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Debt, Secured Revolving Facility and Secured Revolving Line of Credit (Details) (Future Payments on Total Debt) - USD ($)
$ in Millions
Dec. 28, 2019
Dec. 29, 2018
Debt Disclosure [Abstract]    
2020 $ 0  
2021 0  
2022 312  
2023 0  
2024 0  
2025 and thereafter 251  
Total $ 563 $ 1,528