Annual report pursuant to Section 13 and 15(d)

Financing (Narrative) (Details)

v3.8.0.1
Financing (Narrative) (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Aug. 15, 2016
USD ($)
Rate
Dec. 07, 2015
USD ($)
Aug. 17, 2015
USD ($)
Rate
Feb. 03, 2018
USD ($)
Rate
Jul. 29, 2017
USD ($)
Feb. 03, 2018
USD ($)
Rate
Jan. 28, 2017
USD ($)
Jan. 30, 2016
USD ($)
May 06, 2016
USD ($)
Extinguishment of debt       $ 400,000,000 $ 247,000,000        
Additional interest expense from early repurchase of debt       (11,000,000) 1,000,000 $ (10,000,000) $ 0 $ 0  
Amount of outstanding debt repaid at maturity           300,000,000 636,000,000 69,000,000  
Debt Instrument, Repurchase Amount       423,000,000 $ 257,000,000 $ 423,000,000      
Line of credit facility, maximum borrowing capacity                 $ 1,500,000,000
Line of credit facility, maximum borrowing capacity at Company's option                 $ 1,750,000,000
Letters of Credit Outstanding, Amount             0    
Interest coverage ratio           8.94      
Leverage ratio           2.04      
Minimum specified interest coverage ratio in credit agreement           3.25      
Maximum specified leverage ratio in credit agreement           3.75      
Amount non-recurring cash charges may not exceed in credit agreement           $ 300,000,000      
Amount of indebtedness due prior to maturity that would result in default under credit agreements           150,000,000      
Cross Default Provision In Credit Agreement Floor           100,000,000      
Commercial paper       1,500,000,000   1,500,000,000      
commercial paper maximum borrowings           0 388,000,000    
Prepaid expenses and other current assets pledged as collateral for debt security       37,000,000   37,000,000 37,000,000    
8.125% Senior Debentures Due 2035 [Member]                  
Extinguishment of debt $ 108,000,000   $ 76,000,000     0 0 76,000,000  
Debt instrument interest rate, stated percentage | Rate     8.125%            
Seven Point Eight Seven Five Percent Senior Debentures Due Two Thousand Thirty Six [Member]                  
Debt instrument interest rate, stated percentage | Rate 7.875%                
Other Standby and Commercial Letters of Credit [Member]                  
Debt instrument, principal outstanding       28,000,000   28,000,000 30,000,000    
Six Point Nine Percent Senior Debentures Due Two Thousand Thirty Two [Member]                  
Extinguishment of debt       $ 147,000,000   $ 219,000,000 0 0  
Debt instrument interest rate, stated percentage | Rate       6.90%   6.90%      
Debt instrument, principal outstanding       $ 31,000,000   $ 31,000,000 250,000,000    
Six Point Seven Percent Senior Debentures Due Two Thousand Thirty Four [Member]                  
Extinguishment of debt       $ 108,000,000   $ 136,000,000 0 0  
Debt instrument interest rate, stated percentage | Rate       6.70%   6.70%      
Debt instrument, principal outstanding       $ 264,000,000   $ 264,000,000 400,000,000    
Six Point Three Seven Five Percent Senior Notes Due Two Thousand Thirty Seven [Member]                  
Extinguishment of debt       $ 96,000,000   $ 231,000,000 0 0  
Debt instrument interest rate, stated percentage | Rate       6.375%   6.375%      
Debt instrument, principal outstanding       $ 269,000,000   $ 269,000,000 500,000,000    
Eight Point Seven Five Percent Senior Debentures Due Two Thousand Twenty Nine [Member]                  
Extinguishment of debt       $ 43,000,000   $ 43,000,000 0 0  
Debt instrument interest rate, stated percentage | Rate       8.75%   8.75%      
Debt instrument, principal outstanding       $ 18,000,000   $ 18,000,000 61,000,000    
Seven Point Eight Seven Five Percent Senior Debentures Due Two Thousand Thirty [Member]                  
Extinguishment of debt       $ 6,000,000   $ 6,000,000 0 0  
Debt instrument interest rate, stated percentage | Rate       7.875%   7.875%      
Debt instrument, principal outstanding       $ 12,000,000   $ 12,000,000 18,000,000    
3.45% senior notes due 2021 [Member]                  
Proceeds from Issuance of Debt   $ 500,000,000              
Debt instrument interest rate, stated percentage   3.45%   3.45%   3.45%      
Debt instrument, principal outstanding       $ 500,000,000   $ 500,000,000 500,000,000    
3.625% senior notes due 2024 [Member]                  
Debt instrument interest rate, stated percentage | Rate       3.625%   3.625%      
Debt instrument, principal outstanding       $ 500,000,000   $ 500,000,000 500,000,000    
7.875% Senior Notes Due 2015 [Member]                  
Extinguishment of debt           $ 0 108,000,000 $ 0  
4.375% Senior notes due 2023 [Member]                  
Debt instrument interest rate, stated percentage | Rate       4.375%   4.375%      
Debt instrument, principal outstanding       $ 400,000,000   $ 400,000,000 400,000,000    
3.875% Senior notes due 2022 [Member]                  
Debt instrument interest rate, stated percentage | Rate       3.875%   3.875%      
Debt instrument, principal outstanding       $ 550,000,000   $ 550,000,000 550,000,000    
5.125% Senior debentures due 2042 [Member]                  
Debt instrument interest rate, stated percentage | Rate       5.125%   5.125%      
Debt instrument, principal outstanding       $ 250,000,000   $ 250,000,000 250,000,000    
2.875% Senior notes due 2023 [Member]                  
Debt instrument interest rate, stated percentage | Rate       2.875%   2.875%      
Debt instrument, principal outstanding       $ 750,000,000   $ 750,000,000 750,000,000    
4.3% Senior notes due 2043 [Member]                  
Debt instrument interest rate, stated percentage | Rate       4.30%   4.30%      
Debt instrument, principal outstanding       $ 250,000,000   $ 250,000,000 250,000,000    
4.5% senior notes due 2034[Member]                  
Debt instrument interest rate, stated percentage | Rate       4.50%   4.50%      
Debt instrument, principal outstanding       $ 550,000,000   $ 550,000,000 550,000,000    
Fair Value                  
Long-term debt       5,751,000,000   5,751,000,000 6,438,000,000    
Carrying Amount                  
Long-term debt       $ 5,835,000,000   $ 5,835,000,000 6,535,000,000    
Revolving Credit Facility [Member]                  
Long-term Line of Credit             $ 0