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Earnings Per Common Share
 3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Common Share
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 3.2 million shares and 3.1 million shares for the three month periods ended March 31, 2013 and 2012, respectively.

The computation of basic and diluted net income attributable to Trinity Industries, Inc. follows. Amounts previously reported have been adjusted to reflect discontinued operations resulting from the sale of the Company's ready-mix concrete operations. See Note 2 Acquisitions and Divestitures.
 
Three Months Ended
March 31, 2013
 
Three Months Ended
March 31, 2012
 
(in millions, except per share amounts)
 
Income
(Loss)
 
Average
Shares
 
EPS
 
Income
(Loss)
 
Average
Shares
 
EPS
Net income from continuing operations
$
72.2

 
 
 
 
 
$
52.4

 
 
 
 
Less: net loss from continuing operations attributable to noncontrolling interest
(0.3
)
 
 
 
 
 
(0.6
)
 
 
 
 
Net income from continuing operations attributable to Trinity Industries, Inc.
72.5

 
 
 
 
 
53.0

 
 
 
 
Unvested restricted share participation
(2.3
)
 
 
 
 
 
(1.7
)
 
 
 
 
Net income from continuing operations attributable to Trinity Industries, Inc. – basic
70.2

 
76.9

 
$
0.91

 
51.3

 
77.8

 
$
0.66

Effect of dilutive securities:
 
 
 
 
 
 
 
 
 
 
 
Stock options
—

 
0.1

 
 
 
—

 
0.3

 
 
Net income from continuing operations attributable to Trinity Industries, Inc. – diluted
$
70.2

 
77.0

 
$
0.91

 
$
51.3

 
78.1

 
$
0.66

 
 
 
 
 
 
 
 
 
 
 
 
Net income (loss) from discontinued operations, net of taxes
$
6.6

 
 
 
 
 
$
(0.1
)
 
 
 
 
Unvested restricted share participation
(0.2
)
 
 
 
 
 
—

 
 
 
 
Net income (loss) from discontinued operations, net of taxes – basic
6.4

 
76.9

 
$
0.08

 
(0.1
)
 
77.8

 
$
—

Effect of dilutive securities:
 
 
 
 
 
 
 
 
 
 
 
Stock options
—

 
0.1

 
 
 
—

 
0.3

 
 
Net income (loss) from discontinued operations, net of taxes – diluted
$
6.4

 
77.0

 
$
0.08

 
$
(0.1
)
 
78.1

 
$
—