ACCOUNTS RECEIVABLE RESERVES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Receivables from customers, gross, current	$ 1,200	$ 1,200
Receivables from marketing affiliates, gross, current	110	67
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of year	51	35	$ 21
Provision charged to expense	69	79	46
Write-offs and adjustments	(70)	(62)	(35)
Foreign currency translation adjustments	(1)	(1)	3
Balance, end of year	$ 49	$ 51	$ 35