Employee Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2012

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 June 30,						Six months ended June 30,
	2012			2011			2012			2011
Service cost	$	3		$	2		$	6		$	5
Interest cost		4			4			7			7
Expected return on plan assets		(4	)		(4	)		(8	)		(8	)
Amortization of actuarial loss and prior service cost		1			1			3			2
Net periodic benefit cost	$	4		$	3		$	8		$	6