Employee Retirement Benefits (Tables)

9 Months Ended

Sep. 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 September 30,						Nine months ended September 30,
	2013			2012			2013			2012
Service cost	$	4		$	3		$	10		$	9
Interest cost	4			4			10			11
Expected return on plan assets	(5		)	(4		)	(13		)	(12		)
Amortization of actuarial loss and prior service    cost	2			2			7			5
Net periodic benefit cost	$	5		$	5		$	14		$	13