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Earnings or loss per share
12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings per share Earnings per share
The following table presents the reconciliation of basic and diluted earnings per share for the years ended December 31, 2022, 2021 and 2020:
(in millions, except per share data)
Year ended December 31, 2022
Year ended December 31, 2021
Year ended December 31, 2020
Earnings (numerator)Weighted average shares outstanding (denominator)Earnings per shareEarnings (numerator)Weighted average shares outstanding (denominator)Earnings per shareEarnings (numerator)Weighted average shares outstanding (denominator)Earnings per share
Basic$662.3 650.9 $1.02 $508.0 590.5 $0.86 $52.0 576.3 $0.09 
Dilutive effect of stock-based awards— 5.6 — 9.1 — 7.1 
Dilutive impact of MCPS24.2 22.9 — — — — 
Diluted$686.5 679.4 $1.01 $508.0 599.6 $0.85 $52.0 583.4 $0.09 
For the year ended December 31, 2021 and 2020, diluted earnings per share included accumulation of yield on preferred stock of $64.6 million, and excluded 62.9 million of common stock equivalents under the MCPS because they were anti-dilutive to the calculation.