Summary Of Significant Accounting Policies (Supplemental Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting Policies [Abstract]
Interest paid, net of capitalized interest	$ 39,040	$ 68,735	$ 81,000
Income taxes paid	$ 113,331	$ 43,111	$ 11,216