XML 35 R24.htm IDEA: XBRL DOCUMENT v3.4.0.3
Share Plans (Tables)
 3 Months Ended
Mar. 31, 2016
Share-based Compensation Expense
Total share-based compensation expense for the three months ended March 31, 2016 and March 28, 2015 was as follows:
 
Three months ended    
In millions
March 31,
2016
March 28,
2015
Restricted stock units
$
7.0

$
6.2

Stock options
5.4

3.5

Performance share units
3.7

—

Total share-based compensation expense
$
16.1

$
9.7
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:
 
2016
Annual Grant
Risk-free interest rate
1.57
%
Expected dividend yield
2.47
%
Expected share price volatility
27.3
%
Expected term (years)
5.9