Investments in Affiliates (Tables)

12 Months Ended

Dec. 31, 2019

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments [Table Text Block]

Summarized financial statement data for all investees is presented below:

	2019		2018		2017
Revenue	$	330.2	$	329.8	$	292.7
Gross profit	94.6		91.0		88.9
Net income (loss)	15.5		19.4		20.7

	2019		2018
Current assets	$	114.2	$	123.6
Noncurrent assets	80.3		74.4
Current liabilities	18.8		16.9
Noncurrent liabilities	96.1		54.2

Investees and equity ownership percentages are presented below:

	Equity Ownership %
Combined Metals of Chicago, LLC	40.0%
Delaco Processing, LLC	49.0%
Rockport Roll Shop LLC	50.0%
Spartan Steel Coating, LLC	48.0%

Schedule of Related Party Transactions [Table Text Block]

Transactions with all equity investees for the years indicated are presented below:

	2019		2018		2017
Sales to equity investees	$	67.6	$	104.4	$	80.6
Purchases from equity investees	42.3		31.2		33.0

Outstanding receivables and payables with all equity investees as of the end of the year indicated are presented below:

	2019		2018
Accounts receivable from equity investees	$	1.5	$	1.9
Accounts payable to equity investees	3.9		6.4