v3.20.4
Financial Instruments - Derivative Financial Instruments and Hedging Activities - Footnotes (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Derivative [Line Items]      
Amount of Gains/(Losses) Reclassified from OCI into OID and COS [1] $ (21) $ 664 $ (27)
Amount of pre-tax loss to be reclassified 341    
Principal amount [2] 4,000    
Foreign currency long-term debt [Member]      
Derivative [Line Items]      
Principal amount 2,100    
Unsecured Debt [Member] | Senior Unsecured Debt, Due 2043 [Member]      
Derivative [Line Items]      
Principal amount 1,800    
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]      
Derivative [Line Items]      
Amount of Gains/(Losses) Reclassified from OCI into OID and COS 172 [3] 247  
Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member] | Discontinued Operations [Member]      
Derivative [Line Items]      
Amount of Gains/(Losses) Reclassified from OCI into OID and COS $ 22 $ 46  
[1] Reclassified into Other (income)/deductions—net and Cost of sales. See Note 7E.
[2] May be redeemed by us at any time, in whole, or in part, at varying redemption prices plus accrued and unpaid interest. The weighted-average effective interest rate for the notes at issuance was 2.11%.
[3] OID = Other (income)/deductions—net, included in Other (income)/deductions—net in the consolidated statements of income. COS = Cost of Sales, included in Cost of sales in the consolidated statements of income. OCI = Other comprehensive income/(loss), included in the consolidated statements of comprehensive income.