Share Plans (Tables)

9 Months Ended

Sep. 27, 2014

Share-based Compensation Expense

Total share-based compensation expense for the three and nine months ended September 27, 2014 and September 28, 2013 was as follows:

	Three months ended				Nine months ended
In millions	September 27, 2014		September 28, 2013		September 27, 2014		September 28, 2013
Restricted stock units	$	5.6	$	4.6	$	16.7	$	16.4
Stock options	2.7		2.6		8.1		8.9
Total share-based compensation expense	$	8.3	$	7.2	$	24.8	$	25.3

Assumptions Used in Calculating Estimated Fair Value of Stock Option Award

We estimated the fair value of each stock option award issued in the annual share-based compensation grant using a Black-Scholes option pricing model, modified for dividends and using the following assumptions:

	2014 Annual Grant
Risk-free interest rate	1.43	%
Expected dividend yield	1.45	%
Expected share price volatility	35.3	%
Expected term (years)	5.6