Noncontrolling Interests (Effect Of Changes In Ownership Interest In Subsidiaries On Consolidated Equity)(Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Net Income Adjusted for Noncontrolling Interests	$ 107,074	$ 47,647
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	$ 107,074	$ 47,758