Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Net periodic benefit costs

The components of net periodic benefit costs, reported in other expenses, were as follows:

	Three Months Ended September 30,
	2018						2017
	Pension Benefits			Other Postretirement Benefits			Pension Benefits			Other Postretirement Benefits
	(In millions)
Service costs	$	58		$	1		$	62		$	1
Interest costs	95			13			106			19
Divestitures	—			—			3			2
Expected return on plan assets	(133		)	(18		)	(129		)	(18		)
Amortization of net actuarial (gains) losses	46			(9		)	46			—
Amortization of prior service costs (credit)	(1		)	(5		)	—			(6		)
Net periodic benefit costs (credit)	$	65		$	(18	)	$	88		$	(2	)

	Nine Months Ended September 30,
	2018						2017
	Pension Benefits			Other Postretirement Benefits			Pension Benefits			Other Postretirement Benefits
	(In millions)
Service costs	$	176		$	4		$	184		$	4
Interest costs	287			39			318			57
Divestitures	—			—			3			2
Expected return on plan assets	(400		)	(54		)	(387		)	(54		)
Amortization of net actuarial (gains) losses	134			(26		)	143			—
Amortization of prior service costs (credit)	(1		)	(14		)	(1		)	(17		)
Net periodic benefit costs (credit)	$	196		$	(51	)	$	260		$	(8	)