Supplemental Cash Flow and Noncash Investing Transactions (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	2012		2011			2010
Supplemental Cash Flow Information (in millions)
Interest paid *	$	162.3	$	152.7		$	152.6
Income taxes paid (refunded), net	11.1		(2.8		)	13.0

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(*) Interest paid consisted of interest on debt obligations, interest rate swaps (net of interest received) and capital lease interest. Interest expense capitalized as part of the cost of construction of major assets was immaterial for all periods presented.

Noncash Investing Transactions

Noncash Investing Transaction (in millions)	2011
Operating assets received *	$	88.8

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(*) In connection with the dissolutions of GATX's Clipper Fourth Limited and Clipper Fourth APS affiliates, GATX received liquidating distributions of six vessels with an aggregate fair value of $88.8 million. See Note 6 for additional information.