Business Segments - Summary of Information for Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Summary information for the reportable segments
Rental and other property revenues	$ 45,674	$ 50,697	$ 89,942	$ 100,691
Property operating expenses	18,783	19,708	36,287	38,929
Other operating expenses not allocated to segments	24,921	43,824	49,595	76,414
Total operating expenses	43,704	63,532	85,882	115,343
Proportionate property net operating income (loss)	1,970	(12,835)	4,060	(14,652)
Other items included in income before income tax	(2,243)	312,003	(14,282)	319,876
Income (loss) before income tax	(273)	299,168	(10,222)	305,224
Segment Reconciling Items [Member]
Summary information for the reportable segments
Rental and other property revenues	1,591	1,461	3,288	3,122
Property operating expenses	1,627	1,439	3,304	3,076
Total operating expenses	1,627	1,439	3,304	3,076
Proportionate property net operating income (loss)	(36)	22	(16)	46
Income (loss) before income tax	(36)	22	(16)	46
Corporate Non-Segment [Member]
Summary information for the reportable segments
Rental and other property revenues		11,749		22,749
Property operating expenses	1,456	6,205	2,880	11,744
Other operating expenses not allocated to segments	24,921	43,824	49,595	76,414
Total operating expenses	26,377	50,029	52,475	88,158
Proportionate property net operating income (loss)	(26,377)	(38,280)	(52,475)	(65,409)
Other items included in income before income tax	(2,243)	312,003	(14,282)	319,876
Income (loss) before income tax	(28,620)	273,723	(66,757)	254,467
Development and Redevelopment [Member] | Operating Segments [Member]
Summary information for the reportable segments
Rental and other property revenues	3,640	33	5,842	81
Property operating expenses	2,684	363	4,708	572
Total operating expenses	2,684	363	4,708	572
Proportionate property net operating income (loss)	956	(330)	1,134	(491)
Income (loss) before income tax	956	(330)	1,134	(491)
Operating Portfolio Segment [Member] | Operating Segments [Member]
Summary information for the reportable segments
Rental and other property revenues	37,011	33,809	73,683	66,739
Property operating expenses	11,496	10,563	22,683	20,960
Total operating expenses	11,496	10,563	22,683	20,960
Proportionate property net operating income (loss)	25,515	23,246	51,000	45,779
Income (loss) before income tax	25,515	23,246	51,000	45,779
Other [Member] | Operating Segments [Member]
Summary information for the reportable segments
Rental and other property revenues	3,432	3,645	7,129	8,000
Property operating expenses	1,520	1,138	2,712	2,577
Total operating expenses	1,520	1,138	2,712	2,577
Proportionate property net operating income (loss)	1,912	2,507	4,417	5,423
Income (loss) before income tax	$ 1,912	$ 2,507	$ 4,417	$ 5,423