v3.22.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($)
$ in Millions
 1 Months Ended 12 Months Ended
Oct. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Mar. 28, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Restricted cash   $ 290 $ 32    
Inventory (Note 2)   274 0    
Write-down of inventory   95 0 $ 0  
Revenues   55 0 0  
Shares donated (in shares) 8,000,000        
Cash donation $ 20        
Other expenses (Note 2)   663 0 $ 0  
Money Market Funds | Fair Value, Inputs, Level 1 | Fair Value, Recurring          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Money market funds   $ 13,048 $ 2,782    
Cash, Debt Requirements | Subsequent Event          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Restricted cash         $ 250