Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

Our weighted-average shares outstanding for the years ended December 31, 2019, 2018 and 2017 was as follows:

(in millions)	2019	2018	2017
Weighted-average number of shares of common stock outstanding - basic	99.5	104.8	108.1
Stock options	0.5	1.0	1.3
Restricted stock units	1.0	1.2	1.5
Adjusted weighted-average shares and assumed conversions - diluted	101.0	107.0	110.9