Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2017

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.     

	Three Months Ended March 31, 2017						Three Months Ended March 31, 2016
	Income (Loss)			Average Shares	EPS		Income (Loss)			Average Shares	EPS
	(in millions, except per share amounts)
Net income attributable to Trinity Industries, Inc.	$	46.0					$	97.2
Unvested restricted share participation	(1.2		)				(2.9		)
Net income attributable to Trinity Industries, Inc. – basic	44.8			148.7	$	0.30	94.3			148.3	$	0.64
Effect of dilutive securities:
Convertible subordinated notes	—			1.9			—			—
Net income attributable to Trinity Industries, Inc. – diluted	$	44.8		150.6	$	0.30	$	94.3		148.3	$	0.64