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Restructuring Charges (Narrative) (Details) (2010 Restructuring Plan [Member], USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Workforce Reduction [Member]
Estimated pre-tax restructuring charges	$ 22.9
Restructuring charges incurred to date	22.7
Excess Facilities [Member]
Estimated pre-tax restructuring charges	10.6
Restructuring charges incurred to date	1.5
Stock-Based Compensation Expense [Member]
Restructuring charges incurred to date	$ 15.4

Amount of costs incurred to date for the specified type of restructuring cost.

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.