Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Narrative (Details)

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INCOME TAXES - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Net income before income tax $ 235,938 $ 363,693 $ 151,805
Effective income tax rate (in percent) (18.10%) (10.60%) (15.40%)
Undistributed earnings of foreign subsidiaries $ 467,456    
Tax losses carryforward $ 1,548 $ 679  
US      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 21.00% 21.00%  
Russia      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 20.00% 20.00%  
Azerbaijan      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 20.00% 20.00%  
Kyrgyzstan      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 10.00% 10.00%  
Germany      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 31.00% 31.00%  
Cyprus      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 12.50% 12.50%  
Tax losses carryforward $ 12,384 $ 5,432  
Ukraine      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 18.00% 18.00%  
United Kingdom      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 25.00% 25.00%  
Armenia      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 18.00% 18.00%  
Uzbekistan      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Income tax rates used for deferred tax assets and liabilities (in percent) 15.00% 15.00%