Earnings Per Common Share

3 Months Ended

Mar. 31, 2012

Earnings Per Common Share [Abstract]

Earnings Per Common Share

Note 15. Earnings Per Common Share

Basic net income attributable to Trinity Industries, Inc. per common share is computed by dividing net income attributable to Trinity remaining after allocation to unvested restricted shares by the weighted average number of basic common shares outstanding for the period. Except when the effect would be antidilutive, the calculation of diluted net income attributable to Trinity per common share includes the net impact of unvested restricted shares and shares that could be issued under outstanding stock options. Total weighted average restricted shares and antidilutive stock options were 3.1 million shares and 2.9 million shares for the three month periods ended March 31, 2012 and 2011, respectively.

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

	Three Months Ended March 31, 2012							Three Months Ended March 31, 2011
	(in millions, except per share amounts)
	Income (Loss)			Average Shares		EPS		Income (Loss)			Average Shares		EPS
Net income attributable to Trinity Industries, Inc.	$	52.9						$	24.2
Unvested restricted share participation		(1.7	)						(0.9	)
Net income attributable to Trinity Industries, Inc. – basic		51.2			77.8	$	0.66		23.3			77.1	$	0.30
Effect of dilutive securities: Stock options		—			0.3				—			0.3
Net income attributable to Trinity Industries, Inc. – diluted	$	51.2			78.1	$	0.66	$	23.3			77.4	$	0.30