Penson and Other Postretirement Benefit Plans (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2011

Jun. 30, 2011

Pension And Other Postretirement Benefit Expense Table [Abstract]

Pension and OPEB Cost

	Pension Benefits								Other Postretirement Benefits
	Three Months Ended				Six Months Ended				Three Months Ended				Six Months Ended
	June 30,				June 30,				June 30,				June 30,
(In millions)	2011		2010		2011		2010		2011		2010		2011		2010
Service cost	$	-	$	1	$	1	$	1	$	1	$	1	$	1	$	1
Interest cost		57		61		114		120		5		6		10		11
Expected long-term return on plan assets		(68)		(63)		(133)		(126)		(1)		(1)		(1)		(1)
Amortization of:
Net loss from past experience		10		7		19		14		-		-		-		-
Prior service cost		-		-		-		-		(4)		(5)		(8)		(9)
Net pension cost	$	(1)	$	6	$	1	$	9	$	1	$	1	$	2	$	2

	Pension Benefits								Other Postretirement Benefits
	Three Months Ended				Six Months Ended				Three Months Ended				Six Months Ended
	June 30,				June 30,				June 30,				June 30,
(In millions)	2011		2010		2011		2010		2011		2010		2011		2010
Service cost	$	-	$	1	$	1	$	1	$	1	$	1	$	1	$	1
Interest cost		57		61		114		120		5		6		10		11
Expected long-term return on plan assets		(68)		(63)		(133)		(126)		(1)		(1)		(1)		(1)
Amortization of:
Net loss from past experience		10		7		19		14		-		-		-		-
Prior service cost		-		-		-		-		(4)		(5)		(8)		(9)
Net pension cost	$	(1)	$	6	$	1	$	9	$	1	$	1	$	2	$	2