Real Estate and Other Activities - Net Assets Acquired (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Business Acquisition [Line Items]
Liabilities assumed	$ (25,424)
Total net assets acquired	724,795	$ 1,778,417
Land and Land Improvements [Member]
Business Acquisition [Line Items]
Total assets acquired	9,671
Building [Member]
Business Acquisition [Line Items]
Total assets acquired	204,526
Intangible Lease Assets
Business Acquisition [Line Items]
Total assets acquired	5,461
Mortgage Loans [Member]
Business Acquisition [Line Items]
Total assets acquired		1,090,400
Investments in Unconsolidated Real Estate Joint Ventures [Member]
Business Acquisition [Line Items]
Total assets acquired	399,456
Investments In Unconsolidated Operating Entities [Member]
Business Acquisition [Line Items]
Total assets acquired	$ 131,105	$ 688,017