SUPPLEMENTAL FINANCIAL INFORMATION - Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period	$ 122	$ 125
Charged to costs and expenses	6	1
Write-offs	(1)	0
Currency translation adjustments	2	(6)
Balance at end of period	$ 129	$ 120