Earnings per Common Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Calculation of Basic and Diluted Weighted-Average Shares Outstanding

The following is a calculation of basic and diluted weighted-average shares outstanding:

	Year Ended December 31,
(In thousands)	2020	2019	2018
Weighted-average shares - basic	398,521	415,514	445,538
Dilution effect of stock awards at end of period	2,001	1,937	2,030
Weighted-average shares - diluted	400,522	417,451	447,568

Calculation of Weighted-Average Shares Excluded from Diluted EPS Due to Anti-Dilutive Effect

The following is a calculation of weighted-average shares excluded from diluted EPS due to the anti-dilutive effect:

	Year Ended December 31,
(In thousands)	2020	2019	2018
Weighted-average stock awards excluded from diluted EPS due to the anti-dilutive effect calculated using the treasury stock method	2	669	3