XML 55 R45.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Derivative Instruments and Hedging Activities - Schedule of Notional Amounts of Outstanding Derivative Positions (Detail) - USD ($)
$ in Millions
Mar. 31, 2024
Sep. 30, 2023
Foreign Exchange Contracts    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount of derivative $ 2,220 $ 3,146
Cross-currency swaps (a) | Net investment hedges    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount of derivative 2,119 2,119
Interest Rate Swaps | Fair value hedges    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount of derivative 700 700
Forward Starting Interest Rate Swaps | Cash flow hedges    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount of derivative 0 500
Foreign Currency-Denominated Debt | Net investment hedges    
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Notional amount of derivative $ 1,891 $ 1,056