Reportable Business Segments (Segment Data) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) Segment	Sep. 30, 2021 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | Segment			3
Net sales
Net sales	$ 1,244,900,000	$ 1,059,900,000	$ 3,624,600,000	$ 3,229,300,000
Segment profit (loss)
Total segment profit	189,300,000	164,800,000	533,700,000	502,000,000.0
Reconciliation to Operating income:
Special product quality adjustments	0	(1,100,000)	0	(1,000,000.0)
Items in Losses (gains) and other expenses, net that are excluded from segment profit (loss)	3,300,000	2,900,000	7,900,000	8,700,000
Restructuring charges	200,000	300,000	1,200,000	1,600,000
Operating income	185,800,000	162,700,000	524,600,000	492,700,000
Residential Heating & Cooling
Net sales
Net sales	835,300,000	711,000,000.0	2,494,900,000	2,155,300,000
Segment profit (loss)
Total segment profit	153,800,000	144,000,000.0	477,700,000	430,100,000
Residential Heating & Cooling | Sales Channel, Directly to Consumer
Reconciliation to Operating income:
Revenue from Contract with Customer, Excluding Assessed Tax	0.72	0.73	0.70	0.72
Commercial Heating & Cooling
Net sales
Net sales	252,900,000	211,500,000	660,200,000	663,400,000
Segment profit (loss)
Total segment profit	29,600,000	22,600,000	53,100,000	95,300,000
Commercial Heating & Cooling | Equipment Sales
Reconciliation to Operating income:
Revenue from Contract with Customer, Excluding Assessed Tax	0.83	0.81	0.82	0.83
Refrigeration
Net sales
Net sales	156,700,000	137,400,000	469,500,000	410,600,000
Segment profit (loss)
Total segment profit	22,400,000	14,500,000	60,000,000.0	35,800,000
Corporate and other
Segment profit (loss)
Total segment profit	$ 16,500,000	$ 16,300,000	$ 57,100,000	$ 59,200,000