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Summary Of Significant Accounting Policies (Narrative) (Details)
$ in Thousands
3 Months Ended
Sep. 30, 2021
USD ($)
segment
Jun. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Jun. 30, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]        
Number of operating segments | segment 2      
Adjustment to retained earnings $ 3,026,049 $ 2,885,679 $ 2,678,860 $ 2,497,027
Retained Earnings [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Adjustment to retained earnings $ 3,222,064 $ 3,079,640 2,953,709 $ 2,832,991
Minimum [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Deferred revenue recognized, term 1 year      
Maximum [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Deferred revenue recognized, term 5 years      
Cumulative Effect Of Change In Accounting Standards [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Adjustment to retained earnings     (1,143)  
Cumulative Effect Of Change In Accounting Standards [Member] | Retained Earnings [Member]        
Summary Of Significant Accounting Policies [Line Items]        
Adjustment to retained earnings     $ (1,143)