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INFORMATION ABOUT COMPONENTS OF CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - Borrowings, corporate bonds (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Apr. 04, 2019
Issuance of public corporate bonds    
Borrowings:    
Amount approved for issuance $ 80.0  
Outstanding amount $ 22.6  
Issuance of private corporate bonds    
Borrowings:    
Notional amount   $ 16.0