Fair Value Measurements (Schedule Of Non-Recurring Fair Value Measurement Of Long-Lived Assets Held For Sale) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale	$ 2.2
Long-lived assets held for sale, Total Loss	6.0
Level 1 [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale
Level 2 [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale
Level 3 [Member]
Long Lived Assets Held-for-sale [Line Items]
Long-lived assets held for sale	$ 2.2