| SHORT-TERM BORROWINGS AND LONG-TERM DEBT - Senior Notes Issuance (Details) - Senior Notes | Apr. 30, 2020  USD ($) | 
|---|---|
| Line of Credit Facility [Line Items] | |
| Aggregate Principal | $ 3,000,000,000 | 
| notes, due 2022 | |
| Line of Credit Facility [Line Items] | |
| Interest Rate | 2.05% | 
| Aggregate Principal | $ 1,000,000,000 | 
| Effective Annual Interest Rate | 2.277% | 
| notes, due 2025 | |
| Line of Credit Facility [Line Items] | |
| Interest Rate | 2.40% | 
| Aggregate Principal | $ 750,000,000 | 
| Effective Annual Interest Rate | 2.603% | 
| notes, due 2027 | |
| Line of Credit Facility [Line Items] | |
| Interest Rate | 2.80% | 
| Aggregate Principal | $ 500,000,000 | 
| Effective Annual Interest Rate | 2.953% | 
| notes, due 2030 | |
| Line of Credit Facility [Line Items] | |
| Interest Rate | 2.95% | 
| Aggregate Principal | $ 750,000,000 | 
| Effective Annual Interest Rate | 3.071% | 
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