Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2020

Earnings Per Share [Abstract]

Basic and Diluted Earnings Per Share

Basic and diluted earnings per share were calculated as follows:

	Three months ended				Six months ended
In millions, except per-share data	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
Net income	$	25.8	$	60.9	$	44.4	$	117.3
Weighted average ordinary shares outstanding
Basic	169.9		171.5		169.9		174.0
Dilutive impact of stock options, restricted stock units and performance share units	0.5		1.5		0.8		1.6
Diluted	170.4		173.0		170.7		175.6
Earnings per ordinary share
Basic earnings per ordinary share	$	0.15	$	0.36	$	0.26	$	0.67
Diluted earnings per ordinary share	$	0.15	$	0.35	$	0.26	$	0.67
Anti-dilutive stock options excluded from the calculation of diluted earnings per share	4.5		2.1		3.4		2.0