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Revenue Recognition (Revenue by Business Segment by Geography) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | $ 1,175.4 | $ 1,102.1 | $ 2,010.2 | $ 1,895.6
Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 716.0 | 653.5 | 1,169.7 | 1,073.3
Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 292.2 | 258.6 | 497.7 | 454.1
Refrigeration [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 165.4 |  | 339.0 |
Revenue, Net | 167.2 | $ 190.0 | 342.8 | $ 368.2
UNITED STATES |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 1,095.7 |  | 1,838.3 |
UNITED STATES | Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 716.0 |  | 1,169.7 |
UNITED STATES | Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 252.1 |  | 431.2 |
UNITED STATES | Refrigeration [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 127.6 |  | 237.4 |
Europe [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 69.1 |  | 122.2 |
Europe [Member] | Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 0.0 |  | 0.0 |
Europe [Member] | Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 40.1 |  | 66.5 |
Europe [Member] | Refrigeration [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 29.0 |  | 55.7 |
Asia Pacific [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 10.6 |  | 49.7 |
Asia Pacific [Member] | Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 0.0 |  | 0.0 |
Asia Pacific [Member] | Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 0.0 |  | 0.0 |
Asia Pacific [Member] | Refrigeration [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue, Net | 10.6 |  | 49.7 |
Sales Channel, Directly to Consumer [Member] | Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 546.7 |  | 886.3 |
Sales Channel, Through Intermediary [Member] | Residential Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 169.3 |  | 283.4 |
Equipment Sales [Member] | Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 279.3 |  | 457.2 |
Commercial Heating and Cooling [Member] | Commercial Heating and Cooling [Member] |  |  |  |
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 12.9 |  | $ 40.5 |

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