Retirement Plans

6 Months Ended

Jun. 30, 2016

Compensation And Retirement Disclosure [Abstract]

Retirement Plans

8. Retirement Plans

Components of net periodic pension cost consisted of the following:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2016			2015			2016			2015
	(In millions)
Service cost	$	16		$	18		$	32		$	35
Interest cost		28			26			56			52
Expected return on plan assets		(42	)		(43	)		(84	)		(85	)
Amortization of unrecognized net actuarial losses		16			20			32			39
Settlement loss		—			5			—			5
Pension expense	$	18		$	26		$	36		$	46

In 2016, we expect to contribute $27 million to our funded pension plans.  Through June 30, 2016, we have contributed $13 million to these plans.