EMPLOYEE BENEFIT PLANS (Fair Value Measurements of Plan Assets By Level) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Level 3
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	$ 28	$ 28	$ 27
Level 3 | Real Estate
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	23	22	21
Level 3 | Private Equity
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	5	6	6
Pension Benefits
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	446	376	$ 403
Pension Benefits | Cash Equivalents
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	2	1
Pension Benefits | United States Large Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	55	45
Pension Benefits | United States Small Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	21	17
Pension Benefits | Non-United States
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	80	67
Pension Benefits | Global
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	51	42
Pension Benefits | Fixed Income
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	199	167
Pension Benefits | Real Estate
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	33	31
Pension Benefits | Private Equity
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	5	6
Pension Benefits | Level 1
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	2	1
Pension Benefits | Level 1 | Cash Equivalents
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	2	1
Pension Benefits | Level 1 | United States Large Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | United States Small Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | Non-United States
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | Global
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | Fixed Income
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | Real Estate
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 1 | Private Equity
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 2
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	416	347
Pension Benefits | Level 2 | Cash Equivalents
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 2 | United States Large Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	55	45
Pension Benefits | Level 2 | United States Small Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	21	17
Pension Benefits | Level 2 | Non-United States
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	80	67
Pension Benefits | Level 2 | Global
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	51	42
Pension Benefits | Level 2 | Fixed Income
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	199	167
Pension Benefits | Level 2 | Real Estate
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	10	9
Pension Benefits | Level 2 | Private Equity
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	28	28
Pension Benefits | Level 3 | Cash Equivalents
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | United States Large Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | United States Small Cap
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | Non-United States
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | Global
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | Fixed Income
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	0	0
Pension Benefits | Level 3 | Real Estate
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	23	22
Pension Benefits | Level 3 | Private Equity
Pension And Other Employee Benefit Plans [Line Items]
Fair value measurements of plan assets	$ 5	$ 6