Schedule II - Schedule of Valuation and Qualifying Accounts (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Increase in accounts receivable reserves	$ 384.0	$ 261.0
Decrease in accounts receivable reserves	520.0
Increase in straight-line rent receivable reserves		259.0
Increase (decrease) in real estate impairment reserves	86.0	89.0	$ 170.6
Write-off of previously reserved accounts receivable		11.0
Equity investment impairments reserves related to disposals	138.0
Increase in accounts receivable and other reserves			0.5
Decrease in accounts receivable and other reserves			11.7
Increase (decrease) in real estate impairment reserves related to disposals	(12.0)	(170.0)	(2.9)
Increase in credit loss reserves on financing-type receivables	1,500.0	10.0	114.0
Decrease in credit loss reserves on financing-type receivables	826.0	35.0	26.4
Increase in equity investment impairments	500.0	90.0
Recovery of previously reserved interest		50.0
Watsonville, California [Member]
Provision (recovery) for credit loss			15.0
Valuation Allowance, Deferred Tax Asset [Member]
Increase (decrease) in valuation allowances	$ 302.0	$ 47.0	$ 9.8