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Non-controlling Interests Non-controlling Interests (Notes)
3 Months Ended
Mar. 31, 2015
Noncontrolling Interests [Abstract]  
Noncontrolling Interest Disclosure [Text Block]
13. Non-controlling Interests

The following table summarizes the effect of changes in our ownership interest in subsidiaries on the equity attributable to common shareholders for the periods indicated:
 
 
Three Months Ended
 
 
March 31,
(in thousands)
 
2015
 
2014
Net income attributable to common shareholders
 
$
115,599

 
40,036

Transfers from non-controlling interests:
 
 
 
 
Increase in equity for conversion of operating partnership units
 
16

 

Decrease in additional paid-in capital for purchase of remaining non-controlling ownership interests in two consolidated joint ventures (1)
 
(9,480
)
 

Change in common equity and net transfers from non-controlling interests
 
$
106,135

 
$
40,036

(1)
Refer to Note 5, "Acquisitions and Dispositions," for further discussion of acquisitions.