XML 38 R17.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-Based Compensation
3 Months Ended
Aug. 28, 2021
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 three months ended:
Three Months Ended
(In millions)August 28, 2021August 29, 2020
Stock-based compensation expense$15.1 $1.5 
Related income tax effect$3.7 $0.3 

The increase to Stock-based compensation expense was driven in part by the additional of Knoll's equity-based compensation awards. This impact includes the accelerated stock-compensation award expense related to workforce reductions as part of the Knoll integration.
Certain of the Company's equity-based compensation awards contain provisions that allow for continued vesting into retirement. Stock-based awards are considered fully vested for expense attribution purposes when the employee's retention of the award is no longer contingent on providing subsequent service.