XML 68 R55.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value Measurements (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Fair Value Measurements:    
Carrying Value $ 87,964 $ 82,752
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Net 2,583 2,539
Other noncurrent assets 3,475 3,449
Senior notes and debentures    
Fair Value Measurements:    
Carrying Value 78,015 72,671
Credit facilities    
Fair Value Measurements:    
Carrying Value 9,949 10,081
Level 1 | Senior notes and debentures    
Fair Value Measurements:    
Fair Value 87,958 84,163
Level 2 | Credit facilities    
Fair Value Measurements:    
Fair Value 9,963 10,063
Equipment installment plan receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts Receivable, Net 363 338
Other noncurrent assets 173 134
Cross Currency Derivatives | Level 2    
Fair Value Measurements:    
Derivative Liability $ 206 $ 184