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BASIS OF PRESENTATION (Details)
$ in Millions, € in Billions
1 Months Ended 2 Months Ended 6 Months Ended
Aug. 03, 2021
USD ($)
Jun. 30, 2021
USD ($)
Apr. 30, 2021
USD ($)
Mar. 31, 2021
EUR (€)
Aug. 03, 2021
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
investment
Organization, Consolidation And Presentation Of Financial Statements [Line Items]                
Number of Investments Impaired | investment               1
Proceeds from the issuance of long-term debt           $ 2,015 $ 4,108  
COVID-19                
Organization, Consolidation And Presentation Of Financial Statements [Line Items]                
Government Grant and other assistance benefit that was returned, cash paid   $ 86            
COVID-19 | Subsequent Event                
Organization, Consolidation And Presentation Of Financial Statements [Line Items]                
Government Grant and other assistance benefit that was returned, cash paid $ 19       $ 105      
Senior Notes                
Organization, Consolidation And Presentation Of Financial Statements [Line Items]                
Proceeds from the issuance of long-term debt | €       € 1.7        
Payments to redeem debt     $ 2,000