INCOME TAXES (Provision for (benefit from) income taxes) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal			$ (46,000,000)	$ 3,000,000	$ (164,000,000)
State			(1,000,000)	10,000,000	(17,000,000)
Foreign			1,445,000,000	1,426,000,000	352,000,000
Total current			1,398,000,000	1,439,000,000	171,000,000
Deferred income taxes:
Federal			106,000,000	(64,000,000)	(137,000,000)
State			8,000,000	(10,000,000)	(41,000,000)
Foreign			102,000,000	(89,000,000)	451,000,000
Total deferred			216,000,000	(163,000,000)	273,000,000
Adjustments			(504,000,000)	(393,000,000)	(13,000,000)
Operating loss carryforwards			(119,000,000)	0	(60,000,000)
Provision for income taxes			991,000,000	883,000,000	371,000,000
Tax Cuts and Jobs Act of 2017, provisional income tax expense (benefit)			(123,000,000)	(393,000,000)	0
Change in PT-FI tax rates			504,000,000	0	$ 0
Tax Cuts and Jobs Act of 2017, deferred tax assets, existing income tax expense (benefit)	$ 32,000,000	$ 975,000,000	123,000,000	(272,000,000)
Tax Cuts and Jobs Act of 2017, change in tax rate, provisional income tax expense (benefit)	$ 0	$ (121,000,000)		(121,000,000)
Minimum Tax Credit Carryforwards [Member]
Deferred income taxes:
Federal Income Tax Expense (Benefit), Continuing Operations			76,000,000	$ 438,000,000
Foreign Income Tax Expense (Benefit), Continuing Operations			47,000,000
Tax Authority, In Papau, Indonesia
Deferred income taxes:
Change in PT-FI tax rates			$ 504,000,000