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(LOSS) EARNINGS PER COMMON SHARE (Tables)

3 Months Ended

Mar. 31, 2022

Computation of Basic and Diluted Earnings (Loss) Per Share

The following table shows the effect of stock-based awards on the weighted average number of shares outstanding used in calculating diluted earnings per share:


In millions of shares
	Three Months Ended March 31,
		2022	2021
Weighted average common shares outstanding - basic		92.0	91.6
Incremental shares outstanding related to stock-based awards (1)		—	0.4
Weighted average common shares outstanding - diluted		92.0	92.0

(1) In periods of net loss, stock-based awards are anti-dilutive and therefore excluded from the (loss) earnings per share calculation.

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Anti-dilutive stock-based awards excluded from the computation of diluted earnings (loss) per share using the treasury stock method includes the following:


In thousands of shares
	Three Months Ended March 31,
		2022	2021
Option awards		1,456	2,372
RSU awards		122	30