Environmental and Legal Contingencies (Details 5)	Jul. 21, 2016	Jul. 12, 2016	May 25, 2016	May 17, 2016	Mar. 15, 2016	Jan. 11, 2016
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | CHINA
Duty Rates [Line Items]
Duty Rate			209.97%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | INDIA | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			4.44%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | INDIA | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			3.05%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | ITALY | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			92.12%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | ITALY | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			12.63%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			47.80%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			8.75%
US Trade Case - CORE [Member] | Antidumping Duty [Member] | Final [Member] | TAIWAN, PROVINCE OF CHINA
Duty Rates [Line Items]
Duty Rate			3.77%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | CHINA | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			241.07%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | CHINA | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			39.05%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | INDIA | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			29.46%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | INDIA | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			8.00%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | ITALY | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			38.51%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | ITALY | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			0.00%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Maximum [Member]
Duty Rates [Line Items]
Duty Rate			1.19%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Minimum [Member]
Duty Rates [Line Items]
Duty Rate			0.00%
US Trade Case - CORE [Member] | Countervailing Duty [Member] | Final [Member] | TAIWAN, PROVINCE OF CHINA
Duty Rates [Line Items]
Duty Rate			0.00%
US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | CHINA
Duty Rates [Line Items]
Duty Rate				265.79%
US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | JAPAN
Duty Rates [Line Items]
Duty Rate				71.35%
US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | CHINA
Duty Rates [Line Items]
Duty Rate				256.44%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | KOREA, REPUBLIC OF | Maximum [Member]
Duty Rates [Line Items]
Duty Rate					7.33%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | KOREA, REPUBLIC OF | Minimum [Member]
Duty Rates [Line Items]
Duty Rate					3.97%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | BRAZIL | Maximum [Member]
Duty Rates [Line Items]
Duty Rate					34.28%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | BRAZIL | Minimum [Member]
Duty Rates [Line Items]
Duty Rate					33.91%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | JAPAN | Maximum [Member]
Duty Rates [Line Items]
Duty Rate					11.29%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | JAPAN | Minimum [Member]
Duty Rates [Line Items]
Duty Rate					6.79%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | UNITED KINGDOM
Duty Rates [Line Items]
Duty Rate					49.05%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | AUSTRALIA
Duty Rates [Line Items]
Duty Rate					23.25%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | NETHERLANDS
Duty Rates [Line Items]
Duty Rate					5.07%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | TURKEY | Maximum [Member]
Duty Rates [Line Items]
Duty Rate					7.07%
US Trade Case - HotRolled [Member] | Antidumping Duty [Member] | Preliminary [Member] | TURKEY | Minimum [Member]
Duty Rates [Line Items]
Duty Rate					5.24%
US Trade Case - HotRolled [Member] | Countervailing Duty [Member] | Preliminary [Member] | KOREA, REPUBLIC OF
Duty Rates [Line Items]
Duty Rate						0.00%
US Trade Case - HotRolled [Member] | Countervailing Duty [Member] | Preliminary [Member] | BRAZIL
Duty Rates [Line Items]
Duty Rate						7.42%
US Trade Case - HotRolled [Member] | Countervailing Duty [Member] | Preliminary [Member] | TURKEY
Duty Rates [Line Items]
Duty Rate						0.00%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | INDIA
Duty Rates [Line Items]
Duty Rate	7.60%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	34.33%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	6.32%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | BRAZIL | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	35.43%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | BRAZIL | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	14.35%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | RUSSIAN FEDERATION | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	13.36%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | RUSSIAN FEDERATION | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	0.00%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | UNITED KINGDOM | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	25.56%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Antidumping Duty [Member] | Final [Member] | UNITED KINGDOM | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	5.40%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | INDIA
Duty Rates [Line Items]
Duty Rate	10.00%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	58.36%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | KOREA, REPUBLIC OF | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	3.91%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | BRAZIL | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	11.31%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | BRAZIL | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	11.09%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | RUSSIAN FEDERATION | Maximum [Member]
Duty Rates [Line Items]
Duty Rate	6.95%
Subsequent Event [Member] | US Trade Case - ColdRolled [Member] | Countervailing Duty [Member] | Final [Member] | RUSSIAN FEDERATION | Minimum [Member]
Duty Rates [Line Items]
Duty Rate	0.00%
Subsequent Event [Member] | US Trade Case - Stainless [Member] | Countervailing Duty [Member] | Preliminary [Member] | CHINA | Maximum [Member]
Duty Rates [Line Items]
Duty Rate		193.12%
Subsequent Event [Member] | US Trade Case - Stainless [Member] | Countervailing Duty [Member] | Preliminary [Member] | CHINA | Minimum [Member]
Duty Rates [Line Items]
Duty Rate		57.30%