Defined Benefit Pension Plan	3 Months Ended
	May 31, 2022
Retirement Benefits [Abstract]
Defined Benefit Pension Plan	Defined Benefit Pension PlanIn the Company's Precoat Metals segment, certain employees of the Company participate in a defined benefit pension plan sponsored and administered by the Company. The pension plan calls for benefits to be paid to eligible employees at retirement, based primarily upon years of service and compensation rates near retirement. In conjunction with the acquisition of Precoat Metals, the Company assumed an accumulated benefit obligation in excess of related plan assets associated with the defined benefit pension plan of $44.9 million, which is included in "Other long-term liabilities" in the consolidated balance sheets. See Note 2 for a discussion of the acquisition of Precoat Metals.