GOODWILL, INTANGIBLE ASSETS AND OTHER LONG-LIVED ASSETS - Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-lived intangible assets
Gross Carrying Amount	$ 3,180	$ 3,123
Accumulated Amortization	(1,368)	(1,169)
Net Carrying Amount	1,812	1,954
Supply and distribution agreements
Finite-lived intangible assets
Gross Carrying Amount	1,136	1,100
Accumulated Amortization	(552)	(472)
Net Carrying Amount	$ 584	628
Supply and distribution agreements | Minimum
Finite-lived intangible assets
Amortization Period	3 years
Supply and distribution agreements | Maximum
Finite-lived intangible assets
Amortization Period	20 years
Technology
Finite-lived intangible assets
Gross Carrying Amount	$ 174	170
Accumulated Amortization	(144)	(129)
Net Carrying Amount	$ 30	41
Technology | Minimum
Finite-lived intangible assets
Amortization Period	2 years
Technology | Maximum
Finite-lived intangible assets
Amortization Period	7 years
Internet domain names
Finite-lived intangible assets
Gross Carrying Amount	$ 44	40
Accumulated Amortization	(37)	(32)
Net Carrying Amount	$ 7	8
Internet domain names | Minimum
Finite-lived intangible assets
Amortization Period	5 years
Internet domain names | Maximum
Finite-lived intangible assets
Amortization Period	20 years
Trade names
Finite-lived intangible assets
Gross Carrying Amount	$ 1,824	1,811
Accumulated Amortization	(633)	(534)
Net Carrying Amount	$ 1,191	1,277
Trade names | Minimum
Finite-lived intangible assets
Amortization Period	4 years
Trade names | Maximum
Finite-lived intangible assets
Amortization Period	20 years
Other intangible assets
Finite-lived intangible assets
Gross Carrying Amount	$ 2	2
Accumulated Amortization	(2)	(2)
Net Carrying Amount	$ 0	$ 0
Other intangible assets | Maximum
Finite-lived intangible assets
Amortization Period	15 years