Segments, Geographical (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 1,150.7	$ 1,073.8	$ 2,209.9	$ 2,106.3
United States [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	610.2	537.6	1,157.2	1,006.0
Other Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	64.9	49.7	110.0	112.6
Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	675.1	587.3	1,267.2	1,118.6
EMEA [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	300.9	299.3	591.5	606.4
Asia Pacific [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 174.7	$ 187.2	$ 351.2	$ 381.3