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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Number of Weighted Average Shares The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
(In thousands)
Weighted average shares:
Basic shares231,171 229,576 230,811 229,254 
Equity-based compensation plans1,829 1,884 1,901 1,650 
Diluted shares233,000 231,460 232,712 230,904