Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

Net Periodic Cost (Benefit)
	Pension Benefits												Other Postretirement Benefits
	Three Months Ended September 30,						Nine months ended September 30,						Three Months Ended September 30,						Nine months ended September 30,
	2019			2018			2019			2018			2019			2018			2019			2018
Service cost	$	1		$	1		$	3		$	3		$	—		$	—		$	—		$	—
Interest cost	40			36			119			107			2			1			6			4
Expected return on plan assets	(57		)	(57		)	(170		)	(172		)	(1		)	(2		)	(3		)	(5		)
Amortization of prior service credit	—			—			—			—			(2		)	(2		)	(5		)	(5		)
Amortization of actuarial loss	11			12			33			37			1			2			4			5
Net periodic cost (benefit)	$	(5	)	$	(8	)	$	(15	)	$	(25	)	$	—		$	(1	)	$	2		$	(1	)