Environmental and Legal Contingencies (Details 4) (USD $) In Millions, unless otherwise specified	9 Months Ended									3 Months Ended
	Sep. 30, 2014 Antitrust Case [Member]	Jul. 31, 2013 MOFCOM [Member] Preliminary [Member] Countervailing Duty [Member] CHINA	Jul. 31, 2013 MOFCOM [Member] Final [Member] CHINA	Jul. 31, 2013 MOFCOM [Member] Final [Member] Antidumping Duty [Member] CHINA	Jul. 31, 2013 MOFCOM [Member] Final [Member] Countervailing Duty [Member] CHINA	Mar. 05, 2014 US Trade Case - GOES [Member] Preliminary [Member] Countervailing Duty [Member] CHINA	Mar. 19, 2014 US Trade Case - NOES [Member] Preliminary [Member] Countervailing Duty [Member] CHINA	Mar. 19, 2014 US Trade Case - NOES [Member] Preliminary [Member] Countervailing Duty [Member] Leicong Industrial Company [Member] TAIWAN, PROVINCE OF CHINA	Mar. 19, 2014 US Trade Case - NOES [Member] Preliminary [Member] Countervailing Duty [Member] All Other Producers [Member] TAIWAN, PROVINCE OF CHINA	Sep. 30, 2014 Breach Of Contract Case [Member]	Oct. 07, 2014 Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Countervailing Duty [Member] CHINA	Oct. 07, 2014 Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Countervailing Duty [Member] Leicong Industrial Company [Member] TAIWAN, PROVINCE OF CHINA	Oct. 07, 2014 Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Countervailing Duty [Member] All Other Producers [Member] TAIWAN, PROVINCE OF CHINA	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] CHINA	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] GERMANY	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] JAPAN	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] KOREA, REPUBLIC OF	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] SWEDEN	Oct. 07, 2014 Maximum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] TAIWAN, PROVINCE OF CHINA	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] CHINA	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] GERMANY	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] JAPAN	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] KOREA, REPUBLIC OF	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] SWEDEN	Oct. 07, 2014 Minimum [Member] Subsequent Event [Member] US Trade Case - NOES [Member] Final [Member] Antidumping Duty [Member] TAIWAN, PROVINCE OF CHINA
Loss Contingencies [Line Items]
Payment in Litigation Settlement	$ 5.8
Duty Rate		11.70%	11.20%	7.80%	3.40%	49.15%	125.83%	12.82%	6.41%		158.88%	17.12%	8.80%	407.52%	98.84%	204.79%	6.91%	126.72%	52.23%	407.52%	86.29%	135.59%	6.91%	98.46%	28.14%
Loss Contingency, Damages Sought, Value										11.8
Loss Contingency, Range of Possible Loss, Minimum										12.0
Loss Contingency, Range of Possible Loss, Maximum										$ 14.0