CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Rental income:
Triple-net leased	$ 214,239	$ 204,561	$ 427,760	$ 407,798
Medical office buildings	110,946	89,110	222,092	153,075
Total rental income	325,185	293,671	649,852	560,873
Resident fees and services	341,594	303,437	680,764	588,630
Medical office building and other services revenue	3,537	6,639	7,185	12,247
Income from loans and investments	14,733	8,152	30,836	16,188
Interest and other income	797	65	1,835	112
Total revenues	685,846	611,964	1,370,472	1,178,050
Expenses:
Interest	83,046	72,767	162,452	140,678
Depreciation and amortization	172,706	187,367	351,495	347,563
Property-level operating expenses:
Senior living	231,337	207,031	462,245	402,165
Medical office buildings	38,401	29,621	74,942	50,324
Total property-level operating expenses	269,738	236,652	537,187	452,489
Medical office building services costs	1,667	3,839	3,306	6,827
General, administrative and professional fees	27,327	26,423	56,101	48,621
(Gain) loss on extinguishment of debt, net	(720)	9,989	(720)	39,533
Merger-related expenses and deal costs	6,667	36,668	10,929	44,649
Other	4,385	1,510	8,972	3,086
Total expenses	564,816	575,215	1,129,722	1,083,446
Income before income/loss from unconsolidated entities, income taxes, discontinued operations and noncontrolling interest	121,030	36,749	240,750	94,604
(Loss) income from unconsolidated entities	(506)	514	423	831
Income tax benefit (expense)	12,064	5,179	10,320	(6,159)
Income from continuing operations	132,588	42,442	251,493	89,276
Discontinued operations	(18,055)	31,294	(23,862)	74,552
Net income	114,533	73,736	227,631	163,828
Net (loss) income attributable to noncontrolling interest	(47)	(289)	858	(823)
Net income attributable to common stockholders	$ 114,580	$ 74,025	$ 226,773	$ 164,651
Basic:
Income from continuing operations attributable to common stockholders	$ 0.45	$ 0.15	$ 0.86	$ 0.31
Discontinued operations	$ (0.06)	$ 0.11	$ (0.08)	$ 0.26
Net income attributable to common stockholders	$ 0.39	$ 0.26	$ 0.78	$ 0.57
Diluted:
Income from continuing operations attributable to common stockholders	$ 0.45	$ 0.14	$ 0.85	$ 0.30
Discontinued operations	$ (0.06)	$ 0.11	$ (0.08)	$ 0.26
Net income attributable to common stockholders	$ 0.39	$ 0.25	$ 0.77	$ 0.56
Weighted average shares used in computing earnings per common share:
Basic	292,635	290,170	292,049	289,281
Diluted	295,123	292,592	294,584	291,711
Dividends declared per common share	$ 0.67	$ 0.62	$ 1.34	$ 1.24