REVENUE ADDTIONAL DETAILS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Revenue, Remaining Performance Obligation, Amount	$ 2,200,000,000
Revenue, Remaining Performance Obligation, Percentage	85.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Explanation	36 months
Contract with Customer, Liability, Revenue Recognized	$ 224,000,000	$ 198,000,000	$ 164,000,000