SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash and Cash Equivalents [Line Items]
Restricted cash	$ 539,000,000		$ 290,000,000
Allowance for credit loss	0		0
Inventory write-downs and losses on firm purchase commitments	188,000,000	$ 0
Inventory, raw materials, net of reserves	344,000,000		236,000,000
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, fair value disclosure	16,432,000,000		18,133,000,000
Money market funds | Fair Value, Inputs, Level 1 | Fair Value, Recurring
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, fair value disclosure	$ 10,324,000,000		11,827,000,000
Money market funds | Fair Value, Inputs, Level 1 | Fair Value, Recurring | Revision of Prior Period, Adjustment
Cash and Cash Equivalents [Line Items]
Cash and cash equivalents, fair value disclosure			$ (1,221,000,000)