Other Financial Data - Other Income (Expense) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest expense, net:
Interest expense	$ (237,000,000)	$ (240,000,000)	$ (215,000,000)
Interest income	17,000,000	18,000,000	14,000,000
Interest expense, net:	(220,000,000)	(222,000,000)	(201,000,000)
Other:
Net periodic pension and postretirement benefit (Note 8)	78,000,000	75,000,000	46,000,000
Pension settlement (Note 8)	(359,000,000)	0	(48,000,000)
(Losses) gain from the extinguishment of long-term debt (Note 5)	(50,000,000)	0	0
Investment impairments	(18,000,000)	(5,000,000)	0
Foreign currency loss	(22,000,000)	(24,000,000)	(31,000,000)
Gain (loss) on derivative instruments	(8,000,000)	(14,000,000)	15,000,000
Gains on equity method investments	3,000,000	1,000,000	1,000,000
Fair value adjustments to equity investments	(3,000,000)	11,000,000	0
Other	10,000,000	3,000,000	7,000,000
Total other	(365,000,000)	53,000,000	(10,000,000)
Convertible Debt
Other:
(Losses) gain from the extinguishment of long-term debt (Note 5)	4,000,000	6,000,000	0
Non U.S.
Other:
Pension settlement (Note 8)	0	0	(48,000,000)
U.S.
Other:
Pension settlement (Note 8)	$ (359,000,000)	$ 0	$ 0