SUPPLEMENTAL FINANCIAL INFORMATION - Other (Income) Expense, net (Detail) - USD ($) $ in Millions	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income, net
Foreign exchange losses (gains), net								$ 37	$ (14)	$ 63
Gain on sale of investments								(1)	(3)	(3)
Saudi Arabia joint venture gain								0	(24)	0
Venezuela deconsolidation								0	0	33
Pension settlement charges								755	1	2
Pension and other postretirement benefit plans								(53)	(49)	31
Other, net								(7)	11	7
Other (income) expense, net	$ 4	$ (21)	$ (33)	$ (38)	$ (6)	$ (17)	$ (44)	$ 731	$ (78)	$ 133