Annual report pursuant to Section 13 and 15(d)

DEBT (Details)

v3.8.0.1
DEBT (Details)
$ in Millions
12 Months Ended
Sep. 05, 2017
USD ($)
Nov. 13, 2015
USD ($)
Dec. 31, 2017
USD ($)
Rate
Dec. 31, 2016
USD ($)
Rate
Dec. 31, 2015
USD ($)
Rate
Sep. 19, 2013
USD ($)
Rate
Debt Instruments            
Loans payable     $ 57 $ 41    
Weighted average interest rate (as a percent) | Rate     3.01% 4.20% 3.65%  
Commercial paper     $ 298 $ 212    
Leverage ratio     3.5      
Unamortized discount     $ (54) (56)    
Fair value adjustment due to hedge on indebtedness     35 47    
Capital leases     121 88    
Total long-term debt     1,651 1,603    
Less: Current maturities of long-term debt     63 35    
Long-term debt     1,588 1,568    
Total interest incurred     85 75 $ 68  
Interest capitalized     4 6 3  
Principal payments required on long-term debt            
2018     63      
2019     50      
2020     12      
2021     6      
2022     6      
Fair value            
Fair value of total debt [1]     2,301 2,077    
Carrying value of total debt     2,006 1,856    
Senior Notes, 3.65%, due 2023            
Debt Instruments            
Unsecured Debt     $ 500 500    
Debt instrument interest rate (as a percent) | Rate     3.65%      
Debentures, 6.75%, due 2027            
Debt Instruments            
Unsecured Debt     $ 58 58    
Debt instrument interest rate (as a percent) | Rate     6.75%      
Debentures, 7.125%, due 2028            
Debt Instruments            
Unsecured Debt     $ 250 250    
Debt instrument interest rate (as a percent) | Rate     7.125%      
Senior Notes 4.875 Percent, Due 2043            
Debt Instruments            
Unsecured Debt     $ 500 500    
Debt instrument interest rate (as a percent) | Rate     4.875%      
Debentures, 5.65%, due 2098 (effective interest rate 7.48%)            
Debt Instruments            
Unsecured Debt     $ 165 165    
Debt instrument interest rate (as a percent) | Rate     5.65%      
Effective interest rate (as a percent) | Rate     7.48%      
Other long-term debt            
Debt Instruments            
Other Long-term Debt     $ 76 51    
Interest rate contracts | Senior Notes, 3.65%, due 2023            
Debt Instruments            
Unsecured Debt           $ 500
Debt instrument interest rate (as a percent) | Rate           3.65%
London Interbank Offered Rate (LIBOR) | Interest rate contracts | Senior Notes, 3.65%, due 2023            
Debt Instruments            
Debt Instrument, Description of Variable Rate Basis     one-month LIBOR      
Interest Expense | Interest rate contracts            
Other debt disclosure            
Gain/(Loss) on Swaps [2]     $ (7) (8) 6  
Gain/(Loss) on Borrowings [2]     $ 8 $ 12 $ (2)  
Commercial Paper            
Debt Instruments            
Weighted average interest rate (as a percent) | Rate     1.56%      
International and other domestic short-term credit facilities            
Debt Instruments            
Line of credit facility, remaining borrowing capacity     $ 240      
1-year revolving credit agreement            
Debt Instruments            
Term of loan 364 days          
Line of Credit Facility, Maximum Borrowing Capacity $ 1,000          
Line of credit facility, remaining borrowing capacity     1,000      
5-year revolving credit agreement            
Debt Instruments            
Term of loan   5 years        
Line of Credit Facility, Maximum Borrowing Capacity   $ 1,750 $ 1,750      
Revolving credit facility amount available for swingline loans   $ 300        
Debt Instrument, Description of Variable Rate Basis     LIBOR      
Percentage added to reference rate to compute the variable interest rate | Rate     0.75%      
Line of credit facility, remaining borrowing capacity     $ 1,450      
[1] The fair value of debt is derived from Level 2 inputs.
[2] The difference between the gain/(loss) on swaps and borrowings represents hedge ineffectiveness.