Quarterly report pursuant to Section 13 or 15(d)

Debt, Secured Revolving Facility and Secured Revolving Line of Credit (Narrative) (Details)

v3.19.3
Debt, Secured Revolving Facility and Secured Revolving Line of Credit (Narrative) (Details)
$ / shares in Units, shares in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 07, 2019
USD ($)
Sep. 30, 2016
USD ($)
day
Sep. 28, 2019
USD ($)
$ / shares
shares
Jun. 29, 2019
USD ($)
Sep. 28, 2019
USD ($)
$ / shares
shares
Sep. 29, 2018
USD ($)
Sep. 27, 2019
$ / shares
Dec. 29, 2018
USD ($)
Jun. 16, 2014
USD ($)
Feb. 26, 2014
USD ($)
Aug. 15, 2012
USD ($)
Debt Instrument [Line Items]                      
Aggregate principal amount repurchased         $ 261,000,000 $ 15,000,000          
Loss on debt redemption, repurchase and conversion     $ 40,000,000   $ 48,000,000 $ 7,000,000          
2.125% Convertible Senior Notes due 2026                      
Debt Instrument [Line Items]                      
Stated interest rate   2.125% 2.125%   2.125%            
Principal amount   $ 805,000,000 $ 679,000,000   $ 679,000,000     $ 805,000,000      
Conversion price (in usd per share) | $ / shares     $ 8.00   $ 8.00            
Repayments of debt     $ 14,000,000   $ 15,000,000            
Convertible debt     $ 126,000,000                
Conversion of stock, shares issued (in shares) | shares     16   16            
Outstanding aggregate principal amount     $ 679,000,000   $ 679,000,000            
Remaining life         84 months            
Share price (in usd per share) | $ / shares             $ 28.72        
If-converted value in excess of principal     $ 1,759,000,000                
Effective interest rate     8.00%   8.00%            
2.125% Convertible Senior Notes due 2026 | Debt Instrument, circumstance 1                      
Debt Instrument [Line Items]                      
Threshold trading days | day   20                  
Threshold consecutive trading days | day   30                  
Threshold percentage of conversion price   130.00%                  
2.125% Convertible Senior Notes due 2026 | Debt Instrument, circumstance 2                      
Debt Instrument [Line Items]                      
Threshold consecutive trading days | day   10                  
Threshold percentage of conversion price   98.00%                  
Conversion period after threshold period days | day   5                  
6.75% Senior Notes due 2019                      
Debt Instrument [Line Items]                      
Stated interest rate                   6.75%  
Principal amount                   $ 600,000,000  
Aggregate principal amount repurchased       $ 66,000,000              
7.50% Senior Notes due 2022                      
Debt Instrument [Line Items]                      
Stated interest rate     7.50%   7.50%           7.50%
Principal amount                     $ 500,000,000
Outstanding aggregate principal amount     $ 312,000,000   $ 312,000,000            
Aggregate principal amount settled         $ 25,000,000            
7.00% Senior Notes due 2024                      
Debt Instrument [Line Items]                      
Stated interest rate     7.00%   7.00%       7.00%    
Principal amount                 $ 500,000,000    
Outstanding aggregate principal amount     $ 96,000,000   $ 96,000,000            
Aggregate principal amount repurchased     80,000,000   $ 154,000,000            
Secured Revolving Credit Facility                      
Debt Instrument [Line Items]                      
Maximum EBITDA debt to EBITDA ratio         4.00            
Minimum EBITDA to cash interest expense ratio         3.00            
Letters of credit outstanding, amount     14,000,000   $ 14,000,000            
Repayments of lines of credit $ 70,000,000                    
Secured Revolving Credit Facility | Secured Revolving Line of Credit                      
Debt Instrument [Line Items]                      
Maximum borrowing capacity $ 500,000,000                    
Debt instrument, term 5 years                    
Amount of assets sales that must be reinvested within twelve month period         250,000,000            
Long-term line of credit     $ 0   $ 0            
Secured Revolving Credit Facility | Swingline Subfacility                      
Debt Instrument [Line Items]                      
Maximum borrowing capacity $ 50,000,000                    
Secured Revolving Credit Facility | Letter of Credit                      
Debt Instrument [Line Items]                      
Maximum borrowing capacity $ 75,000,000                    
Minimum | Secured Revolving Credit Facility | LIBOR                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 1.00%                    
Minimum | Secured Revolving Credit Facility | Base Rate                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 0.00%                    
Maximum | Secured Revolving Credit Facility | LIBOR                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 1.75%                    
Maximum | Secured Revolving Credit Facility | Base Rate                      
Debt Instrument [Line Items]                      
Basis spread on variable rate 0.75%