Financial Instruments and Fair Value Measurements (Nonfinancial Assets Measured And Recorded At Fair Value On A Nonrecurring Basis) (Details) (Nonrecurring [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Level 3 [Member] | Continuing Operations [Member] | Fair Value [Member] | Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held and used measured at fair value		$ 3,700,000		$ 3,700,000
Long-lived assets held for sale measured at fair value		10,700,000		10,700,000
Level 3 [Member] | Discontinued Operations [Member] | Fair Value [Member] | Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held for sale measured at fair value	10,900,000	34,900,000	10,900,000	34,900,000
Level 3 [Member] | Fair Value [Member] | Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held for sale measured at fair value		45,600,000		45,600,000
Continuing Operations [Member] | Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held and used, Gain/(Loss)	0	(200,000)		(600,000)
Long-lived assets held for sale in discontinued operations, Gain/(Loss)	0	(2,600,000)	0	(3,100,000)
Discontinued Operations [Member] | Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held for sale in discontinued operations, Gain/(Loss)	0	(600,000)	(500,000)	(3,200,000)
Long Lived Assets, Fair Value Disclosure, Adjustments [Member]
Long-lived assets held for sale in discontinued operations, Gain/(Loss)				(6,300,000)
Continuing Operations [Member]
Long-lived assets held and used, Gain/(Loss)			$ 0