Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2011
Goodwill And Other Intangible Assets [Abstract]
Date of annual goodwill impairment test	October 1 each fiscal year
Estimated useful life of intangible assets, minimum	5
Estimated useful life of intangible assets, maximum	30
Reduction of goodwill related to the realization of tax benefits	$ 6.9