Annual report pursuant to Section 13 and 15(d)

Debt and Other Obligations (Details) (Summary of Debt and Other Obligations)

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Debt and Other Obligations (Details) (Summary of Debt and Other Obligations) - USD ($)
$ in Millions
Dec. 29, 2018
Dec. 30, 2017
Sep. 14, 2016
Jun. 16, 2014
Feb. 26, 2014
Aug. 15, 2012
Debt Instrument [Line Items]            
Long-term debt, gross $ 1,458          
Secured Revolving Line of Credit [1] 136 $ 70        
Total debt (principal amount) 1,528 1,699        
Unamortized debt discount (262) (286)        
Unamortized debt issuance costs (16) (19)        
Other 0 1        
Total debt (net) 1,250 1,395        
Short-term debt, gross 136 70        
Long-term debt, less current portion [1] 1,114 1,325        
Secured Revolving Line of Credit            
Debt Instrument [Line Items]            
Secured Revolving Line of Credit $ 70 $ 70        
6.75% Senior Notes due 2019            
Debt Instrument [Line Items]            
Interest rate, stated percentage 6.75% 6.75%     6.75%  
Long-term debt, gross   $ 166        
7.50% Senior Notes due 2022            
Debt Instrument [Line Items]            
Interest rate, stated percentage 7.50% 7.50%       7.50%
Long-term debt, gross $ 337 $ 347        
7.00% Senior Notes due 2024            
Debt Instrument [Line Items]            
Interest rate, stated percentage 7.00% 7.00%   7.00%    
Long-term debt, gross $ 250 $ 311        
2.125% Convertible Senior Notes Due 2026            
Debt Instrument [Line Items]            
Interest rate, stated percentage 2.125% 2.125% 2.125%      
Long-term debt, gross $ 805 $ 805        
Unamortized debt discount (262) (286)        
Total debt (net) $ 532 $ 507        
[1] Prior year amounts adjusted to reflect the retrospective application of ASU 2014-09, Revenue from Contracts with Customers. Refer to Note 2.