Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Weighted Average Shares Outstanding Used to Compute Earnings Per Common Share

The weighted average number of shares outstanding used to compute earnings per common share were as follows (in millions):

	2020	2019	2018
Weighted average common shares outstanding for basic computations	280.0	282.0	284.5
Weighted average dilutive effect of equity awards	1.2	1.8	2.3
Weighted average common shares outstanding for diluted computations	281.2	283.8	286.8