Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Computations of Weighted Average Shares Outstanding

The computations of the weighted average shares outstanding for the years ended December 31, are as follows (in millions):

	2019	2018	2017
Weighted-average shares outstanding	423.2	473.3	485.7
Share-based payment awards classified as participating securities	0.1	0.4	1.0
Basic weighted-average shares outstanding	423.3	473.7	486.7
Dilutive securities (1)	0.6	—	1.3
Diluted weighted-average shares outstanding	423.9	473.7	488.0

(1)

For 2018, 0.6 million potentially dilutive share-based awards are excluded as their effect would be anti-dilutive. For 2017, the amount of potentially dilutive securities that are excluded because their effect would be anti-dilutive are not material.