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Calculation Of Net Income Per Share (Tables)
9 Months Ended
Sep. 30, 2023
Earnings Per Share [Abstract]  
Schedule of Weighted Average Number of Shares [Table Text Block]
The following table presents the computation of weighted-average shares used in the calculation of basic and diluted earnings per share:
 Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
 (In millions)
Weighted-average shares of common stock outstanding102.9107.1103.9108.7
Weighted-average potential shares of common stock outstanding:
Unvested RSUs and ESPP0.10.1
Shares used to compute diluted earnings per share103.0107.1104.0108.7