Annual report pursuant to Section 13 and 15(d)

Debt and Other Obligations (Details) (Narrative)

v3.8.0.1
Debt and Other Obligations (Details) (Narrative)
2 Months Ended 12 Months Ended
Mar. 21, 2017
USD ($)
Sep. 14, 2016
USD ($)
day
$ / shares
Apr. 14, 2015
USD ($)
Dec. 11, 2014
USD ($)
Jun. 16, 2014
USD ($)
Feb. 26, 2014
USD ($)
Aug. 15, 2012
USD ($)
Feb. 27, 2018
USD ($)
Dec. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 26, 2015
USD ($)
Dec. 27, 2014
USD ($)
Dec. 29, 2017
$ / shares
Nov. 14, 2017
USD ($)
Sep. 19, 2017
USD ($)
Mar. 20, 2017
USD ($)
Sep. 28, 2016
USD ($)
Sep. 24, 2016
$ / shares
Debt Instrument [Line Items]                                    
Conversion ratio                 0.1250031                  
Conversion price (USD per share) | $ / shares   $ 8.00                                
Remaining term                 105 months                  
Share price (USD per share) | $ / shares                         $ 10.28         $ 6.00
Principal                 $ 1,629,000,000                  
Stock issued in settlement                 38,000,000 $ 8,000,000 $ 0              
Short-term debt [1],[2]                 70,000,000 0                
Payment condition, consecutive days     45 days                              
Loan parties' excess cash availability, consecutive days     45 days                              
Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity       $ 500,000,000                            
Short-term debt                 70,000,000 0                
Letters of credit, maximum borrowing capacity       $ 75,000,000                            
Percentage of eligible accounts receivable     85.00% 85.00%                            
Fixed charge coverage ratio     1.25                              
Fronting fee to agent     0.25%                              
Excess cash availability requirement as a percentage of total commitment     20.00%                              
Letters of credit, outstanding balance                 19,000,000                  
Secured revolving line of credit, remaining borrowing capacity                 $ 92,000,000                  
Repaid aggregate amount of secured revolving line of credit                   $ 230,000,000                
Secured Revolving Line of Credit | Amended and restated loan and security agreement                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity     $ 500,000,000                              
Letters of credit, maximum borrowing capacity     $ 75,000,000                              
Percentage of eligible accounts receivable     90.00%                              
Maximum commitments     $ 200,000,000                              
Average availability for applicable margin     66.66%                              
Fixed charge coverage ratio     1.00                              
Restrictions on company's subsidiaries     $ 50,000,000                              
Excess cash availability requirement as a percentage of total commitment     15.00%                              
Excess cash availability requirement     $ 100,000,000                              
Maximum amount of permitted liens     1,500,000,000                              
Condition related to sufficient amount reserved     50,000,000                              
Loan parties’ excess cash availability     75,000,000                              
Limit on amount of default related to bankruptcy     50,000,000                              
Limit on amount of default related to judgments     50,000,000                              
Limit on amount of default related to a loss, theft damage or destruction not covered by insurance     $ 50,000,000                              
Secured Revolving Line of Credit | When less than 35% of the Secured Revolving Line of Credit utilized                                    
Debt Instrument [Line Items]                                    
Unused capacity, commitment fee percentage     0.25%                              
Secured Revolving Line of Credit | Federal Funds | Amended and restated loan and security agreement                                    
Debt Instrument [Line Items]                                    
Basis spread on variable rate     0.50%                              
Secured Revolving Line of Credit | LIBOR | Amended and restated loan and security agreement                                    
Debt Instrument [Line Items]                                    
Basis spread on variable rate     1.00%                              
Basis spread on variable rate, applicable margin     0.0125                              
Secured Revolving Line of Credit | Base Rate | Amended and restated loan and security agreement                                    
Debt Instrument [Line Items]                                    
Basis spread on variable rate, applicable margin     0.0025                              
2.125% Convertible Senior Notes Due 2026                                    
Debt Instrument [Line Items]                                    
Interest rate, stated percentage   2.125%             2.125% 2.125%                
Principal amount, at time of issuance   $ 700,000,000                             $ 105,000,000  
If-converted value in excess of principal                 $ 229,000,000                  
Effective interest rate                 8.00%                  
Principal                 $ 805,000,000 $ 805,000,000                
Redemption price, percentage   100.00%                                
6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Interest rate, stated percentage           6.75%     6.75%                  
Repurchase partial tender offer                   442,000,000                
Principal amount, at time of issuance           $ 600,000,000                        
Principal                 $ 166,000,000 $ 196,000,000                
Repayments of debt                 26,000,000                  
