
	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2025		2024		2025		2024
Net income (in millions)	$	226	$	194	$	395	$	347
Shares (in thousands):
Weighted average common shares outstanding	243,370		242,538		243,227		242,182
Add: Participating securities (a)	27		34		24		31
Weighted average common shares outstanding — Basic	243,397		242,572		243,251		242,213
Plus incremental shares from assumed conversions: (b)
Dilutive effect of stock options	314		576		333		651
Dilutive effect of restricted stock units and performance share units	148		390		236		415
Weighted average common shares outstanding — Diluted	243,859		243,538		243,820		243,279
Basic earnings per share	$	0.93	$	0.80	$	1.62	$	1.43
Diluted earnings per share	$	0.93	$	0.80	$	1.62	$	1.43

(a)Restricted stock units containing rights to non-forfeitable dividends that participate in undistributed earnings with common stockholders are considered participating securities for purposes of computing earnings per share.

(b)Incremental shares from stock options, restricted stock units and performance share units are computed by the treasury stock method. The weighted average shares listed below were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive for the periods presented or were otherwise excluded under the treasury stock method. The treasury stock method calculates dilution assuming the exercise of all in-the-money options and vesting of restricted stock units and performance share units, reduced by the repurchase of shares with the proceeds from the assumed exercises and unrecognized compensation expense for outstanding awards. Performance share units will be included in the treasury stock calculation of diluted earnings per share upon achievement of underlying performance or market conditions at the end of the reporting period. See Note 15, "Share-Based Compensation Plans," to the condensed consolidated financial statements for further detail on the performance share units.