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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Earnings Per Share, Basic and Diluted
The following table presents the calculation of net income available to common shareholders and basic and diluted EPS. For the periods presented in the table below, diluted EPS calculated under the two-class method was more dilutive.

Millions of Dollars
(except per share amounts)
Three Months Ended
June 30
Six Months Ended
June 30
2023202220232022
Basic earnings per share
Net Income$2,232 5,1455,15210,904
Less: Dividends and undistributed earnings
allocated to participating securities8171733
Net Income available to common shareholders$2,224 5,1285,13510,871
Average common shares outstanding (in Millions)1,2071,2901,2141,296
Net Income Per Share of Common Stock$1.84 3.984.238.39
Diluted earnings per share
Net Income available to common shareholders$2,224 5,1285,13510,871
Average common shares outstanding (in Millions)1,2071,2901,2141,296
Add: Dilutive impact of options and unvested
non-participating RSU/PSUs (in Millions)3635
Average diluted shares outstanding (in Millions)1,2101,2961,2171,301
Net Income Per Share of Common Stock$1.84 3.964.228.36