Restructuring - Restructuring Costs by Segment (Details) - Restructuring Plan 2014 [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		$ 39,953		$ 39,953
Definite-lived Intangible Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		10,896		10,896
Severance and benefit costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		0		0
Lease termination costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		0		0
Allowance for doubtful accounts [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		11,810		11,810
Currency translation [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		0		0
Other restructuring costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		2,295		2,295
Inventories [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		3,081		3,081
Fixed Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring		$ 11,871		11,871
Infrastructure Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	$ 1,498		$ 10,730	$ 17,800
Infrastructure Solutions [Member] | Definite-lived Intangible Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0		0
Infrastructure Solutions [Member] | Severance and benefit costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	172		866
Infrastructure Solutions [Member] | Lease termination costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0		168
Infrastructure Solutions [Member] | Allowance for doubtful accounts [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	339		1,630
Infrastructure Solutions [Member] | Currency translation [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	44		864
Infrastructure Solutions [Member] | Other restructuring costs [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	943		7,202
Infrastructure Solutions [Member] | Inventories [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	0		0
Infrastructure Solutions [Member] | Fixed Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Pre-tax charges related to restructuring	$ 0		$ 0