Shares Used In Computing Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2011

Shares Used In Computing Net Income Per Share [Abstract]

Schedule Of Earnings Per Share Basic and Diluted

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions)	2011		2010		2011		2010
Weighted-average shares outstanding used for the calculation of net income per share—basic		141.1		149.7		143.2		151.2
Common stock equivalents		1.5		1.2		1.6		1.2
Total shares used for the calculation of net income per share—diluted		142.6		150.9		144.8		152.4