Reportable Business Segments (Net Sales and Segment Profit (Loss) and Reconciliation to Income from Continuing Operations) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 4,718,400,000	$ 4,194,100,000	$ 3,634,100,000
Segment Profit (Loss)
Total segment profit	(665,800,000)	(603,900,000)	(506,700,000)
Reconciliation to Operating income:
Special Product Quality Adjustment	0	(2,500,000)	1,000,000.0
Insurance recoveries received for property damage incurred from natural disaster	0	0	3,100,000
Items in (Gains) Losses and other expenses, net that are excluded from segment profit (loss)	8,100,000	14,300,000	13,300,000
Restructuring charges	1,500,000	1,800,000	10,800,000
Operating income	656,200,000	$ 590,300,000	$ 478,500,000
Revenue from transactions with major customers	$ 0
Minimum percentage of consolidated net sales from single customer	10.00%	10.00%	10.00%
Residential Heating & Cooling [Member]
Segment Reporting Information [Line Items]
Revenues	$ 3,198,300,000	$ 2,775,600,000	$ 2,361,500,000
Segment Profit (Loss)
Total segment profit	(596,900,000)	(540,300,000)	(428,500,000)
Commercial Heating & Cooling [Member]
Segment Reporting Information [Line Items]
Revenues	900,700,000	864,800,000	800,900,000
Segment Profit (Loss)
Total segment profit	(80,900,000)	(110,900,000)	(136,900,000)
Refrigeration [Member]
Segment Reporting Information [Line Items]
Revenues	619,400,000	553,700,000	471,700,000
Segment Profit (Loss)
Total segment profit	(78,800,000)	(49,100,000)	(32,800,000)
Corporate & other [Member]
Segment Profit (Loss)
Total segment profit	$ (90,800,000)	$ (96,400,000)	$ (91,500,000)