Long-Term Debt (Narrative) (Details)	12 Months Ended										12 Months Ended		12 Months Ended					12 Months Ended										12 Months Ended			12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2014 London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2014 Minimum [Member] London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2014 Maximum [Member] USD ($)	Dec. 31, 2014 Senior secured term loan [Member] USD ($)	Dec. 31, 2013 Senior secured term loan [Member] USD ($)	Nov. 30, 2013 Senior secured term loan [Member] USD ($)	Nov. 30, 2012 Senior secured term loan [Member] USD ($)	Dec. 31, 2014 Global ABL Facility [Member] USD ($)	Dec. 31, 2013 Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Global ABL Facility [Member] Minimum [Member]	Dec. 31, 2014 Global ABL Facility [Member] Maximum [Member]	Dec. 31, 2014 Stream [Member] Guarantee Facility [Member] NOK	Dec. 31, 2014 Stream [Member] Overdraft Facility [Member] NOK	Dec. 31, 2014 Stream [Member] Foreign Exchange Facility [Member] NOK	Dec. 31, 2014 Senior Secured Leverage Ratio Is No More Than 2.75 to 1.00 [Member]	Dec. 31, 2014 Senior Secured Leverage Ratio Is No More Than 2.75 to 1.00 [Member] Maximum [Member]	Dec. 31, 2014 Senior Secured Leverage Ratio Is Less Than 2.50 to 1.00 [Member]	Dec. 31, 2014 Senior Secured Leverage Ratio Is Less Than 2.50 to 1.00 [Member] Maximum [Member]	Dec. 31, 2014 Other Customary Restrictive Covenants [Member] Maximum [Member]	Dec. 31, 2014 Company May Incur First Lien Indebtedness Pari Passu to the Term Loan [Member] Maximum [Member]	Dec. 31, 2014 Company May Incur Second Lien Indebtedness [Member] Maximum [Member]	Dec. 31, 2014 Company May Incur Unsecured Indebtedness [Member] Maximum [Member]	Dec. 31, 2014 Company May Incur Indebtedness [Member] Global ABL Facility [Member] Maximum [Member] USD ($)	Dec. 31, 2014 United States [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 United States [Member] Global ABL Facility [Member] Minimum [Member] London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2014 United States [Member] Global ABL Facility [Member] Maximum [Member] London Interbank Offered Rate (LIBOR) [Member]	Dec. 31, 2014 Canada [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Canada [Member] Global ABL Facility [Member] Minimum [Member]	Dec. 31, 2014 Canada [Member] Global ABL Facility [Member] Maximum [Member]	Dec. 31, 2014 United Kingdom [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Australia [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Netherlands [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Belgium [Member] Global ABL Facility [Member] USD ($)	Dec. 31, 2014 Norway [Member] Global ABL Facility [Member] USD ($)
Debt Instrument [Line Items]
Long-term debt	$ 1,453,644,000	$ 986,834,000					$ 779,888,000	$ 787,059,000	$ 793,500,000	$ 650,000,000	$ 673,716,000	$ 199,630,000
Debt maturity period							7 years
Term Loan accordion feature							200,000,000
Unrestricted cash of Term Loan						75,000,000
Senior secured leverage ratio						3.50													2.75		2.50	3.25	3.50
Debt instrument, maturity date							Nov. 09, 2019
Term loan annual amortization percentage							1.00%
Percentage of capital stock in foreign subsidiaries securing Term Loan B							65.00%
Interest at base rate	2.00%
Debt instrument basis spread on variable rate	3.00%			4.00%	1.00%								1.50%	2.00%														1.25%	1.75%		1.25%	1.75%
Debt instrument rate basis step down																				0.25%
Consolidated total leverage ratio																					2.50
Reduction in cash flow	50.00%																			0.00%
Reduction in cash flow																		25.00%
Junior secured leverage ratio																								4.00
Total leverage ratio																									5.00
Indebtedness under Global ABL Facility																										1,300,000,000
Maximum Borrowing Base of accounts receivable														85.00%												85.00%
Maximum Borrowing Base of inventory													70.00%	85.00%												65.00%
Credit facility, durational term											5 years
Credit facility, maximum borrowing capacity											1,050,000,000				24,000,000	9,000,000	1,000,000										977,000,000			20,000,000			5,000,000	10,000,000	4,000,000	4,000,000	30,000,000
Credit Facility, accordion feature											300,000,000
Proceeds from revolving credit facilities	1,977,162,000	1,738,213,000	2,571,835,000
Credit facility, availability	$ 302,200,000