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Other Financial Information, Restructuring (Details) (USD $)
In Millions
9 Months Ended
Sep. 30, 2011
Restructuring Reserve [Roll Forward] 
Beginning Balance$ 7.9
Charges16.8
Cash payments(8.0)
Non-cash settlements and other adjustments3.4
Ending Balance13.3
Facilities [Member]
 
Restructuring Reserve [Roll Forward] 
Beginning Balance7.7
Charges0.1
Cash payments(5.2)
Non-cash settlements and other adjustments1.5
Ending Balance1.1
Severance [Member]
 
Restructuring Reserve [Roll Forward] 
Beginning Balance0.2
Charges16.7
Cash payments(2.8)
Non-cash settlements and other adjustments1.9
Ending Balance$ 12.2