RETIREMENT AND POSTRETIREMENT BENEFIT PLANS - OBLIGATIONS AND FUNDED STATUS (Details) - USD ($) $ in Millions		12 Months Ended
	Aug. 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Amounts recognized in the consolidated balance sheet:
Deferred credits and other liabilities — pension and postretirement obligations		$ (809)	$ (1,005)
Changes in plan assets:
Plan amendments	$ (178)
Pension Benefits
Amounts recognized in the consolidated balance sheet:
Other assets		60	82
Accrued liabilities		(25)	(5)
Deferred credits and other liabilities — pension and postretirement obligations		(46)	(65)
Total amount recognized in consolidated balance sheet		(11)	12
Accumulated other comprehensive loss included the following after-tax balances:
Net loss		91	59
Prior service cost		0	0
AOCI after-tax balances		91	59
Changes in the benefit obligation:
Benefit obligation — beginning of year		391	399
Service cost — benefits earned during the period		5	6	$ 7
Interest cost on projected benefit obligation		15	17	18
Actuarial (gain) loss		(19)	14
Foreign currency exchange rate gain		(3)	0
Liability gain due to curtailment		0	(2)
Special termination benefits		0	1
Benefits paid		(40)	(44)
Settlements		0	0
Benefit obligation — end of year		349	391	399
Changes in plan assets:
Fair value of plan assets — beginning of year		403	386
Actual return on plan assets		(33)	52
Foreign currency exchange rate loss		0	0
Employer contributions		8	9
Benefits paid		(40)	(44)
Settlements		0	0
Plan amendments		0	0
Fair value of plan assets — end of year		338	403	386
Funded/(Unfunded) status:		(11)	12
Accumulated Benefit Obligation in Excess of Plan Assets
Projected Benefit Obligation		173	161
Accumulated Benefit Obligation		169	157
Fair Value of Plan Assets		98	91
Plan Assets in Excess of Accumulated Benefit Obligation
Projected Benefit Obligation		176	230
Accumulated Benefit Obligation		176	230
Fair Value of Plan Assets		240	312
Postretirement Benefits
Amounts recognized in the consolidated balance sheet:
Other assets		0	0
Accrued liabilities		(45)	(59)
Deferred credits and other liabilities — pension and postretirement obligations		(763)	(940)
Total amount recognized in consolidated balance sheet		(808)	(999)
Accumulated other comprehensive loss included the following after-tax balances:
Net loss		151	192
Prior service cost		(72)	1
AOCI after-tax balances		79	193
Changes in the benefit obligation:
Benefit obligation — beginning of year		999	950
Service cost — benefits earned during the period		23	21	20
Interest cost on projected benefit obligation		34	38	39
Actuarial (gain) loss		(90)	61
Foreign currency exchange rate gain		0	0
Liability gain due to curtailment		0	(9)
Special termination benefits		0	0
Benefits paid		(57)	(62)
Settlements		0	0
Benefit obligation — end of year		808	999	950
Changes in plan assets:
Fair value of plan assets — beginning of year		0	0
Actual return on plan assets		0	0
Foreign currency exchange rate loss		0	0
Employer contributions		0	0
Benefits paid		0	0
Settlements		0	0
Plan amendments		(101)	0
Fair value of plan assets — end of year		0	0	$ 0
Funded/(Unfunded) status:		$ (808)	$ (999)