Consolidated Statements of Operations (unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Total revenues	$ 1,110.3	$ 907.3	$ 3,109.3	$ 2,799.0
Cost of revenues:
Total cost of revenues	836.3	728.1	2,359.6	2,250.6
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	70.6	55.8	211.1	159.5
Gains on disposition of property, plant, and equipment:
Net gains on railcar lease fleet sales owned more than one year at the time of sale	1.6	17.0	9.6	22.3
Other	0.6	0.3	0.3	4.7
Total gains on disposition of property, plant, and equipment	2.2	17.3	9.9	27.0
Total operating profit	205.6	140.7	548.5	415.9
Other (income) expense:
Interest income	(0.6)	(0.3)	(1.4)	(1.1)
Interest expense	45.8	47.8	141.5	143.6
Other, net	(0.5)	(1.5)	(2.3)	(4.5)
Other (income) expense, total	44.7	46.0	137.8	138.0
Income from continuing operations before income taxes	160.9	94.7	410.7	277.9
Provision for income taxes	55.1	32.3	143.5	97.0
Net income from continuing operations	105.8	62.4	267.2	180.9
Discontinued operations:
Gain on sale of discontinued operations, net of provision for income taxes of $-, $-, $5.4 and $-	0	0	7.1	0
Income (loss) from discontinued operations, net of provision (benefit) for income taxes of $0.1, $0.4, $(0.7) and $1.2	0.3	0.7	(1.2)	2.0
Net income	106.1	63.1	273.1	182.9
Net income (loss) attributable to noncontrolling interest	6.5	(0.1)	10.4	(1.0)
Net income attributable to Trinity Industries, Inc.	99.6	63.2	262.7	183.9
Net income attributable to Trinity Industries, Inc. per common share:
Basic, Continuing operations (in dollars per share)	$ 1.26	$ 0.79	$ 3.24	$ 2.28
Basic, Discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.07	$ 0.02
Basic (in dollars per share)	$ 1.26	$ 0.80	$ 3.31	$ 2.30
Diluted, Continuing operations (in dollars per share)	$ 1.26	$ 0.79	$ 3.24	$ 2.27
Diluted, Discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.07	$ 0.02
Diluted (in dollars per share)	$ 1.26	$ 0.80	$ 3.31	$ 2.29
Weighted average number of shares outstanding:
Basic (in shares)	76.1	76.5	76.7	77.3
Diluted (in shares)	76.2	76.7	76.8	77.5
Dividends declared per common share (in dollars per share)	$ 0.15	$ 0.11	$ 0.39	$ 0.31
Manufacturing
Revenues:
Total revenues	959.7	748.0	2,654.7	2,305.3
Cost of revenues:
Total cost of revenues	767.0	643.8	2,134.2	1,980.8
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	43.9	35.9	133.7	105.3
Leasing
Revenues:
Total revenues	150.6	159.3	454.6	493.7
Cost of revenues:
Total cost of revenues	69.3	84.3	225.4	269.8
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	8.9	7.5	27.5	20.9
Other
Selling, engineering, and administrative expenses:
Total selling, engineering, and administrative expenses	$ 17.8	$ 12.4	$ 49.9	$ 33.3