XML 64 R51.htm IDEA: XBRL DOCUMENT v3.22.4
Fair Value Of Financial Instruments (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Jun. 30, 2022
Derivatives, Fair Value [Line Items]        
Transfers into or out of Level 3   $ 0 $ 0  
Movement in carrying value of assets measured on a recurring basis   0 0  
(Gain) Loss related to fair value adjustment to currency options $ 2,400,000   $ 2,400,000  
Nonrecurring [Member]        
Derivatives, Fair Value [Line Items]        
Liabilities measured at fair value   0    
Cell C [Member]        
Derivatives, Fair Value [Line Items]        
Investment amount owned   $ 0.0   $ 0.0
Equity method investment, percentage of ownership interest   0.00%    
Cell C [Member] | Marketability Discount [Member]        
Derivatives, Fair Value [Line Items]        
Investment fair value measurement inputs   20.00%   10.00%
Cell C [Member] | Minority Discount [Member]        
Derivatives, Fair Value [Line Items]        
Investment fair value measurement inputs   30.00%   15.00%
Cell C [Member] | Shareholding Percentage [Member]        
Derivatives, Fair Value [Line Items]        
Investment fair value measurement inputs   5.00%   15.00%
Cell C [Member] | Class A [Member]        
Derivatives, Fair Value [Line Items]        
Investment shares owned   75,000,000