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Reportable Business Segments (Segment Data) (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Net sales |  |
Net sales | $ 793.4 | $ 715.2
Segment profit (loss) |  |
Total segment profit | 64.7 | 46.7
Reconciliation to Operating income: |  |
Special product quality adjustments | 0.0 | 0.4
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss) | 3.8 | 3.6
Restructuring charges (gains) | 0.1 | (0.2)
Operating income | 60.8 | 43.7
Residential Heating & Cooling [Member] |  |
Net sales |  |
Net sales | 419.8 | 377.3
Segment profit (loss) |  |
Total segment profit | 42.5 | 38.3
Commercial Heating & Cooling [Member] |  |
Net sales |  |
Net sales | 195.5 | 170.3
Segment profit (loss) |  |
Total segment profit | 19.1 | 14.2
Refrigeration [Member] |  |
Net sales |  |
Net sales | 178.1 | 167.6
Segment profit (loss) |  |
Total segment profit | 14.1 | 9.0
Corporate & Other [Member] |  |
Segment profit (loss) |  |
Total segment profit | $ 11.0 | $ 14.8

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