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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating Loss Carryforwards [Line Items]          
Tax benefit   $ 8,019 $ 12,312 $ 1,364  
Increase (decrease) in valuation allowance   (98,900) 213,300    
Unrecognized tax benefits   465,103 506,512 448,392 $ 295,182
Unrecognized tax benefit that would impact annual effective tax rate   80,200      
Total accrued interest and penalties related to uncertain tax positions   22,100 $ 9,100 $ 7,800  
Undistributed earnings of non-U.S. subsidiaries   113,200      
Afterpay Limited          
Operating Loss Carryforwards [Line Items]          
Tax benefit $ 29,100        
Federal          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   2,400,000      
Federal | Research Tax Credit Carryforward          
Operating Loss Carryforwards [Line Items]          
Tax credit carryforward   377,600      
State          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   4,600,000      
State | Research Tax Credit Carryforward          
Operating Loss Carryforwards [Line Items]          
Tax credit carryforward   264,700      
Foreign          
Operating Loss Carryforwards [Line Items]          
Net operating loss carryforwards   1,600,000      
Foreign | Research Tax Credit Carryforward          
Operating Loss Carryforwards [Line Items]          
Tax credit carryforward   57,500      
Maximum | Tax examinations or lapse of applicable statute of limitations          
Operating Loss Carryforwards [Line Items]          
Reasonably possible decrease in unrecognized tax benefits   $ 17,600