Restructuring Restructuring Details (Details) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2017 USD ($) employee		Jun. 30, 2016 USD ($) employee		Jun. 30, 2017 USD ($) employee		Jun. 30, 2016 USD ($) employee
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 4,584		$ 15,702		$ 7,315		$ 27,215
Restructuring and Related Cost, Number of Positions Eliminated | employee	150		250		350		550
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 2,773	[1]	$ 14,053	[2]	$ 5,074	[3]	$ 24,378	[4]
Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0		0		45
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	1,811		1,649		2,241		2,792
North America [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2,975		2,806		4,930		8,425
North America [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	2,687		1,488		4,465		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		0		0		45
North America [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 288		1,318		$ 465		2,167
ROW [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Number of Countries in which Entity Operates	17				17
EMEA [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 1,609		12,896		$ 2,385		18,790
EMEA [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	86		12,565		609		18,165
EMEA [Member] | Share Distribution [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			2,200
EMEA [Member] | Asset Impairments Related to Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0		0		0		0
EMEA [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 1,523		$ 331		$ 1,776		$ 625

[1] (1)The employee severance and benefit costs for the three months ended June 30, 2017 relates to the termination of approximately 150 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 three months ended June 30, 2016 related to the termination of approximately 250 employees.

[3] The employee severance and benefit costs for the six months ended June 30, 2017 relates to the termination of approximately 350 employees. Substantially all of the remaining cash payments for those costs are expected to be disbursed through December 31, 2017.

[4] (1)The employee severance and benefit costs for the six months ended June 30, 2016 related to the termination of approximately 550 employees.