Quarterly report pursuant to Section 13 or 15(d)

Debt and Secured Revolving Facility (Details)

v3.20.2
Debt and Secured Revolving Facility (Details) - USD ($)
Jun. 27, 2020
Dec. 28, 2019
Sep. 30, 2016
Aug. 15, 2012
Debt Instrument [Line Items]        
Total debt (principal amount) $ 763,000,000 $ 563,000,000    
Total debt (net) 690,000,000 486,000,000    
Less: short term debt (200,000,000) 0    
Long-term debt, net 490,000,000 486,000,000    
2.125% Convertible Senior Notes due 2026 | Convertible Debt        
Debt Instrument [Line Items]        
Total debt (principal amount) 251,000,000 251,000,000    
Unamortized debt discount (69,000,000) (73,000,000)    
Unamortized debt issuance costs $ (3,000,000) $ (3,000,000)    
Stated interest rate 2.125% 2.125% 2.125%  
7.50% Senior Notes due 2022 | Senior Notes        
Debt Instrument [Line Items]        
Total debt (principal amount) $ 312,000,000 $ 312,000,000    
Unamortized debt issuance costs $ (1,000,000) (1,000,000)    
Stated interest rate 7.50%     7.50%
Secured Revolving Credit Facility | Revolving Credit Facility        
Debt Instrument [Line Items]        
Total debt (principal amount) $ 200,000,000 $ 0