Calculation Of Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2022

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,
	2022	2021	2022	2021
	(In millions)
Weighted-average shares of common stock outstanding	107.1	111.7	108.7	112.4
Weighted-average potential shares of common stock outstanding:
Unvested RSUs and ESPP	—	0.1	—	0.1
Shares used to compute diluted earnings per share	107.1	111.8	108.7	112.5