Environmental and Legal Contingencies (Details 5) - Corrosion-Resistant Steel [Member]	Nov. 02, 2015	Jun. 03, 2015
Countervailing Duty [Member] | Preliminary [Member] | CHINA | Maximum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	235.66%
Countervailing Duty [Member] | Preliminary [Member] | CHINA | Minimum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	26.26%
Countervailing Duty [Member] | Preliminary [Member] | INDIA | Maximum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	7.71%
Countervailing Duty [Member] | Preliminary [Member] | INDIA | Minimum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	2.85%
Countervailing Duty [Member] | Preliminary [Member] | ITALY | Maximum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	38.41%
Countervailing Duty [Member] | Preliminary [Member] | ITALY | Minimum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	0.00%
Countervailing Duty [Member] | Preliminary [Member] | KOREA, REPUBLIC OF | Maximum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	1.37%
Countervailing Duty [Member] | Preliminary [Member] | KOREA, REPUBLIC OF | Minimum [Member] | Subsequent Event [Member]
Duty Rates [Line Items]
Duty Rate	0.00%
Antidumping Duty [Member] | Alleged [Member] | Maximum [Member]
Duty Rates [Line Items]
Duty Rate		120.20%
Antidumping Duty [Member] | Alleged [Member] | Minimum [Member]
Duty Rates [Line Items]
Duty Rate		71.09%