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Stock-Based Compensation
6 Months Ended
Dec. 03, 2016
Stock-Based Compensation [Abstract]  
Stock-Based Compensation Stock-Based Compensation

The following table summarizes the stock-based compensation expense and related income tax effect for the periods indicated:
(In millions)
Three Months Ended
 
Six Months Ended
 
December 3, 2016
 
November 28, 2015
 
December 3, 2016
 
November 28, 2015
Stock-based compensation expense
$
3.1

 
$
2.6

 
$
6.5

 
$
6.5

Related income tax effect
1.2

 
1.0

 
2.4

 
2.4



Stock-based compensation expense recognized in the Condensed Consolidated Statements of Comprehensive Income for the three and six month periods ended December 3, 2016 and November 28, 2015 has been reduced for estimated forfeitures, as it is based on awards ultimately expected to vest. Forfeitures are estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ. Forfeitures are estimated based on historical experience.

The following is a detail of the company issued common stock related to the exercise of stock options and vesting of restricted stock and performance share units:
(Shares)
 
Six Months Ended
 
 
December 3, 2016
 
November 28, 2015
Stock Options
 
197,632

 
185,949

Restricted Stock Units
 
86,664

 
163,430

Performance Share Units
 
113,040

 
55,825