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 | |||