Consolidated Statements of Operations (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Total revenues	$ 877.3	$ 1,187.9
Cost of revenues:
Total cost of revenues	659.7	889.9
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	102.3	96.5
Gains (losses) on dispositions of property:
Net gains on railcar lease fleet sales owned more than one year at the time of sale	0.0	2.1
Other	1.3	(0.2)
Total gains (losses) on disposition of property	1.3	1.9
Total operating profit	116.6	203.4
Other (income) expense:
Interest income	(1.7)	(1.2)
Interest expense	45.0	45.8
Other, net	0.8	(0.7)
Total other (income) expense	44.1	43.9
Income before income taxes	72.5	159.5
Provision for income taxes	20.8	57.4
Net income	51.7	102.1
Net income attributable to noncontrolling interest	5.7	4.9
Net income attributable to Trinity Industries, Inc.	$ 46.0	$ 97.2
Net income attributable to Trinity Industries, Inc. per common share:
Basic (in dollars per share)	$ 0.30	$ 0.64
Diluted (in dollars per share)	$ 0.30	$ 0.64
Weighted average number of shares outstanding:
Basic (in shares)	148.7	148.3
Diluted (in shares)	150.6	148.3
Dividends declared per common share (in dollars per share)	$ 0.11	$ 0.11
Manufacturing
Revenues:
Total revenues	$ 698.7	$ 1,010.1
Cost of revenues:
Total cost of revenues	576.1	793.9
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	56.5	61.4
Leasing
Revenues:
Total revenues	178.6	177.8
Cost of revenues:
Total cost of revenues	83.6	96.0
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	10.8	10.4
Other
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	$ 35.0	$ 24.7