CONDENSED CONSOLIDATING INFORMATION (Details) (unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010
Assets
Net real estate investments	$ 16,075,323	$ 16,231,612
Cash and cash equivalents	53,224	45,807	41,899	21,812
Escrow deposits and restricted cash	114,420	76,590
Deferred financing costs, net	26,601	26,669
Other assets	919,391	891,232
Total assets	17,188,959	17,271,910
Liabilities:
Senior notes payable and other debt	6,430,364	6,429,116
Accrued interest	58,041	37,694
Accounts payable and other liabilities	1,060,647	1,085,597
Deferred income taxes	271,408	260,722
Total liabilities	7,820,460	7,813,129
Redeemable OP unitholder interests	106,264	102,837
Total equity	9,262,235	9,355,944		2,390,205
Total liabilities and equity	17,188,959	17,271,910
Ventas, Inc.
Assets
Net real estate investments	8,069	309
Cash and cash equivalents	10,045	2,335	23,205	1,083
Escrow deposits and restricted cash	40,074	1,971
Deferred financing costs, net	757	757
Investment in and advances to affiliates	8,613,968	8,612,893
Other assets	64,852	54,415
Total assets	8,737,765	8,672,680
Liabilities:
Intercompany loans	(1,270)	(68,408)
Accounts payable and other liabilities	91,822	86,101
Deferred income taxes	271,408	260,722
Total liabilities	361,960	278,415
Total equity	8,375,805	8,394,265
Total liabilities and equity	8,737,765	8,672,680
Wholly Owned Subsidiary Guarantors
Assets
Net real estate investments	3,628,813	3,629,489
Cash and cash equivalents	7,819	7,820	(4,700)	8,263
Escrow deposits and restricted cash	27,894	27,523
Deferred financing costs, net	401	434
Other assets	188,275	183,800
Total assets	3,853,202	3,849,066
Liabilities:
Senior notes payable and other debt	519,866	502,215
Intercompany loans	590,136	679,634
Accrued interest	1,514	1,431
Accounts payable and other liabilities	116,933	184,330
Total liabilities	1,228,449	1,367,610
Total equity	2,624,753	2,481,456
Total liabilities and equity	3,853,202	3,849,066
Ventas Issuers
Assets
Net real estate investments	517,996	519,042
Escrow deposits and restricted cash	7,670	7,513
Deferred financing costs, net	19,162	19,239
Investment in and advances to affiliates	1,759,522	1,728,635
Other assets	4,254	47,063
Total assets	2,308,604	2,321,492
Liabilities:
Senior notes payable and other debt	2,628,878	2,593,176
Intercompany loans	(640,968)	(655,914)
Accrued interest	31,770	12,561
Accounts payable and other liabilities	14,478	18,162
Total liabilities	2,034,158	1,967,985
Total equity	274,446	353,507
Total liabilities and equity	2,308,604	2,321,492
Non-Guarantor Subsidiaries
Assets
Net real estate investments	11,920,445	12,082,772
Cash and cash equivalents	35,360	35,652	23,394	12,466
Escrow deposits and restricted cash	38,782	39,583
Deferred financing costs, net	6,281	6,239
Other assets	662,010	605,954
Total assets	12,662,878	12,770,200
Liabilities:
Senior notes payable and other debt	3,281,620	3,333,725
Intercompany loans	52,102	44,688
Accrued interest	24,757	23,702
Accounts payable and other liabilities	837,414	797,004
Total liabilities	4,195,893	4,199,119
Redeemable OP unitholder interests	106,264	102,837
Total equity	8,360,721	8,468,244
Total liabilities and equity	12,662,878	12,770,200
Consolidated Eliminations
Assets
Investment in and advances to affiliates	(10,373,490)	(10,341,528)
Total assets	(10,373,490)	(10,341,528)
Liabilities:
Total equity	(10,373,490)	(10,341,528)
Total liabilities and equity	$ (10,373,490)	$ (10,341,528)