Earnings Per Share (EPS) (Tables)

9 Months Ended

Sep. 30, 2011

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	2011	2010	2011	2010
Weighted-average number of basic shares	327.7	324.7	331.0	323.7
Shares issuable under incentive stock plans	2.9	4.9	4.7	4.9
Exchangeable Senior Notes	9.6	9.4	11.4	9.6
Weighted-average number of diluted shares	340.2	339.0	347.1	338.2
Anti-dilutive shares	10.6	13.9	3.0	13.9