Segments, Geographical (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 1,120,800	$ 1,105,800	$ 1,120,500	$ 1,101,600	$ 1,190,000	$ 1,012,400	$ 978,300	$ 912,600	$ 4,448,709	$ 4,093,266	$ 3,315,912
United States
Net Revenues by Geographic Region [Line Items]
Total net revenues									2,015,800	1,890,100	1,515,100
Other Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues									222,200	205,500	172,800
Total Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues									2,238,000	2,095,600	1,687,900
Europe Middle East And Africa [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues									1,339,800	1,189,300	953,200
Asia Pacific [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues									$ 870,900	$ 808,400	$ 674,800