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Shareholders' Equity (Schedule Of Shares Reserved For Future Issuance) (Details)
Oct. 01, 2022
shares
Share-based Compensation Arrangement by Share-based Payment Award  
Class A shares and Class B shares reserved for issuance 11,724,871
Conversion of Class B to Class A shares  
Share-based Compensation Arrangement by Share-based Payment Award  
Class A shares and Class B shares reserved for issuance 7,472,878
Employee Stock Purchase Plan  
Share-based Compensation Arrangement by Share-based Payment Award  
Class A shares and Class B shares reserved for issuance 1,466,247
2014 Long Term Incentive Plan  
Share-based Compensation Arrangement by Share-based Payment Award  
Class A shares and Class B shares reserved for issuance 1,701,956
2008 Stock Appreciation Rights Plan  
Share-based Compensation Arrangement by Share-based Payment Award  
Class A shares and Class B shares reserved for issuance 1,083,790