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Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
[1]
Dec. 31, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Adjustment to retained earnings $ 4,518,680 $ 4,685,593  
Accumulated other comprehensive loss $ (3,036,429) $ (3,746,230)  
Cumulative Effect, Period of Adoption, Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Adjustment to retained earnings     $ 7,200
Accumulated other comprehensive loss     $ 1,800,000
[1] Certain prior period amounts have been recast. See Note 1 - Significant Accounting Policies for more information.