Investment in Affiliated Companies (Tables)

6 Months Ended

Jun. 30, 2011

Investments in Affiliated Companies [Abstract]

Operating results of affiliated companies of GATX

	Three Months Ended				Six Months Ended
	June 30				June 30
	2011		2010		2011		2010
Revenues	$	162.6	$	157.3	$	336.1	$	333.4
Pre-tax income reported by affiliates		33.4		11.0		82.5		42.1