Restructuring Initiatives (Charges Reportable Under Business Segment 2005 and 2009 Restructuring Programs) (Details) (2005 And 2009 Restructuring Programs [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended							87 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2007	Dec. 31, 2006	Dec. 31, 2005	Mar. 31, 2012
Charges recorded to date	$ (1.1)	$ 3.4	$ 41.3	$ 130.3	$ 17.8	$ 109.3	$ 192.1	$ 51.6	$ 544.7
Charges to be incurred on approved initiatives	1.5
Total expected charges on approved initiatives	546.2
Latin America [Member]
Charges recorded to date	0.1	2.1	13.6	19.2	1.9	14.9	34.6	3.5	89.9
Charges to be incurred on approved initiatives	0.2
Total expected charges on approved initiatives	90.1
North America [Member]
Charges recorded to date	(0.9)	(1.1)	17.8	26.7	(1.1)	7.0	61.8	6.9	117.1
Charges to be incurred on approved initiatives	(0.4)
Total expected charges on approved initiatives	116.7
Central & Eastern Europe [Member]
Charges recorded to date	0.2	1.0	0.3	25.1	1.7	4.7	6.9	1.0	40.9
Charges to be incurred on approved initiatives	1.1
Total expected charges on approved initiatives	42.0
Western Europe, Middle East & Africa [Member]
Charges recorded to date	(0.5)	0.9	(1.1)	27.4	19.0	65.1	45.1	11.7	167.6
Charges to be incurred on approved initiatives	0.7
Total expected charges on approved initiatives	168.3
Asia Pacific [Member]
Charges recorded to date	(0.1)	(0.3)	(0.3)	19.9	(0.7)	4.9	14.2	22.4	60.0
Charges to be incurred on approved initiatives	(0.1)
Total expected charges on approved initiatives	59.9
Corporate [Member]
Charges recorded to date	0.1	0.8	11.0	12.0	(3.0)	12.7	29.5	6.1	69.2
Charges to be incurred on approved initiatives	0
Total expected charges on approved initiatives	$ 69.2