Background And Basis of Presentation (Details)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Entity Information [Line Items]
Entity Number of Employees	130,000
Number of Languages Spoken	58
Number of Countries in which Entity Operates	31
Entity Number of Locations	150
Number of Employees, Total [Member]
Entity Information [Line Items]
Entity Number of Employees		40,000
Geographical [Domain]
Entity Information [Line Items]
Number of Countries in which Entity Operates		22