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Stock-Based Compensation (Tables)
 6 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of the impact on the entity's results of operations of recording stock-based compensation by function
The impact on the Company’s results of operations of recording stock-based compensation by function for the three and six months ended December 31, 2016 and January 2, 2016 was as follows (in millions):
 
Three Months Ended
 
Six Months Ended
 
December 31, 2016
 
January 2, 2016
 
December 31, 2016
 
January 2, 2016
Cost of sales
$
1.0

 
$
1.4

 
$
2.0

 
$
2.6

Research and development
1.6

 
1.9

 
3.3

 
4.7

Selling, general and administrative
6.5

 
5.6

 
12.5

 
17.6

Stock-based compensation
$
9.1

 
$
8.9

 
$
17.8

 
$
24.9
Schedule of assumptions used to estimate the fair value of new MSU awards on the date of grant
The Company estimates the fair value of the new MSUs granted using a Monte Carlo simulation based on the assumptions described below for the following periods:
 
Six Months Ended
 
December 31, 2016
 
January 2, 2016
Volatility of common stock
35.0
%
 
33.0
%
Average volatility of peer companies
54.7
%
 
52.6
%
Average correlation coefficient of peer companies
0.1856

 
0.0887

Risk-free interest rate
0.8
%
 
0.8
%