Debt - Additional Information (Detail) - Term Loan Facility [Member] - USD ($)							6 Months Ended
	Jul. 30, 2025	Nov. 20, 2024	Jul. 31, 2023	Feb. 02, 2023	May 05, 2020	Jul. 31, 2018	Jun. 30, 2025
Debt Instrument [Line Items]
Principal payment on loan				$ 230,000,000			$ 40,000,000
Principal amount outstanding				$ 800,000,000			$ 200,000,000
Line of credit, maturity date							Jul. 31, 2025
Line of credit, extended maturity date				Jul. 31, 2025			Jul. 31, 2026
Repayments of principal balance							$ 1,400,000,000
Debt instrument extended maturity term				2 years
Subsequent Event [Member]
Debt Instrument [Line Items]
Line of credit, extended maturity date	Jul. 31, 2026
Fee on the outstanding balance Exercise of the extension option	2.00%
Incremental facility fee	$ 4,000,000
Berkshire Hathaway [Member]
Debt Instrument [Line Items]
Date of senior secured term loan agreement						Jul. 31, 2018
Principal amount outstanding						$ 2,000,000,000
Line of credit, maturity date							Jul. 31, 2023
Line of credit, extended maturity date		Jul. 31, 2026					Jul. 31, 2025
Minimum rental income to achieve from tenants on annual basis to access incremental funding facility							$ 200,000,000
Minimum rental income to achieve from tenants for succeeding four consecutive fiscal quarters to access incremental funding facility							200,000,000
Minimum net worth required for loan documentation on book basis							$ 1,200,000,000
Default interest rate on overdue amounts excess of base interest rate					2.00%		2.00%
Deferred interest					$ 400,000,000
Debt instrument extended maturity term		1 year					2 years
Principal reduced by maturity date			$ 800,000,000
Percentage of operating partnership payment on extension fee		2.00%
Operating partnership payment on extension fee		$ 4,000,000
Incremental facility fee		$ 4,000,000
Berkshire Hathaway [Member] | Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio for each fiscal quarter after December 31, 2023							1.20%
Unencumbered fixed charge coverage ratio to each fiscal quarter after December 31, 2023							1.30%
Berkshire Hathaway [Member] | Maximum [Member]
Debt Instrument [Line Items]
Unencumbered fixed charge coverage ratio							60.00%
Maximum leverage ratio							65.00%
Berkshire Hathaway [Member] | Maximum [Member] | Unrestricted Cash [Member]
Debt Instrument [Line Items]
Available cash					$ 30,000,000
Berkshire Hathaway [Member] | Initial Funding [Member]
Debt Instrument [Line Items]
Principal amount outstanding						1,600,000,000
Debt instrument, base annual interest rate							7.00%
Berkshire Hathaway [Member] | Incremental Funding Facility [Member]
Debt Instrument [Line Items]
Principal amount outstanding						$ 400,000,000
Debt instrument, base annual interest rate							1.00%