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Calculation Of Net Income Per Share (Tables)
6 Months Ended
Jun. 30, 2024
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 June 30,Six Months Ended June 30,
 2024202320242023
 (In millions)
Weighted-average shares of common stock outstanding98.9103.999.9104.4
Weighted-average potential shares of common stock outstanding:
Unvested RSUs and ESPP0.10.10.1
Shares used to compute diluted earnings per share99.0104.099.9104.5