0  
Impairment of goodwill and intangible assets 0.0 15.0 426.4 15.0  
Special charges, net $ 12.5 $ 34.6 $ 64.3 $ 41.7