v2.4.0.8

INVESTMENTS IN UNCONSOLIDATED ENTITIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		1 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013 Two Medical Office Buildings Acquired March 2013 property	Feb. 28, 2013 Two Medical Office Buildings Acquired March 2013	Jun. 30, 2013 Unconsolidated Properties property	Dec. 31, 2012 Unconsolidated Properties property	Jun. 30, 2013 Unconsolidated Properties Minimum	Dec. 31, 2012 Unconsolidated Properties Minimum	Jun. 30, 2013 Unconsolidated Properties Maximum	Dec. 31, 2012 Unconsolidated Properties Maximum	Jun. 30, 2013 ATRIA	Dec. 31, 2012 ATRIA
Equity Method Investments and Joint Ventures [Abstract]
Management fees earned in connection with unconsolidated entities	$ 1.1	$ 1.9	$ 2.6	$ 3.7
Equity method investments
Ownership interests accounted for under the equity method (as a percent)									5.00%	5.00%	25.00%	25.00%	34.00%	34.00%
Number of properties accounted for under equity method							53	55
Ownership interests in properties accounted for under the equity method (as a percent)					95.00%
Number of real estate properties					2
Purchase of joint venture interests					55.2
Investment in joint ventures						0.2
Fair value of previously held equity interest						1.5
Gain on re-measurement of equity method investments					$ 1.3

X

- Definition

Amount of cash paid to acquire the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Percentage of voting equity interests acquired in the business combination.

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In a business combination achieved in stages, this element represents the acquisition-date fair value of the equity interest in the acquiree held by the acquirer immediately before the acquisition date.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Revenue, comprised of base and incentive revenue derived from the management of joint ventures, managing third-party properties, or another entity's operations.

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The number of businesses acquired by the entity during the period.

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The number of properties that are accounted for under the equity method of accounting.

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