Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Changes in Accumulated Other Comprehensive Loss by Component

	Three months ended
	Pension and OPEB liability adjustment			Available- for-sale securities and interest rate swaps			Foreign currency items			Total
AOCL as of June 30, 2018	$	3		$	(2	)	$	(28	)	$	(27	)
Other comprehensive income before reclassifications		—			4			—			4
Amounts reclassified from AOCL		(3	)		—			—			(3	)
Income tax		—			—			—			—
Net current period other comprehensive (loss) income	$	(3	)	$	4		$	—		$	1
AOCL as of September 30, 2018	$	—		$	2		$	(28	)	$	(26	)
AOCL as of June 30, 2019	$	12		$	(28	)	$	(31	)	$	(47	)
Other comprehensive loss before reclassifications		—			(7	)		(6	)		(13	)
Amounts reclassified from AOCL		(3	)		—			—			(3	)
Income tax		1			2			—			3
Net current period other comprehensive loss	$	(2	)	$	(5	)	$	(6	)	$	(13	)
AOCL as of September 30, 2019	$	10		$	(33	)	$	(37	)	$	(60	)

	Nine months ended
	Pension and OPEB liability adjustment			Available- for-sale securities and interest rate swaps			Foreign currency items			Total
AOCL as of December 31, 2017	$	8		$	—		$	(23	)	$	(15	)
Other comprehensive income (loss) before reclassifications		—			2			(5	)		(3	)
Amounts reclassified from AOCL		(10	)		—			—			(10	)
Income tax		2			—			—			2
Net current period other comprehensive (loss) income	$	(8	)	$	2		$	(5	)	$	(11	)
AOCL as of September 30, 2018	$	—		$	2		$	(28	)	$	(26	)
AOCL as of December 31, 2018	$	9		$	(7	)	$	(32	)	$	(30	)
Other comprehensive loss before reclassifications		—			(32	)		(5	)		(37	)
Amounts reclassified from AOCL		(10	)		—			—			(10	)
Income tax		3			7			—			10
Reclassification of stranded tax effects		8			(1	)		—			7
Net current period other comprehensive income (loss)	$	1		$	(26	)	$	(5	)	$	(30	)
AOCL as of September 30, 2019	$	10		$	(33	)	$	(37	)	$	(60	)

	Amounts reclassified from AOCL
AOCL Components	Three months ended September 30, 2019			Three months ended September 30, 2018		Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of benefit items:
Prior service cost	$	3		$	3	Other income, net
Total reclassifications, before tax	$	3		$	3	Income before income taxes
Income tax expense		(1	)		—	Income tax expense
Total reclassifications	$	2		$	3	Net of tax

	Amounts reclassified from AOCL
AOCL Components	Nine months ended September 30, 2019			Nine months ended September 30, 2018			Affected line item in the Condensed Consolidated Statements of Comprehensive Income
Amortization of benefit items:
Prior service cost	$	10		$	10		Other income, net
Total reclassifications, before tax	$	10		$	10		Income before income taxes
Income tax expense		(3	)		(2	)	Income tax expense
Total reclassifications	$	7		$	8		Net of tax