XML 60 R47.htm IDEA: XBRL DOCUMENT v3.21.2
Financial Instruments (Aggregate Notional Amounts, Aggregate Fair Values and Carrying Values) (Details) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Derivative [Line Items]    
Carrying value $ 28,127 $ 29,471
Foreign Currency Denominated Debt [Member]    
Derivative [Line Items]    
Carrying value 4,905 5,171
Fair value 5,288 5,687
Foreign Currency Contract [Member] | Net Investment Hedging [Member]    
Derivative [Line Items]    
Foreign currency contracts (notional amounts) $ 0 $ 1,066