Schedule III: Real Estate and Accumulated Depreciation - Details of Real Estate and Accumulated Depreciation (Continuing Care Retirement Community) (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Held-for-sale
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	$ 0
Initial Cost to Company
Land and improvements	4,141
Building and Improvements	20,364
Costs Capitalized Subsequent to Acquisition	(13,844)
Gross Amount at Which Carried As of Year End
Land and improvements	4,141
Buildings and Improvements	6,520
Total	10,661
Accumulated Depreciation	(2,821)
Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	356,750
Initial Cost to Company
Land and improvements	2,887,257
Building and Improvements	11,334,757
Costs Capitalized Subsequent to Acquisition	5,692,420
Gross Amount at Which Carried As of Year End
Land and improvements	2,918,758
Buildings and Improvements	16,995,676
Total	19,914,434
Accumulated Depreciation	(4,083,030)
Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	106,247
Initial Cost to Company
Land and improvements	156,503
Building and Improvements	1,582,459
Costs Capitalized Subsequent to Acquisition	306,154
Gross Amount at Which Carried As of Year End
Land and improvements	168,009
Buildings and Improvements	1,877,107
Total	2,045,116
Accumulated Depreciation	(435,849)
3089 Birmingham, AL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	6,193
Building and Improvements	32,146
Costs Capitalized Subsequent to Acquisition	7,845
Gross Amount at Which Carried As of Year End
Land and improvements	6,670
Buildings and Improvements	39,514
Total	46,184
Accumulated Depreciation	(9,716)
3090 Bradenton, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	5,216
Building and Improvements	88,090
Costs Capitalized Subsequent to Acquisition	29,437
Gross Amount at Which Carried As of Year End
Land and improvements	6,037
Buildings and Improvements	116,706
Total	122,743
Accumulated Depreciation	(27,956)
2997 Clearwater, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	64,402
Initial Cost to Company
Land and improvements	6,680
Building and Improvements	132,521
Costs Capitalized Subsequent to Acquisition	23,978
Gross Amount at Which Carried As of Year End
Land and improvements	7,317
Buildings and Improvements	155,862
Total	163,179
Accumulated Depreciation	(27,404)
3086 Jacksonville, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	19,660
Building and Improvements	167,860
Costs Capitalized Subsequent to Acquisition	27,057
Gross Amount at Which Carried As of Year End
Land and improvements	21,211
Buildings and Improvements	193,366
Total	214,577
Accumulated Depreciation	(38,594)
2996 Leesburg, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	8,941
Building and Improvements	65,698
Costs Capitalized Subsequent to Acquisition	20,758
Gross Amount at Which Carried As of Year End
Land and improvements	9,817
Buildings and Improvements	85,580
Total	95,397
Accumulated Depreciation	(19,236)
2995 Port Charlotte, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	5,344
Building and Improvements	159,612
Costs Capitalized Subsequent to Acquisition	21,429
Gross Amount at Which Carried As of Year End
Land and improvements	7,102
Buildings and Improvements	179,283
Total	186,385
Accumulated Depreciation	(30,007)
2998 Seminole, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	41,845
Initial Cost to Company
Land and improvements	14,080
Building and Improvements	77,485
Costs Capitalized Subsequent to Acquisition	14,823
Gross Amount at Which Carried As of Year End
Land and improvements	15,047
Buildings and Improvements	91,341
Total	106,388
Accumulated Depreciation	(14,930)
3085 Seminole, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	13,038
Building and Improvements	116,819
Costs Capitalized Subsequent to Acquisition	11,766
Gross Amount at Which Carried As of Year End
Land and improvements	13,834
Buildings and Improvements	127,789
Total	141,623
Accumulated Depreciation	(28,051)
3092 Sun City Center, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	25,254
Building and Improvements	175,535
Costs Capitalized Subsequent to Acquisition	25,544
Gross Amount at Which Carried As of Year End
Land and improvements	26,918
Buildings and Improvements	199,415
Total	226,333
Accumulated Depreciation	(46,179)
3087 The Villages, FL | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	6,311
Building and Improvements	113,061
Costs Capitalized Subsequent to Acquisition	19,819
Gross Amount at Which Carried As of Year End
Land and improvements	6,707
Buildings and Improvements	132,484
Total	139,191
Accumulated Depreciation	(26,539)
3084 Holland, MI | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	1,572
Building and Improvements	88,960
Costs Capitalized Subsequent to Acquisition	13,297
Gross Amount at Which Carried As of Year End
Land and improvements	2,134
Buildings and Improvements	101,695
Total	103,829
Accumulated Depreciation	(19,395)
2991 Coatesville, PA | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	12,949
Building and Improvements	126,243
Costs Capitalized Subsequent to Acquisition	22,116
Gross Amount at Which Carried As of Year End
Land and improvements	13,616
Buildings and Improvements	147,692
Total	161,308
Accumulated Depreciation	(26,697)
3080 Haverford, PA | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	16,461
Building and Improvements	108,816
Costs Capitalized Subsequent to Acquisition	32,212
Gross Amount at Which Carried As of Year End
Land and improvements	16,461
Buildings and Improvements	141,028
Total	157,489
Accumulated Depreciation	(57,476)
3088 Spring, TX | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	3,210
Building and Improvements	30,085
Costs Capitalized Subsequent to Acquisition	13,679
Gross Amount at Which Carried As of Year End
Land and improvements	3,544
Buildings and Improvements	43,430
Total	46,974
Accumulated Depreciation	(7,776)
3081 Fort Belvoir, VA | Continuing care retirement community | Operating segment
Real Estate and Accumulated Depreciation
Encumbrances as of Year end	0
Initial Cost to Company
Land and improvements	11,594
Building and Improvements	99,528
Costs Capitalized Subsequent to Acquisition	22,394
Gross Amount at Which Carried As of Year End
Land and improvements	11,594
Buildings and Improvements	121,922
Total	133,516
Accumulated Depreciation	$ (55,893)