
	2022		2021		2020
	(In thousands, except per share amounts)
Net income	$	854,800	$	975,322	$	588,913
Basic weighted-average number of shares outstanding	127,666		129,768		130,289
Assumed conversion of dilutive stock options and awards	351		527		582
Diluted weighted-average number of shares outstanding	128,017		130,295		130,871
Basic earnings per share	$	6.70	$	7.52	$	4.52
Diluted earnings per share	$	6.68	$	7.49	$	4.50

The Company's calculation of weighted-average shares includes the common stock of the Company as well as the exchangeable shares. Exchangeable shares are the equivalent of common shares in all material respects. All classes of stock have in effect the same rights and share equally in undistributed net income. For 2022, 2021, and 2020, 43.5 thousand, 36.0 thousand, and 30.8 thousand stock options and awards, respectively, were anti-dilutive to earnings per share and therefore have been excluded from the computation of diluted earnings per share.

On January 31, 2019, the Company's board of directors approved a stock repurchase program for up to $500.0 million of the Company's common shares. On December 1, 2020, it approved an increase in the remaining authorization from $263.6 million to $500.0 million, and on October 1, 2021, it approved an increase in the remaining authorization from $141.2 million to $641.2 million. During the first quarter of 2022, the Company completed the remaining stock repurchases under this program.

On March 23, 2022, the Company's board of directors approved a stock repurchase program for up to $1.0 billion of the Company's common shares on the open market or in privately negotiated transactions. The repurchase plan has no time limit and does not require the repurchase of a minimum number of shares. Common shares repurchased on the open market are at prevailing market prices, including under plans complying with the provisions of Rule 10b5-1 and Rule 10b-18 of the Securities Exchange Act of 1934. The timing and actual number of common shares to be repurchased will depend upon market conditions, eligibility to trade, and other factors, in accordance with Securities and Exchange Commission requirements. The authorized value of shares available to be repurchased under this program excludes the cost of commissions and excise taxes and as of January 29, 2023, the remaining authorized value was $743.8 million.

During 2022, 2021, and 2020, 1.4 million, 2.2 million, and 0.4 million shares, respectively, were repurchased under the programs at a total cost including commissions and excise taxes of $444.0 million, $812.6 million, and $63.7 million, respectively.