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Debt - Convertible Senior Notes (Details)
$ / shares in Units, $ in Millions
12 Months Ended
Mar. 06, 2017
USD ($)
item
$ / shares
Dec. 28, 2019
item
1.375% Convertible Senior Notes    
Debt    
Principal amount | $ $ 400.0  
Semi-annual interest rate 1.375%  
Conversion rate, shares per $1,000 principal 10.7744  
Number of shares of common stock | $ 4.3  
Initial conversion price | $ / shares $ 92.81  
Debt issuance costs | $ $ 10.6  
1.375% Convertible Senior Notes | Conversion of Notes, Holders    
Debt    
Number of trading days within 30 trading day period 20  
Number of consecutive trading days 30  
Debt Instrument, Convertible, Stock Price Trigger | $ / shares $ 120.66  
Minimum amount the sales price of the Company's stock exceeds the conversion price (as a percent) 130.00%  
Number of consecutive business days after the 10 consecutive trading day period 5  
Number of consecutive trading days before the five consecutive business days 10  
Maximum amount the sales price of the Company's stock exceeds the conversion price (as a percent) 98.00%  
1.375% Convertible Senior Notes | Conversion of Notes, Company    
Debt    
Number of trading days within 30 trading day period   20
Number of consecutive trading days   30
Minimum amount the sales price of the Company's stock exceeds the conversion price (as a percent)   130.00%
Amended Credit Agreement | Credit Facility    
Debt    
Repayments of Lines of Credit | $ $ 72.5