Asset Retirement Obligations (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Change in Asset Retirement Obligation [Table Text Block]

The Company recognizes asset retirement obligations for the removal and disposal of residues; dismantling of certain tanks required by governmental authorities; cleaning and dismantling costs for owned rail cars; and cleaning costs for leased rail cars and barges. The following table reflects changes in the carrying values of asset retirement obligations:

	June 30, 2012			December 31, 2011
(Dollars in millions)
Balance at beginning of year	$	21.3		$	17.0
Accretion expense		0.5			1.1
Revision in estimated cash flows, net		0.8			6.3
Expenses incurred		(1.2	)		(3.1	)
Balance at end of period	$	21.4		$	21.3