Noncontrolling Interests (Effect Of Changes In Ownership Interest In Subsidiaries On Equity)(Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net income adjusted for noncontrolling interests	$ 31,419	$ 1,703	$ 52,616	$ 17,799
Net increase in equity for the acquisition of noncontrolling interests			0	1,668
Change from net income adjusted for noncontrolling interests and transfers from the noncontrolling interests			$ 52,616	$ 19,467