Employee Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures

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,
	2013			2012			2013			2012
Service cost	$	3		$	3		$	6		$	6
Interest cost	3			4			6			7
Expected return on plan assets	(4		)	(4		)	(8		)	(8		)
Amortization of actuarial loss and prior service cost	3			1			5			3
Net periodic benefit cost	$	5		$	4		$	9		$	8