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Reportable Business Segments (Segment Data) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Net sales |  |  |  |
Net sales | $ 1,052.3 | $ 1,010.0 | $ 2,947.9 | $ 2,744.4
Segment profit (loss) |  |  |  |
Total segment profit | 161.0 | 157.2 | 408.6 | 365.0
Reconciliation to Operating income: |  |  |  |
Special product quality adjustments | 0.5 | 0.0 | 5.7 | (0.4)
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss) | 4.0 | (0.3) | 10.0 | 2.9
Restructuring charges | 1.9 | 0.6 | 2.1 | 1.2
Operating income | 154.6 | 156.9 | 390.8 | 361.3
Residential Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 590.5 | 572.7 | 1,663.8 | 1,524.5
Segment profit (loss) |  |  |  |
Total segment profit | 114.7 | 112.7 | 297.6 | 266.9
Commercial Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 269.4 | 251.4 | 723.5 | 674.7
Segment profit (loss) |  |  |  |
Total segment profit | 50.0 | 48.9 | 113.8 | 110.6
Refrigeration [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 192.4 | 185.9 | 560.6 | 545.2
Segment profit (loss) |  |  |  |
Total segment profit | 20.0 | 22.9 | 55.7 | 53.2
Corporate & Other [Member] |  |  |  |
Segment profit (loss) |  |  |  |
Total segment profit | $ 23.7 | $ 27.3 | $ 58.5 | $ 65.7

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