Pension Plans, Postretirement and Other Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

Net periodic pension costs and postretirement benefit costs consist of the following components:

	Three Months Ended June 30,
	Pension												Postretirement
	2018						2017						2018			2017
	US			Foreign			US			Foreign			US			US
	(Millions)
Service cost — benefits earned during the period	$	—		$	2		$	—		$	2		$	—		$	—
Interest cost (a)	2			3			2			3			1			2
Expected return on plan assets (a)	(3		)	(5		)	(3		)	(11		)	—			—
Net amortization:
Actuarial loss (a)	1			2			2			3			3			2
Prior service credit (a)	—			—			—			—			(1		)	(1		)
Net pension and postretirement costs	$	—		$	2		$	1		$	(3	)	$	3		$	3
	Six Months Ended June 30,
	Pension												Postretirement
	2018						2017						2018			2017
	US			Foreign			US			Foreign			US			US
	(Millions)
Service cost — benefits earned during the period	$	—		$	5		$	—		$	4		$	—		$	—
Interest cost (a)	5			6			5			6			3			3
Expected return on plan assets (a)	(7		)	(10		)	(7		)	(15		)	—			—
Settlement loss (a)	—			—			6			—			—			—
Net amortization:
Actuarial loss (a)	2			4			3			5			4			3
Prior service credit (a)	—			—			—			—			(1		)	(1		)
Net pension and postretirement costs	$	—		$	5		$	7		$	—		$	6		$	5

(a) Recorded in other (expense) income.

Amounts Recognized for Pension and Postretirement Benefits in Other Comprehensive Income

Amounts recognized for pension and postretirement benefits in other comprehensive income for the three and six months ended June 30, 2018 and 2017 include the following components:

	Three Months Ended June 30,
	2018									2017
	Before-Tax Amount			Tax Benefit			Net-of-Tax Amount			Before- Tax Amount			Tax Benefit			Net-of-Tax Amount
	(Millions)
Defined benefit pension and postretirement plans:
Amortization of prior service cost included in net periodic pension and postretirement cost	$	(1	)	$	—		$	(1	)	$	(1	)	$	—		$	(1	)
Amortization of actuarial loss included in net periodic pension and postretirement cost	6			(1		)	5			7			(2		)	5
Other comprehensive income (loss) – pension benefits	$	5		$	(1	)	$	4		$	6		$	(2	)	$	4

	Six Months Ended June 30,
	2018									2017
	Before-Tax Amount			Tax Benefit			Net-of-Tax Amount			Before- Tax Amount			Tax Benefit			Net-of-Tax Amount
	(Millions)
Defined benefit pension and postretirement plans:
Amortization of prior service cost included in net periodic pension and postretirement cost	$	(1	)	$	—		$	(1	)	$	(1	)	$	—		$	(1	)
Amortization of actuarial loss included in net periodic pension and postretirement cost	10			(2		)	8			11			(3		)	8
Settlement charge	—			—			—			6			(2		)	4
Other comprehensive income (loss) – pension benefits	$	9		$	(2	)	$	7		$	16		$	(5	)	$	11