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REVENUES FROM CONTRACTS - Disaggregated Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Apr. 01, 2017
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 351.9 | $ 340.6
Transferred at Point in Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 205.6 |
Transferred over Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 146.3 |
Cooling |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 59.6 |
Boilers, comfort heating, and ventilation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 68.1 |
Underground locators and inspection equipment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 25.8 |
Signal monitoring, obstruction lighting, and bus fare collection systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 39.8 |
Power transformers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 91.3 |
Process cooling equipment and services, and heat exchangers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 53.0 |
South African projects |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 14.3 |
HVAC segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 127.7 | 110.1
HVAC segment | Transferred at Point in Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 127.7 |
HVAC segment | Transferred over Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
HVAC segment | Cooling |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 59.6 |
HVAC segment | Boilers, comfort heating, and ventilation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 68.1 |
HVAC segment | Underground locators and inspection equipment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
HVAC segment | Signal monitoring, obstruction lighting, and bus fare collection systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
HVAC segment | Power transformers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
HVAC segment | Process cooling equipment and services, and heat exchangers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
HVAC segment | South African projects |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Detection and Measurement segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 65.6 | 53.6
Detection and Measurement segment | Transferred at Point in Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 64.0 |
Detection and Measurement segment | Transferred over Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 1.6 |
Detection and Measurement segment | Cooling |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Detection and Measurement segment | Boilers, comfort heating, and ventilation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Detection and Measurement segment | Underground locators and inspection equipment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 25.8 |
Detection and Measurement segment | Signal monitoring, obstruction lighting, and bus fare collection systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 39.8 |
Detection and Measurement segment | Power transformers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Detection and Measurement segment | Process cooling equipment and services, and heat exchangers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Detection and Measurement segment | South African projects |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Engineered Solutions segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 158.6 | $ 176.9
Engineered Solutions segment | Transferred at Point in Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 13.9 |
Engineered Solutions segment | Transferred over Time |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 144.7 |
Engineered Solutions segment | Cooling |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Engineered Solutions segment | Boilers, comfort heating, and ventilation |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Engineered Solutions segment | Underground locators and inspection equipment |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Engineered Solutions segment | Signal monitoring, obstruction lighting, and bus fare collection systems |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 0.0 |
Engineered Solutions segment | Power transformers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 91.3 |
Engineered Solutions segment | Process cooling equipment and services, and heat exchangers |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | 53.0 |
Engineered Solutions segment | South African projects |  |
Disaggregation of Revenue [Line Items] |  |
Revenues | $ 14.3 |

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