Restructuring Restructuring Details (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016 USD ($) numberofemployees		Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) numberofemployees		Jun. 30, 2015 USD ($)	Jan. 26, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring Revenue			$ 13,400			$ 28,300
Restructuring charges	$ 16,085		0	$ 28,529		0
Number of employees terminated | numberofemployees	250			750
Restructuring Loss			$ 1,500			$ 5,800
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 14,444	[1]		$ 25,763	[2]
Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				4,700
Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0			45
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,641			2,721
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,800			8,400
North America [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,488			6,213
North America [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges				2,600
North America [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0			45
North America [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,318			2,167
ROW [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 600			$ 3,900
ROW [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates	6			6
ROW [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 394			$ 3,721
ROW [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0			0
ROW [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0			0
ROW [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	202			225
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 12,700			$ 16,200
EMEA [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates	11			11			4
EMEA [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 12,562			$ 15,829
EMEA [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,100			2,100
EMEA [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0			0
EMEA [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 121			$ 329

[1] The employee severance and benefit costs for the three months ended June 30, 2016 relates to the termination of approximately 250 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.

[2] The employee severance and benefit costs for the six months ended June 30, 2016 relates to the termination of approximately 750 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.