Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 30, 2012

Schedule Of The Components Of Other Comprehensive Loss

	Commodity Derivatives			Treasury Lock			Pension and Other Postretirement Benefit Plans			Total
	(millions of dollars)
Balance, December 31, 2011	$	(29	)	$	(10	)	$	(24	)	$	(63	)
Change in period		8			—			—			8
Balance, March 31, 2012		(21	)		(10	)		(24	)		(55	)
Change in period		6			—			(2	)		4
Balance, June 30, 2012	$	(15	)	$	(10	)	$	(26	)	$	(51	)

Schedule Of Income Tax Expense (Benefit) Allocated To Accumulated Other Comprehensive Income Loss

	Commodity Derivatives		Treasury Lock (a)		Pension and Other Postretirement Benefit Plans (a)			Total
	(millions of dollars)
For the three months ended June 30, 2012 (b)	$	6	$	—	$	(4	)	$	2
For the three months ended June 30, 2011 (b)		9		—		(2	)		7
For the six months ended June 30, 2012 (c)	$	11	$	—	$	(3	)	$	8
For the six months ended June 30, 2011 (c)		19		—		(1	)		18

(a) No material income tax effect of losses reclassified to income in the current periods.

(b) Includes tax expense for losses reclassified to income during the three months ended June 30, 2012 and 2011 of $6 million and $9 million, respectively.

(c) Includes tax expense for losses reclassified to income during the six months ended June 30, 2012 and 2011 of $11 million and $20 million, respectively.