Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of 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	)
Change in period		4			—			—			4
Balance, September 30, 2012	$	(11	)	$	(10	)	$	(26	)	$	(47	)

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

	Commodity Derivatives		Treasury Lock		Pension and Other Postretirement Benefit Plans			Total
	(millions of dollars)
For the three months ended September 30, 2012 (a)	$	2	$	1	$	1		$	4
For the three months ended September 30, 2011 (a)		7		1		(2	)		6
For the nine months ended September 30, 2012 (b)	$	13	$	1	$	(2	)	$	12
For the nine months ended September 30, 2011 (b)		26		1		(3	)		24

(a) Includes tax expense for losses reclassified to income during the three months ended September 30, 2012 and 2011 of $2 million and $7 million, respectively.

(b) Includes tax expense for losses reclassified to income during the nine months ended September 30, 2012 and 2011 of $13 million and $25 million, respectively.