Employee Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2013

Compensation And Retirement Disclosure [Abstract]

Net Periodic Pension Cost for Defined-Benefit Pension Plans

Net periodic pension cost for the Company’s defined-benefit pension plans was as follows, in millions:

	Three Months Ended June 30,
	2013					2012
	Qualified			Non-Qualified		Qualified			Non-Qualified
Service cost	$	1		$	—	$	1		$	—
Interest cost		10			2		10			2
Expected return on plan assets		(9	)		—		(9	)		—
Amortization of net loss		4			—		4			—
Net periodic pension cost	$	6		$	2		6			2

	Six Months Ended June 30,
	2013					2012
	Qualified			Non-Qualified		Qualified			Non-Qualified
Service cost	$	2		$	—	$	3		$	—
Interest cost		20			3		20			3
Expected return on plan assets		(18	)		—		(17	)		—
Amortization of net loss		8			1		7			1
Net periodic pension cost	$	12		$	4	$	13		$	4