Employee Retirement Benefits (Tables)

9 Months Ended

Sep. 30, 2011

Components of Net Periodic Costs for Qualified and Supplemental Pension Plans

The following summarizes the components of net periodic costs for our qualified and supplemental pension plans:

(In millions)	Three months ended September 30,						Nine months ended September 30,
	2011			2010			2011			2010
Service cost	$	3		$	2		$	8		$	7
Interest cost		4			3			11			10
Expected return on plan assets		(4	)		(3	)		(12	)		(10	)
Amortization of actuarial loss and prior service cost		1			1			3			2
Net periodic benefit cost	$	4		$	3		$	10		$	9