Income Taxes (Tables)

6 Months Ended

Jun. 30, 2012

Income Taxes [Abstract]

Tax Benefits Associated with NOL Carryforwards

The amounts of tax benefits associated with NOL carryforwards are as follows:

 

Millions of Dollars)	June 30, 2012			Dec. 31, 2011
NOL carryforwards	$	(1.0	)	$	(1.1	)