Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	24 Months Ended	36 Months Ended
Dec. 31, 2010 years	Dec. 31, 2011
Goodwill And Other Intangible Assets [Abstract]
Projection of revenue period, years	5
Discounted cash flow terminal value	5.5 times year five EBITDA
Discount rate	8.50%
Change in discount rate, basis points	100
Asset impairment charges		$ 0

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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