Segments, Geographical (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 1,105,796	$ 1,012,407	$ 3,327,952	$ 2,903,325
United States
Net Revenues by Geographic Region [Line Items]
Total net revenues	502,300	481,200	1,552,300	1,368,000
Other Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	54,200	51,600	164,600	147,400
Total Americas [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	556,500	532,800	1,716,900	1,515,400
Europe Middle East And Africa [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	311,300	275,900	940,200	829,500
Asia Pacific [Member]
Net Revenues by Geographic Region [Line Items]
Total net revenues	$ 238,000	$ 203,700	$ 670,900	$ 558,400