Segment Information - Revenue and Long-Lived Assets by Geography (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 segments	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of reportable segments									4
Revenue	$ 2,209,128	$ 2,252,349	$ 2,228,763	$ 2,039,573	$ 2,013,831	$ 2,097,605	$ 2,038,289	$ 1,954,614	$ 8,729,813	$ 8,104,339	$ 7,369,154
Property, Plant and Equipment, Net	1,182,982				1,167,052				1,182,982	1,167,052
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									4,562,958	4,343,946	3,923,118
Property, Plant and Equipment, Net	633,538				656,006				633,538	656,006
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,280,923	1,240,222	1,247,039
Property, Plant and Equipment, Net	225,527				216,535				225,527	216,535
Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									852,559	793,556	771,239
Property, Plant and Equipment, Net	50,197				51,096				50,197	51,096
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									1,577,886	1,488,251	1,162,103
Property, Plant and Equipment, Net	258,325				232,937				258,325	232,937
Other Geographical Area [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue									455,487	238,364	265,655
Property, Plant and Equipment, Net	$ 15,395				$ 10,478				$ 15,395	$ 10,478