Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Expenses in the Special items
Adjustment or impairment of assets and obligations, net	$ 8.4	$ 11.4	$ (1.5)
Consulting and professional fees	26.0	4.9	11.7
Employee severance and retention, including share-based compensation acceleration	23.1	6.7	19.0
Information technology integration	0.5	0.1	1.1
Vacated facilities		0.2	1.4
Facility and employee relocation	3.2	2.0	5.4
Distributor acquisitions	2.0	1.9	1.1
Certain litigation matters	0.1	(0.3)	23.4
Contract terminations	6.3	3.9	9.4
Other	5.6	3.9	4.3
Special items	$ 75.2	$ 34.7	$ 75.3