Equity (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

The following tables present changes in the accumulated balances for each component of other comprehensive income (loss) (in millions):

	Changes in Accumulated Other Comprehensive Income (Loss) by Component
	Foreign currency translation adjustments			Comprehensive income from equity method investment			Employee benefit plans adjustments			Total
Balance, as of December 31, 2018	$	(227	)	$	2		$	(90	)	$	(315	)
Other comprehensive income (loss)	(33		)	(1		)	—			(34		)
Income tax benefit (expense)	1			—			—			1
Net current period other comprehensive income (loss)	(32		)	(1		)	—			(33		)
Balance, as of September 30, 2019	$	(259	)	$	1		$	(90	)	$	(348	)

	Changes in Accumulated Other Comprehensive Income (Loss) by Component
	Foreign currency translation adjustments			Comprehensive income from equity method investment		Employee benefit plans adjustments			Total
Balance, as of June 30, 2019	$	(220	)	$	1	$	(90	)	$	(309	)
Other comprehensive income (loss)	(40		)	—		—			(40		)
Income tax benefit (expense)	1			—		—			1
Net current period other comprehensive income (loss)	(39		)	—		—			(39		)
Balance, as of September 30, 2019	$	(259	)	$	1	$	(90	)	$	(348	)

	Changes in Accumulated Other Comprehensive Income (Loss) by Component
	Foreign currency translation adjustments			Comprehensive income from equity method investment		Employee benefit plans adjustments			Total
Balance, as of December 31, 2017	$	(136	)	$	2	$	(89	)	$	(223	)
Other comprehensive income (loss)	(52		)	—		—			(52		)
Income tax benefit (expense)	1			—		—			1
Net current period other comprehensive income (loss)	(51		)	—		—			(51		)
Balance, as of September 30, 2018	$	(187	)	$	2	$	(89	)	$	(274	)

	Changes in Accumulated Other Comprehensive Income (Loss) by Component
	Foreign currency translation adjustments			Comprehensive income from equity method investment		Employee benefit plans adjustments			Total
Balance, as of June 30, 2018	$	(178	)	$	2	$	(89	)	$	(265	)
Other comprehensive income (loss)	(9		)	—		—			(9		)
Income tax benefit (expense)	—			—		—			—
Net current period other comprehensive income (loss)	(9		)	—		—			(9		)
Balance, as of September 30, 2018	$	(187	)	$	2	$	(89	)	$	(274	)