Accumulated Other Comprehensive Loss (Tables)

12 Months Ended

Dec. 31, 2011

Accumulated Other Comprehensive Loss [Abstract]

Comprehensive net income

	Amounts
	(in millions)
2012	$	14.7
2013		15.7
2014		16.8
2015		18.0
2016		19.3
2017-2021		116.1

	Year Ended December 31,
	2011			2010			2009
	(in millions)
Net income (loss) attributable to Trinity Industries, Inc.	$	142.2		$	67.4		$	(137.7	)
Other comprehensive income (loss):
Change in funded status of pension liability, net of tax expense (benefit) of $(16.9), $5.2, and $20.9		(28.6	)		8.7			35.6
Change in unrealized (loss) gain on derivative financial instruments, net of tax (benefit) expense of $0.4, $(2.6), and $14.2		0.1			(7.3	)		27.8
Other changes, net of tax benefit of $—, 0.7, and (0.0)		—			1.1			(0.1	)
Comprehensive net income (loss) attributable to Trinity Industries, Inc.	$	113.7		$	69.9		$	(74.4	)

Components of accumulated other comprehensive loss

	December 31, 2011			December 31, 2010
	(in millions)
Currency translation adjustments, net of tax benefit of $(0.2) and $(0.2)	$	(17.1	)	$	(17.1	)
Funded status of pension liability, net of tax benefit of $(41.7) and $(24.8)		(70.7	)		(42.1	)
Unrealized loss on derivative financial instruments, net of tax benefit of $(34.9) and $(21.4)		(46.2	)		(36.3	)
	$	(134.0	)	$	(95.5	)