Employee Benefit Plans (Tables)

9 Months Ended

Sep. 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   September 30,
	2020				2019
	Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits
	(In millions)
Service costs	$	4	$	—	$	4	$	—
Interest costs	10		—		12		1
Expected return on plan assets	—		—		—		(1)
Amortization of net actuarial (gains) losses	10		—		6		—
Amortization of prior service costs (credit)	(1)		—		(1)		—
Allocated to affiliates	(5)		—		(6)		—
Net periodic benefit costs (credit)	$	18	$	—	$	15	$	—

	Nine Months Ended September 30,
	2020				2019
	Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits
	(In millions)
Service costs	$	13	$	—	$	13	$	—
Interest costs	30		—		35		1
Expected return on plan assets	—		—		—		(1)
Amortization of net actuarial (gains) losses	30		—		20		—
Amortization of prior service costs (credit)	(2)		—		(2)		—
Allocated to affiliates	(15)		—		(17)		—
Net periodic benefit costs (credit)	$	56	$	—	$	49	$	—