Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of basic and diluted net income attributable to Trinity Industries, Inc.

The computation of basic and diluted net income attributable to Trinity Industries, Inc. follows.

	Year Ended December 31, 2016
	(in millions, except per share amounts)
	Income (Loss)			Average Shares	EPS
Net income attributable to Trinity Industries, Inc.	$	343.6
Unvested restricted share participation	(9.4		)
Net income attributable to Trinity Industries, Inc. – basic	334.2			148.4	$	2.25
Effect of dilutive securities:
Stock options	—			—
Convertible subordinated notes	—			0.2
Net income attributable to Trinity Industries, Inc. – diluted	$	334.2		148.6	$	2.25

	Year Ended December 31, 2015
	(in millions, except per share amounts)
	Income (Loss)			Average Shares	EPS
Net income attributable to Trinity Industries, Inc.	$	796.5
Unvested restricted share participation	(24.1		)
Net income attributable to Trinity Industries, Inc. – basic	772.4			150.2	$	5.14
Effect of dilutive securities:
Stock options	—			—
Convertible subordinated notes	0.3			2.0
Net income attributable to Trinity Industries, Inc. – diluted	$	772.7		152.2	$	5.08

	Year Ended December 31, 2014
	(in millions, except per share amounts)
	Income (Loss)			Average Shares	EPS
Net income attributable to Trinity Industries, Inc.	$	678.2
Unvested restricted share participation	(22.1		)
Net income attributable to Trinity Industries, Inc. – basic	656.1			151.0	$	4.35
Effect of dilutive securities:
Stock options	—			0.1
Convertible subordinated notes	0.7			5.6
Net income attributable to Trinity Industries, Inc. – diluted	$	656.8		156.7	$	4.19