Segment Reporting - Schedule of Identifiable Assets (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Investment property, net	$ 13,990.7	$ 13,971.0
Cash, cash equivalents and restricted cash	62.0	90.4	$ 112.0	$ 78.2
Marketable securities	112.8	127.3
Inventory of manufactured homes	219.8	202.7
Total Notes and Other Receivables, net	832.2	617.3
Goodwill	1,084.1	1,018.4
Other intangible assets, net	374.7	402.0
Other assets, net	929.0	655.1
Total Assets	17,605.3	17,084.2
MH
Segment Reporting Information [Line Items]
Investment property, net	6,903.2	7,181.7
Cash, cash equivalents and restricted cash	34.2	49.4
Marketable securities	71.2	82.4
Inventory of manufactured homes	195.6	189.1
Total Notes and Other Receivables, net	659.5	475.2
Goodwill	533.1	467.4
Other intangible assets, net	88.0	97.9
Other assets, net	633.3	356.1
Total Assets	9,118.1	8,899.2
RV
Segment Reporting Information [Line Items]
Investment property, net	3,881.1	3,744.3
Cash, cash equivalents and restricted cash	17.0	30.3
Marketable securities	41.6	44.9
Inventory of manufactured homes	24.2	13.6
Total Notes and Other Receivables, net	116.0	96.5
Goodwill	9.5	9.5
Other intangible assets, net	29.8	32.6
Other assets, net	50.2	63.0
Total Assets	4,169.4	4,034.7
Marina
Segment Reporting Information [Line Items]
Investment property, net	3,206.4	3,045.0
Cash, cash equivalents and restricted cash	10.8	10.7
Marketable securities	0.0	0.0
Inventory of manufactured homes	0.0	0.0
Total Notes and Other Receivables, net	56.7	45.6
Goodwill	541.5	541.5
Other intangible assets, net	256.9	271.5
Other assets, net	245.5	236.0
Total Assets	$ 4,317.8	$ 4,150.3