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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2022
Earnings Per Share [Abstract]  
Reconciliation of the Earnings and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share
The table below presents the reconciliation of the earnings and number of shares used in our calculations of basic and diluted earnings per share:
Three Months Ended
(in millions, except per share amounts)March 31, 2022March 31, 2021
Computation of Basic Earnings Per Share
Net income (loss)$377 $(11)
Shares for basic earnings per share328.3 326.7 
Basic earnings (loss) per share$1.15 $(0.03)
Computation of Diluted Earnings Per Share
Net income (loss)$377 $(11)
Shares for basic earnings per share328.3 326.7 
Effect of dilutive securities
Stock-based compensation (1)
1.7 — 
Shares for diluted earnings per share330.0 326.7 
Diluted earnings (loss) per share$1.14 $(0.03)
(1) For the calculation of diluted loss per share for the three months ended March 31, 2021, we excluded stock-based compensation securities of 2.3 million because the effect was anti-dilutive.