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Reportable Business Segments (Segment Data) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Net sales |  |  |  |
Net sales | $ 1,175.4 | $ 1,102.1 | $ 2,010.2 | $ 1,895.6
Segment profit (loss) |  |  |  |
Total segment profit | 205.3 | 182.9 | 276.1 | 247.6
Reconciliation to Operating income: |  |  |  |
Special inventory write down | 0.0 | 0.0 | 0.2 | 0.0
One time inventory write down | 0.0 | 5.2 | 0.0 | 5.2
(Gain) loss, net on sale of business and related property | (22.1) | 0.0 | (11.8) | 0.0
Loss on assets held for sale | 31.4 | 0.0 | 31.4 | 0.0
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss) | 0.4 | 2.2 | 6.9 | 6.0
Restructuring charges | 0.5 | 0.1 | 1.3 | 0.2
Operating income | 195.1 | 175.4 | 248.1 | 236.2
Residential Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 716.0 | 653.5 | 1,169.7 | 1,073.3
Segment profit (loss) |  |  |  |
Total segment profit | 153.6 | 140.5 | 204.9 | 182.9
Commercial Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 292.2 | 258.6 | 497.7 | 454.1
Segment profit (loss) |  |  |  |
Total segment profit | 52.6 | 44.7 | 72.1 | 63.8
Refrigeration [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 167.2 | 190.0 | 342.8 | 368.2
Segment profit (loss) |  |  |  |
Total segment profit | 21.9 | 21.6 | 33.0 | 35.7
Corporate & Other [Member] |  |  |  |
Segment profit (loss) |  |  |  |
Total segment profit | 22.8 | $ 23.9 | 33.9 | $ 34.8
UNITED STATES |  |  |  |
Net sales |  |  |  |
Net sales | 1,095.7 |  | 1,838.3 |
UNITED STATES | Residential Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 716.0 |  | 1,169.7 |
UNITED STATES | Commercial Heating & Cooling [Member] |  |  |  |
Net sales |  |  |  |
Net sales | 252.1 |  | 431.2 |
UNITED STATES | Refrigeration [Member] |  |  |  |
Net sales |  |  |  |
Net sales | $ 127.6 |  | $ 237.4 |

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