Consolidated Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 392.4	$ 253.7	$ 145.7
Unrealized losses on derivative financial instruments:
Unrealized gains (losses) arising during the period, net of tax expense (benefit) of $0.8, $4.2, and $(1.9)	0.8	7.2	(3.9)
Reclassification adjustments for losses included in net income, net of tax benefit of $8.7, $3.2, and $2.3	18.1	5.8	4.1
Currency translation adjustment – reclassification adjustment for losses included in net income, net of tax benefit of $-, $0.4, and $-	0	0.6	0
Net actuarial gains (losses) of defined benefit plans:
Unrealized gains (losses) arising during the period, net of tax expense (benefit) of $31.0, $(17.8), and $(17.5)	52.7	(30.3)	(29.8)
Amortization of net actuarial losses, net of tax benefit of $1.9, $1.1, and $0.6	3.1	2.2	1.2
Other comprehensive income (loss), net of tax	74.7	(14.5)	(28.4)
Comprehensive income	467.1	239.2	117.3
Less: comprehensive income attributable to noncontrolling interest	21.1	0.1	3.6
Comprehensive income attributable to Trinity Industries, Inc.	$ 446.0	$ 239.1	$ 113.7