Business And Summary Of Significant Accounting Policies (Schedule Of Amounts Recognized In AOCI) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Business And Summary Of Significant Accounting Policies [Abstract]
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, beginning balance	$ (5,130)	$ (5,782)
Minimum Pension Liability, beginning balance	(15,009)	(15,471)
Total AOCI, beginning balance	(20,139)	(21,253)
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Pre tax amount	(37,813)	1,060
Minimum Pension Liability, Pre tax amount	(12,397)	743
Total AOCI, Pre tax amount	(50,210)	1,803
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Income tax effect	14,483	(408)
Minimum pension liability, income tax effect	4,691	(281)	5,667
Total AOCI, Income tax effect	19,174	(689)
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, Change, net of income tax	(23,330)	652
Minimum Pension Liability, Change, net of income tax	(7,706)	462	9,182
Total AOCI, Change, net of income tax	(31,036)	1,114
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges, ending balance	(28,460)	(5,130)	(5,782)
Minimum Pension Liability, ending balance	(22,715)	(15,009)	(15,471)
Total AOCI, ending balance	$ (51,175)	$ (20,139)	$ (21,253)