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DEBT Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2020
Aug. 31, 2020
Jul. 31, 2020
Sep. 30, 2020
Sep. 30, 2020
Dec. 31, 2019
Debt Instrument [Line Items]            
Debt and capital lease obligations $ 8,700     $ 8,700 $ 8,700  
Debt fair value 10,700     10,700 10,700  
Accounts and Financing Receivable, after Allowance for Credit Loss, Current 3,034     3,034 3,034 $ 3,280
Debt covenant compliance, minimum net worth 9,000     9,000 $ 9,000  
Debt covenant compliance, minimum debt to capital ratio         60.00%  
364-Day Revolving Credit Agreement [Member]            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity 750     750 $ 750  
Line of Credit Facility, Fair Value of Amount Outstanding 0     0 0  
Revolving Credit Facility [Member]            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity 1,500     1,500 1,500  
Line of Credit Facility, Fair Value of Amount Outstanding 0     0 0  
Commercial Paper            
Debt Instrument [Line Items]            
Line of credit facility, maximum borrowing capacity 1,000     1,000 1,000  
Line of credit, current $ 140     $ 140 $ 140  
Debt, Weighted Average Interest Rate 0.17%     0.17% 0.17%  
Receivables Securitization Program [Member]            
Debt Instrument [Line Items]            
Collateralized Agreements $ 550     $ 550 $ 550  
Collateralized agreements, value of amount outstanding 0     0 $ 0  
Bonds [Member]            
Debt Instrument [Line Items]            
Short-term Debt, Refinanced, Amount     $ 122      
Other Corporate Bonds [Member]            
Debt Instrument [Line Items]            
Repayments of Debt $ 700 $ 203   $ 406    
Minimum [Member] | Bonds [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     1.38%      
Minimum [Member] | Other Corporate Bonds [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 3.00%     3.00% 3.00%  
Maximum [Member] | Bonds [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage     1.60%      
Maximum [Member] | Other Corporate Bonds [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Interest Rate, Stated Percentage 3.80%     3.80% 3.80%