v3.24.0.1
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2023
USD ($)
paymentInstallment
Dec. 31, 2023
USD ($)
segment
customer
paymentInstallment
thirdPartyProcessor
Dec. 31, 2022
USD ($)
customer
thirdPartyProcessor
Dec. 31, 2021
USD ($)
customer
Dec. 31, 2020
USD ($)
Concentration Risk [Line Items]          
Number of reportable segments | segment   2      
Interest earned on customer funds   $ 153,500,000 $ 0 $ 0  
Severance and other related expenses $ 70,200,000 104,000,000      
Advertising costs   360,100,000 544,200,000 435,800,000  
Selling and marketing expenses not directly related to a revenue generating transaction   898,300,000 840,000,000 778,300,000  
Interest income   126,600,000 0 0  
Short-term restricted cash 770,380,000 770,380,000 639,780,000 18,778,000  
Long-term restricted cash 71,812,000 71,812,000 71,600,000 71,702,000  
Reclassification from loans held for sale to loans held for investment   201,900,000      
Net gains on sales of loans   196,100,000 164,300,000 95,500,000  
Consumer receivables reclassified from loans held for investment to loans held for sale and sold to third parties   437,500,000      
Bitcoin for investment purposes, fair value 339,898,000 339,898,000 102,303,000    
Bitcoin for investment purposes, cost 220,000,000 220,000,000      
Increase in retained earnings 18,692,836,000 18,692,836,000 17,251,355,000 3,313,589,000 $ 2,681,569,000
Gain from the remeasurement of bitcoin investment   $ 207,084,000 0 0  
Measurement period for business combinations   1 year      
Intangible assets impairment   $ 0 0 0  
Settlement period for customers payable   1 day      
Retained Earnings          
Concentration Risk [Line Items]          
Increase in retained earnings (528,429,000) $ (528,429,000) (568,712,000) $ (27,965,000) (297,223,000)
Cumulative Effect, Period of Adoption, Adjustment          
Concentration Risk [Line Items]          
Bitcoin for investment purposes, fair value     30,511,000    
Increase in retained earnings     30,511,000   (399,733,000)
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings          
Concentration Risk [Line Items]          
Increase in retained earnings     30,511,000   $ 102,974,000
Variable Interest Entity, Primary Beneficiary          
Concentration Risk [Line Items]          
Restricted cash $ 314,700,000 $ 314,700,000 $ 276,700,000    
Restricted Stock Awards (RSAs) and Restricted Stock Units (RSUs)          
Concentration Risk [Line Items]          
Vesting term   4 years      
Consumer          
Concentration Risk [Line Items]          
Threshold period past due to consider amounts to be uncollectible 180 days 180 days      
Customer Concentration Risk | Net Revenue          
Concentration Risk [Line Items]          
Number of customers | customer   0 0 0  
Credit Concentration Risk | Settlements Receivable          
Concentration Risk [Line Items]          
Number of third party processors | thirdPartyProcessor   2 2    
Third Party Processor One | Credit Concentration Risk | Settlements Receivable          
Concentration Risk [Line Items]          
Concentration risk   46.00% 54.00%    
Third Party Processor Two | Credit Concentration Risk | Settlements Receivable          
Concentration Risk [Line Items]          
Concentration risk   35.00% 31.00%    
Minimum          
Concentration Risk [Line Items]          
Settlements receivable, settlement period   1 day      
Loans held for sale selling period   1 day      
Settlements receivable and payable, settlement period   1 day      
Maximum          
Concentration Risk [Line Items]          
Settlements receivable, settlement period   2 days      
Loans held for sale selling period   2 days      
Settlements receivable and payable, settlement period   2 days      
Subscription and services-based revenue          
Concentration Risk [Line Items]          
Contract with customer, term   1 month      
Subscription and services-based revenue | Afterpay Limited          
Concentration Risk [Line Items]          
Increment payment period   14 days      
Subscription and services-based revenue | Minimum | Afterpay Limited          
Concentration Risk [Line Items]          
Number of payment installments | paymentInstallment 3 3      
Payment period   6 months      
Subscription and services-based revenue | Maximum | Afterpay Limited          
Concentration Risk [Line Items]          
Number of payment installments | paymentInstallment 4 4      
Payment period   12 months      
Hardware revenue | Minimum          
Concentration Risk [Line Items]          
Payment period   30 days      
Hardware revenue | Maximum          
Concentration Risk [Line Items]          
Payment period   90 days