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Goodwill And Other Intangibles (Schedule Of Future Period Amortization Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill and Intangible Assets Disclosure [Abstract]
Aggregate amortization expense, intangible assets	$ 20.4	$ 23.3	$ 12.6
Capitalized Computer Software, Impairments		$ 0.1	$ 0.1

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

For each income statement presented, the amount charged to expense for write-downs of capitalized computer software costs to net realizable value.

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