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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2021
Earnings Per Share [Abstract]  
Computation Of Diluted Average Common Shares The computation of diluted average common shares is as follows:
Three Months Ended
March 31,
(in thousands)20212020
Basic average common shares outstanding392,657 383,062 
Dilutive potential common shares:
Shares contingently issuable under employee stock plans630 845 
Shares restricted under employee stock plans288 207 
Forward Agreement337 — 
Diluted Average Common Shares393,912 384,114