Schedule IV - Schedule of Mortgage Loans on Real Estate (Parenthetical) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Mortgage Loans on Real Estate [Line Items]
Prior Liens	$ 0
Carrying amount of mortgages, federal income tax purposes	159,300,000
Fair value of mortgage loans part of ongoing bankruptcy proceedings	99,500,000
Credit loss reserve	170,000,000	$ 1,500,000,000	$ 10,000,000
Colombia [Member]
Mortgage Loans on Real Estate [Line Items]
Reserves/writedowns	$ 18,000,000