Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2015

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Pension Cost

Components of net periodic pension cost consisted of the following:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2015			2014			2015			2014
	(In millions)
Service cost	$	18		$	13		$	35		$	25
Interest cost		26			24			52			49
Expected return on plan assets		(43	)		(40	)		(85	)		(80	)
Amortization of unrecognized net actuarial losses		20			7			39			15
Settlement loss		5			8			5			8
Pension expense	$	26		$	12		$	46		$	17