XML 80 R61.htm IDEA: XBRL DOCUMENT v3.22.1
FAIR VALUE MEASUREMENT OF FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($)
shares in Millions, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended
Sep. 30, 2021
Mar. 31, 2022
Mar. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Gain (loss) resulting from the change in the fair value of investments   $ 16.7 $ 64.5
Geothermal Investments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Equity and debt securities $ 2.7 $ 16.9 $ 16.9
ADNOC Drilling      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Payments to acquire investments $ 100.0    
Investment balance (in shares) 159.7    
Ownership percentage 1.00%    
Investments lockup period 3 years