Noncontrolling Interests (Effect Of Changes In Ownership Interest In Subsidiaries On Consolidated Equity)(Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Noncontrolling Interest [Abstract]
Net Income Adjusted for Noncontrolling Interests	$ 35,816	$ 36,029	$ 142,890	$ 83,676
Transfers from the noncontrolling interests:
Increase in equity for operating partnership units			0	111
Change from net income adjusted for noncontrolling interests and transfers from the noncontrolling interests			$ 142,890	$ 83,787