Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefits [Abstract]

Net periodic benefit costs

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

	Three Months Ended June 30,
	2020						2019
	Pension Benefits			Other Postretirement Benefits			Pension Benefits			Other Postretirement Benefits
	(In millions)
Service costs	$	61		$	1		$	57		$	1
Interest costs	89			11			104			13
Expected return on plan assets	(132		)	(16		)	(123		)	(18		)
Amortization of net actuarial (gains) losses	44			(18		)	48			(12		)
Amortization of prior service costs (credit)	(4		)	—			(4		)	(2		)
Net periodic benefit costs (credit)	$	58		$	(22	)	$	82		$	(18	)

	Six Months Ended June 30,
	2020						2019
	Pension Benefits			Other Postretirement Benefits			Pension Benefits			Other Postretirement Benefits
	(In millions)
Service costs	$	123		$	2		$	115		$	2
Interest costs	178			21			208			26
Expected return on plan assets	(264		)	(31		)	(245		)	(34		)
Amortization of net actuarial (gains) losses	89			(37		)	96			(24		)
Amortization of prior service costs (credit)	(8		)	(1		)	(8		)	(5		)
Net periodic benefit costs (credit)	$	118		$	(46	)	$	166		$	(35	)