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Net Income Per Common Share
 3 Months Ended
Mar. 28, 2020
Earnings Per Share [Abstract]  
Net Income Per Common Share
Net Income (Loss) Per Common Share
Basic per share information is calculated by dividing net income by the weighted average number of shares outstanding. Diluted per share information is calculated by also considering the impact of potential common stock on both net income and the weighted average number of shares outstanding.
The elements of the earnings per share computations were as follows:
 
13 weeks ended
 (In millions, except per share amounts)
March 28,
2020
 
March 30,
2019
Net income (loss)
$
(7.8
)
 
$
36.9

Weighted-average shares of common stock outstanding
48.9

 
48.7

Common equivalent shares:
 
 
 
Assumed exercise of dilutive options, restricted shares, restricted stock units and performance share units
—

 
0.1

Weighted-average common and common equivalent shares outstanding
48.9

 
48.8

Basic earnings per share
$
(0.16
)
 
$
0.76

Diluted earnings per share
$
(0.16
)
 
$
0.76

Shares excluded from the determination of potential common stock because inclusion would have been anti-dilutive
4.2

 
3.9