Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 106.1	$ 63.1	$ 273.1	$ 182.9
Unrealized losses on derivative financial instruments:
Unrealized gains (losses) arising during the period, net of tax expense (benefit) of $(0.5), $0.7, $(0.1) and $1.8	(0.4)	1.5	0.4	3.4
Reclassification adjustments for losses included in net income, net of tax benefit of $2.0, $1.0, $6.8 and $2.9	4.4	1.3	13.7	3.9
Currency translation adjustment - reclassification adjustment for losses included in net income, net of tax benefit of $-, $0.1, $- and $0.5	0	(0.1)	0	0.6
Net actuarial losses of defined benefit plans:
Amortization of net actuarial losses, net of tax benefit of $0.4, $0.2, $1.4 and $0.9	0.8	0.5	2.3	1.6
Other comprehensive income (loss), net of tax	4.8	3.2	16.4	9.5
Comprehensive income	110.9	66.3	289.5	192.4
Less: comprehensive income attributable to noncontrolling interest	7.3	0.2	13.6	0
Comprehensive income attributable to Trinity Industries, Inc.	$ 103.6	$ 66.1	$ 275.9	$ 192.4