INCOME TAXES - Principal Reasons for Differences and Related Tax Effects where Income Tax Expense Varies from Amount Computed by Applying Expected United States Tax Rate to Pretax Earnings (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income taxes based on U.S. statutory rates									$ 836	$ 1,406	$ 1,424
Foreign rate differential									220	0	0
Write-down of U.S. deferred tax liabilities for tax reform change									0	(1,933)	0
Utilization of foreign tax credit									(3)	(27)	(30)
Nondeductible expenses									21	10	8
Other, net									(11)	(42)	6
Total income tax expense	$ 197	$ 301	$ 299	$ 265	$ (1,585)	$ 359	$ 332	$ 306	$ 1,063	$ (586)	$ 1,408