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Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2022
12. Earnings Per Share
Computation of basic and diluted earnings per share	The following table reconciles the computation of basic and diluted earnings per share: For the Year ended December 31 millions of dollars (except per share amounts) 2022 2021 Numerator Net income attributable to common shareholders $ 945.1 $ 510.5 Diluted numerator 945.1 510.5 Denominator Weighted average shares of common stock outstanding  265.5 255.9 Weighted average deferred share units outstanding  (1) - 1.3 Weighted average shares of common stock outstanding – basic 265.5 257.2 Stock-based compensation  0.4 0.4 Weighted average shares of common stock outstanding – diluted 265.9  257.6 Earnings per common share Basic  $ 3.56 $ 1.98 Diluted $ 3.55 $ 1.98 (1) Effective February 10, 2022, deferred share units are no longer able to be settled in shares and are therefore no longer included in the calculation of earnings per common share.

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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