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Earnings Per Share
 12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share (“EPS”)
Accounting policy. The Company computes basic earnings per share using the weighted-average number of unrestricted common and deferred shares outstanding. Diluted earnings per share also includes the dilutive effect of outstanding employee stock options and restricted stock using the treasury stock method and the effect of strategic performance shares.
Basic and diluted earnings per share were computed as follows:
202020192018
(Shares in thousands, dollars in millions, except per share amounts)BasicEffect of
Dilution		DilutedBasicEffect of
Dilution		DilutedBasicEffect of
Dilution		Diluted
Shareholders’ net income$8,458 $8,458 $5,104 $5,104 $2,637 $2,637 
Shares:
Weighted average364,979 364,979 375,919 375,919 246,652 246,652 
Common stock equivalents3,410 3,410 3,898 3,898 3,573 3,573 
Total shares364,979 3,410 368,389 375,919 3,898 379,817 246,652 3,573 250,225 
EPS$23.17 $(0.21)$22.96 $13.58 $(0.14)$13.44 $10.69 $(0.15)$10.54 
The following outstanding employee stock options were not included in the computation of diluted earnings per share because their effect was anti-dilutive.
(In millions)202020192018
Anti-dilutive options4.1 3.5 0.9