Earnings Per Share

9 Months Ended

Sep. 30, 2017

A reconciliation of shares for basic and diluted income per share is set forth below (in millions):



	Three months ended September 30,		Nine months ended September 30,
	2017	2016	2017	2016
Average common shares outstanding	126.2	125.4	126.1	125.3
Effect of dilutive securities - share-based compensation	—	1.3	—	1.1
Average shares for diluted computations	126.2	126.7	126.1	126.4

Share options, share appreciation rights, nonvested restricted stock, performance units ("P-Units") and RSUs granted under share-based compensation plans are anti-dilutive and excluded from diluted earnings per share when the hypothetical number of shares that could be repurchased under the treasury stock method exceeds the number of shares that can be exercised, or when the Company reports a net loss from continuing operations. Anti-dilutive shares, which could potentially dilute earnings per share in the future, are set forth below (in millions):



	Three months ended September 30,		Nine months ended September 30,
	2017	2016	2017	2016
Share options and appreciation rights	1.7	1.6	1.7	1.7
Nonvested restricted shares, P-Units and RSUs	4.0	0.7	3.9	1.3
Total potentially dilutive shares	5.7	2.3	5.6	3.0