Pension Plans, Postretirement and Other Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Compensation and Retirement Disclosure [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
	2017						2016						2017			2016
	US			Foreign			US			Foreign			US			US
	(Millions)
Service cost — benefits earned during the period	$	—		$	2		$	—		$	2		$	—		$	—
Interest cost	2			3			5			3			2			2
Expected return on plan assets	(3		)	(11		)	(6		)	(5		)	—			—
Net amortization:
Actuarial loss	2			3			2			2			2			1
Prior service cost (credit)	—			—			—			—			(1		)	—
Net pension and postretirement costs	$	1		$	(3	)	$	1		$	2		$	3		$	3
	Six Months Ended June 30,
	Pension												Postretirement
	2017						2016						2017			2016
	US			Foreign			US			Foreign			US			US
	(Millions)
Service cost — benefits earned during the period	$	—		$	4		$	—		$	4		$	—		$	—
Interest cost	5			6			9			7			3			3
Expected return on plan assets	(7		)	(15		)	(12		)	(10		)	—			—
Settlement loss	6			—			—			—			—			—
Net amortization:
Actuarial loss	3			5			4			4			3			2
Prior service cost (credit)	—			—			—			—			(1		)	—
Net pension and postretirement costs	$	7		$	—		$	1		$	5		$	5		$	5

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, 2017 and 2016 include the following components:

	Three Months Ended June 30,
	2017									2016
	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	)	$	—	$	—		$	—
Amortization of actuarial loss included in net periodic pension and postretirement cost	$	7		$	(2	)	$	5		$	5	$	(2	)	$	3
Other comprehensive income – pension benefits	$	6		$	(2	)	$	4		$	5	$	(2	)	$	3

	Six Months Ended June 30,
	2017									2016
	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	)	$	—	$	—		$	—
Amortization of actuarial loss included in net periodic pension and postretirement cost	11			(3		)	8			10		(3		)	7
Settlement charge	$	6		$	(2	)	$	4		$	—	$	—		$	—
Other comprehensive income – pension benefits	$	16		$	(5	)	$	11		$	10	$	(3	)	$	7