Segments, Geographical (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 1,185.6	$ 1,118.3	$ 3,395.5	$ 3,224.6
United states
Net Revenues by Geographic Region [Line Items]
Total net revenues	604.6	507.6	1,761.8	1,513.6
Other americas
Net Revenues by Geographic Region [Line Items]
Total net revenues	56.7	52.7	166.7	165.3
Americas
Net Revenues by Geographic Region [Line Items]
Total net revenues	661.3	560.3	1,928.5	1,678.9
EMEA
Net Revenues by Geographic Region [Line Items]
Total net revenues	306.5	321.3	898.0	927.7
Asia Pacific
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 217.8	$ 236.7	$ 569.0	$ 618.0