Railcar Leasing and Management Services Group (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Revenues:
Total revenues	$ 1,460.5		$ 932.9
Operating profit:
Total operating profit	391.3		159.5
Selected expense information:
Depreciation	55.3		50.0
Interest:
Interest expense	46.3		49.2
Railcar Leasing and Management Services Group
Revenues:
Total revenues	442.2		134.4
Operating profit:
Total operating profit	230.3		61.6
Operating profit margin:
Total operating profit margin	52.00%		45.80%
Selected expense information:
Depreciation	32.5	[1]	31.0	[1]
Percent Change, Depreciation	4.80%	[1]
Maintenance	21.0	[1]	19.0	[1]
Percent Change, Maintenance	10.50%	[1]
Rent	13.3	[1]	13.4	[1]
Percent Change, Rent	(0.70%)	[1]
Interest:
Interest expense	37.3	[1]	40.9	[1]
Railcar Leasing and Management Services Group | Leasing and management
Revenues:
Total revenues	150.2		134.3
Percent Change	11.80%
Operating profit:
Total operating profit	63.9		54.8
Percentage Change	16.60%
Operating profit margin:
Total operating profit margin	42.50%		40.80%
Railcar Leasing and Management Services Group | Railcars owned one year or less at the time of sale
Revenues:
Total revenues	292.9		0.1
Operating profit:
Total operating profit	88.9		0
Railcar Leasing and Management Services Group | Railcars owned more than one year at the time of sale
Operating profit:
Total operating profit	77.5		6.8
Rail Group
Revenues:
Total revenues	601.1		423.6
Operating profit:
Total operating profit	167.5		102.9
Intercompany
Revenues:
Total revenues	0		0
Intercompany | Railcar Leasing and Management Services Group
Revenues:
Total revenues	0.9		0
Interest:
Interest expense	0	[1]	2.7	[1]
Intercompany | Rail Group
Revenues:
Total revenues	256.3		201.9
Total
Revenues:
Total revenues	1,460.5		932.9
Total | Railcar Leasing and Management Services Group
Revenues:
Total revenues	443.1		134.4
Percent Change	229.70%
Operating profit:
Total operating profit	230.3		61.6
Percentage Change	273.90%
Interest:
Interest expense	37.3	[1]	43.6	[1]
Percent Change, Total interest expense	(14.40%)	[1]
Total | Rail Group
Revenues:
Total revenues	$ 857.4		$ 625.5

[1] Depreciation, maintenance, and rent expense are components of operating profit. Amortization of deferred profit on railcars sold from the Rail Group to the Leasing Group is included in the operating profits of the Leasing Group resulting in the recognition of depreciation expense based on the Company's original manufacturing cost of the railcars. Interest expense is not a component of operating profit and includes the effect of hedges. Intercompany interest expense arises from Trinity’s previous ownership of a portion of TRIP Holdings’ Senior Secured Notes and is eliminated in consolidation. See Note 11 Debt.