Summary of Significant Accounting Policies - Non-cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Significant Noncash Transactions [Line Items]
Consolidation of the net assets (excluding mortgages as disclosed below) of previously unconsolidated joint ventures	$ 132,300	$ 272,600	$ 0
Acquisition of non-controlling interest	2,100	0	0
Joint venture investments related to consolidation of net assets	11,600	86,400	0
Mortgages assumed, of previously unconsolidated joint ventures	73,900	196,600	0
Mortgages assumed, shopping center acquisitions	17,900	0	9,100
Accounts payable related to construction in progress	13,400	6,300	11,000
Tax receivable	2,100	0	0
Dividends declared, but not paid	28,243	14,844	44,000
Write-off of preferred share original issuance costs	5,100	0	7,200
Building [Member]
Other Significant Noncash Transactions [Line Items]
Assumption of buildings due to ground lease terminations	$ 0	$ 3,000	$ 0