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Weighted-Average Shares (Tables)
 9 Months Ended
Sep. 27, 2020
Earnings Per Share [Abstract]  
Calculation of Weighted-Average Shares
Weighted-average shares were calculated as follows (in thousands):
 Three-months EndedNine-months Ended
 September 27, 2020September 29, 2019September 27, 2020September 29, 2019
Basic weighted-average common shares outstanding173,943 170,744 172,881 171,053 
Effect of dilutive equity awards3,195 3,705 3,157 4,111 
Weighted-average common and common-equivalent shares outstanding177,138 174,449 176,038 175,164