XML 83 R60.htm IDEA: XBRL DOCUMENT v3.23.3
Fair Value Measurements and Financial Instruments - Debt Excluding Capital Leases (Detail) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Carrying Amount    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument fair value $ 145,404 $ 148,906
Fair Value    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument fair value 133,358 139,041
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument fair value 79,888 84,385
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument fair value 53,470 54,656
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Debt instrument fair value $ 0 $ 0