ACCUMULATED OTHER COMPREHENSIVE LOSS - Items Included in Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Beginning balance			$ (1,152)
Translation adjustments	$ 11	$ (16)	25	$ (31)
Total other comprehensive income	39	183	397	221
Reclassification of certain effects due to tax law changes				253
Reclassification of accumulated unrealized gains on available-for-sale securities				9
Ending balance	(755)	(1,603)	(755)	(1,603)
Pension
Beginning balance	(1,000)	(2,002)	(1,343)	(1,810)
Other comprehensive income (loss) before reclassifications	10	158	(14)	166
Amounts reclassified from accumulated other comprehensive loss to earnings	18	41	385	87
Total other comprehensive income	28	199	371	253
Reclassification of certain effects due to tax law changes	0	0	0	(246)
Ending balance	(972)	(1,803)	(972)	(1,803)
Other Postretirement Benefits
Beginning balance	(18)	(33)	(19)	(25)
Amounts reclassified from accumulated other comprehensive loss to earnings	0	0	1	(1)
Total other comprehensive income	0	0	1	(1)
Reclassification of certain effects due to tax law changes	0	0	0	(7)
Ending balance	(18)	(33)	(18)	(33)
Translation Adjustment And Other
Beginning balance	224	249	210	273
Translation adjustments	11	(16)	25	(31)
Total other comprehensive income	11	(16)	25	(31)
Reclassification of accumulated unrealized gains on available-for-sale securities	0	0	0	(9)
Ending balance	$ 235	$ 233	$ 235	$ 233