XML 72 R56.htm IDEA: XBRL DOCUMENT v3.21.2
Derivative Financial Instruments (Schedule Of Derivative Financial Instruments Included In The Consolidated Balance Sheets) (Details) - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Derivatives Fair Value [Line Items]    
Gross Fair Value $ (1,084) $ (142)
Net Fair Value (1,084) (142)
Short-term Derivative Asset [Member]    
Derivatives Fair Value [Line Items]    
Gross Fair Value 3 23
Amounts Netted (1) (18)
Net Fair Value $ 2 5
Balance Sheet Classification Other current assets  
Long-term Derivative Asset [Member]    
Derivatives Fair Value [Line Items]    
Gross Fair Value   1
Net Fair Value   1
Balance Sheet Classification Other long-term assets  
Short-term Derivative Liability [Member]    
Derivatives Fair Value [Line Items]    
Gross Fair Value $ (984) (161)
Amounts Netted 1 18
Net Fair Value $ (983) (143)
Balance Sheet Classification Other current liabilities  
Long-term Derivative Liability [Member]    
Derivatives Fair Value [Line Items]    
Gross Fair Value $ (103) (5)
Net Fair Value $ (103) $ (5)
Balance Sheet Classification Other long-term liabilities