Segments, Geographical (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended													12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013 United States	Mar. 31, 2012 United States	Mar. 31, 2013 Other Americas [Member]	Mar. 31, 2012 Other Americas [Member]	Mar. 31, 2013 Total Americas [Member]	Mar. 31, 2012 Total Americas [Member]	Mar. 31, 2013 Europe Middle East And Africa [Member]	Mar. 31, 2012 Europe Middle East And Africa [Member]	Mar. 31, 2013 Asia Pacific [Member]	Mar. 31, 2012 Asia Pacific [Member]	Mar. 31, 2013 Property, Plant, and Equipment [Member] Geographic Concentration Risk [Member] United States	Dec. 31, 2012 Property, Plant, and Equipment [Member] Geographic Concentration Risk [Member] United States
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 1,059.2	$ 1,032.5	$ 547.0	$ 468.4	$ 45.1	$ 62.9	$ 592.1	$ 531.3	$ 290.6	$ 307.1	$ 176.5	$ 194.1
Concentration Risk, Percentage													83.00%	83.00%