Stock issued in settlement                 $ 5,000,000                  
7.50% Senior Notes due 2022                                    
Debt Instrument [Line Items]                                    
Interest rate, stated percentage             7.50%   7.50% 7.50%                
Repurchase partial tender offer                   $ 135,000,000                
Principal amount, at time of issuance             $ 500,000,000                      
Extinguishment of debt                 $ 3,000,000 125,000,000   $ 25,000,000            
Principal                 347,000,000 $ 350,000,000                
Repayments of debt, including accrued interest                     $ 24,000,000              
Stock issued in settlement                 $ 3,000,000                  
7.00% Senior Notes due 2024                                    
Debt Instrument [Line Items]                                    
Interest rate, stated percentage         7.00%       7.00% 7.00%                
Principal amount, at time of issuance         $ 500,000,000                          
Extinguishment of debt                 $ 105,000,000 $ 84,000,000                
Principal                 311,000,000 416,000,000                
Repayments of debt                 84,000,000 77,000,000                
Stock issued in settlement                 26,000,000 8,000,000                
Debt Instrument, circumstance 1 | 6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage           100.00%                        
Debt Instrument, circumstance 1 | 7.50% Senior Notes due 2022                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage             100.00%                      
Debt Instrument, circumstance 1 | 7.00% Senior Notes due 2024                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage         100.00%                          
Debt Instrument, circumstance 2 | 6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage           101.00%                        
Debt Instrument, circumstance 2 | 7.50% Senior Notes due 2022                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage             101.00%                      
Debt Instrument, circumstance 2 | 7.00% Senior Notes due 2024                                    
Debt Instrument [Line Items]                                    
Redemption price, percentage         101.00%                          
6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Extinguishment of debt                 $ 30,000,000 404,000,000                
2.125% Convertible Senior Notes Due 2026 | Convertible Debt                                    
Debt Instrument [Line Items]                                    
Debt issuance cost, net                   15,000,000                
Payments of stock issuance cost                   $ 9,000,000                
2.125% Convertible Senior Notes Due 2026 | Debt Instrument, circumstance 1 | Convertible Debt                                    
Debt Instrument [Line Items]                                    
Convertible, threshold trading days | day   20                                
Threshold consecutive trading days | day   30                                
Threshold percentage of stock price trigger   130.00%                                
2.125% Convertible Senior Notes Due 2026 | Debt Instrument, circumstance 2 | Convertible Debt                                    
Debt Instrument [Line Items]                                    
Threshold consecutive trading days | day   10                                
Threshold principal amount   $ 1,000                                
Conversion period after threshold period days | day   5                                
Threshold percentage of stock price trigger   98.00%                                
Letter of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity $ 45,000,000                             $ 75,000,000    
Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity 500,000,000                         $ 300,000,000 $ 220,000,000      
Secured revolving line of credit, increase amount $ 200,000,000                                  
Secured revolving line of credit, interest rate at period end                 4.75%                  
During first fiscal quarter | Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity                             220,000,000      
During second and third fiscal quarter | Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity                             300,000,000      
During first day of fourth fiscal quarter through December 20 | Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Secured revolving line of credit, maximum borrowing capacity                             300,000,000      
Maximum | Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Percentage of eligible accounts receivable 85.00%                                  
Percent of certain qualified accounts receivable 90.00%                                  
Maximum | During first day of fourth fiscal quarter through December 20 | Secured Revolving Line of Credit                                    
Debt Instrument [Line Items]                                    
Maximum amount of Qualified Factors Account                             $ 220,000,000      
Subsequent Event | 6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Interest rate, stated percentage               6.75%                    
Repayments of debt               $ 14,000,000                    
Subsequent Event | 6.75% Senior Notes due 2019                                    
Debt Instrument [Line Items]                                    
Extinguishment of debt               $ 13,600,000                    
[1] Amounts reflected adoption of FASB ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs beginning in the first quarter of 2016.
[2] Amounts reflected adoption of FASB ASU 2015-17, Balance Sheet Classification of Deferred Taxes beginning in the first quarter of 2016.