Earnings Per Share (EPS) (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Basic and Diluted Shares

The following table summarizes the weighted-average number of ordinary shares outstanding for basic and diluted earnings per share calculations for the three and nine months ended September 30:

	Three months ended				Nine months ended
In millions, except per share amounts	2019		2018		2019		2018
Weighted-average number of basic shares	241.7		246.4		242.1		248.1
Shares issuable under incentive stock plans	2.9		3.1		2.7		2.8
Weighted-average number of diluted shares	244.6		249.5		244.8		250.9
Anti-dilutive shares	—		0.7		0.7		1.5
Dividends declared per ordinary share	$	—	$	—	$	1.59	$	1.43