Earnings Per Share (EPS) (Tables)

9 Months Ended

Sep. 30, 2013

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	2013	2012	2013	2012
Weighted-average number of basic shares	291.6	307.7	295.9	305.4
Shares issuable under incentive stock plans	3.9	4.3	3.9	3.5
Exchangeable Senior Notes	—	—	—	4.0
Weighted-average number of diluted shares	295.5	312.0	299.8	312.9
Anti-dilutive shares	1.0	2.6	1.1	5.8