XML 97 R73.htm IDEA: XBRL DOCUMENT v3.23.2
Risk Management Activities and Derivative Transactions Offsetting of Derivative Assets (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Sep. 30, 2022
Offsetting Assets [Line Items]    
Gross amounts of recognized liabilities $ 1,256 $ 1,160
Total derivatives not subject to master netting or similar arrangement 22 152
Amount of letters of credit outstanding for credit facilities 6  
Forward Contract Derivative Asset, at Fair Value 8 4
Derivative Liability, Not Subject to Master Netting Arrangement 11 7
Derivative Asset, Fair Value, Gross Liability 22 275
Offsetting Derivative Assets [Abstract]    
Derivative, Fair Value, Amount Offset Against Collateral, Net 25  
Letter of Credit    
Offsetting Assets [Line Items]    
Amount of letters of credit outstanding for credit facilities 595 704
Currency Swap    
Offsetting Assets [Line Items]    
Derivative Liability, Subject to Master Netting Arrangement, after Offset 161 240
Interest Rate Contract    
Offsetting Assets [Line Items]    
Gross amounts of recognized liabilities 837 905
Commodity Contract under FHP    
Offsetting Assets [Line Items]    
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement 272  
Total derivatives not subject to master netting or similar arrangement   123
Derivative Asset, Subject to Master Netting Arrangement, after Offset 0 123
Derivative Liability, Not Subject to Master Netting Arrangement 247 8
Derivative Liability, Subject to Master Netting Arrangement, after Offset 247 8
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement 25  
Fair Value, Inputs, Level 2    
Offsetting Assets [Line Items]    
Forward Contract Derivative Asset, at Fair Value 8 4
Fair Value, Inputs, Level 2 | Commodity Contract under FHP    
Offsetting Assets [Line Items]    
Total derivatives not subject to master netting or similar arrangement   123
Derivative Liability, Not Subject to Master Netting Arrangement $ 247 $ 8