Investments in Real Estate (Tables)

12 Months Ended

Dec. 31, 2011

Investments in Real Estate [Abstract]

Property acquisitions pro forma revenue and income

The following pro forma total revenue and income from continuing operations, for 2011 and 2010, assumes the 2011 property acquisitions took place on January 1, 2010 (in millions):

	Total revenue		Income from continuing operations
Supplemental pro forma for the year ended December 31, 2011(1)	$	467.9	$	156.2
Supplemental pro forma for the year ended December 31, 2010(1)	$	420.8	$	130.5

(1) This unaudited pro forma supplemental information does not purport to be indicative of what our operating results would have been had the acquisitions occurred on January 1, 2010, and may not be indicative of future operating results. No material, non-recurring pro-forma adjustments were included in the calculation of this information.