Weighted Average Shares Outstanding (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Reconciliation of Basic to Diluted Shares Outstanding

Below is a reconciliation of basic to diluted shares outstanding:

	Three Months Ended June 30,		Six Months Ended June 30,
	2020	2019	2020	2019
Basic	187.7	189.4	187.6	189.9
Dilutive effect of shares issuable under stock-based compensation plans	1.3	1.9	1.7	2.2
Diluted	189.0	191.3	189.3	192.1
Anti-dilutive options to purchase common shares and restricted stock as well as contingently issuable restricted stock which are excluded from the table above	0.3	0.3	0.3	0.3