Penson and Other Postretirement Benefit Plans (Tables)

3 Months Ended

6 Months Ended

Jun. 30, 2012

Jun. 30, 2012

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)	2012		2011		2012		2011		2012		2011		2012		2011
Service cost	$	-	$	-	$	1	$	1	$	1	$	1	$	1	$	1
Interest cost		50		57		99		114		4		5		8		10
Expected long-term return on plan assets		(67)		(68)		(134)		(133)		-		(1)		-		(1)
Amortization of:
Net loss from past experience		15		10		30		19		-		-		-		-
Prior service cost		-		-		-		-		(3)		(4)		(6)		(8)
Settlement loss		-		-		6		-		-		-		-		-
Net cost	$	(2)	$	(1)	$	2	$	1	$	2	$	1	$	3	$	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)	2012		2011		2012		2011		2012		2011		2012		2011
Service cost	$	-	$	-	$	1	$	1	$	1	$	1	$	1	$	1
Interest cost		50		57		99		114		4		5		8		10
Expected long-term return on plan assets		(67)		(68)		(134)		(133)		-		(1)		-		(1)
Amortization of:
Net loss from past experience		15		10		30		19		-		-		-		-
Prior service cost		-		-		-		-		(3)		(4)		(6)		(8)
Settlement loss		-		-		6		-		-		-		-		-
Net cost	$	(2)	$	(1)	$	2	$	1	$	2	$	1	$	3	$	2