Non-controlling Interests (Tables)

12 Months Ended

Dec. 31, 2016

Non-controlling Interest [Line Items]

Non-controlling Interests [Table Text Block]

The following table summarizes the effect of changes in our ownership interest in subsidiaries on the equity attributable to common shareholders for each of the years ended December 31:

(in thousands)	2016		2015			2014
Net income attributable to common shareholders	$	819,823	$	249,315		$	292,089
Transfers from non-controlling interests:
Increase in equity for conversion of operating partnership units	290		86			52
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	$	820,113	$	239,921		$	292,141

(1) Refer to Note 7, "Acquisitions, Dispositions, Impairment, and Discontinued Operations," for further discussion of acquisitions.