XML 78 R61.htm IDEA: XBRL DOCUMENT v3.22.0.1
Fair Value Measurements (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Fair value of assets and liabilities    
Long-term debt $ 1,957 $ 1,751
Recurring    
Fair value of assets and liabilities    
Available for sale securities 12 11
Derivative assets 74 69
Derivative liabilities 32 29
Long-term debt 1,957 1,751
Recurring | Level 1    
Fair value of assets and liabilities    
Available for sale securities 12 11
Derivative assets 49 53
Derivative liabilities 22 3
Recurring | Level 2    
Fair value of assets and liabilities    
Derivative assets 25 16
Derivative liabilities 10 26
Long-term debt $ 1,957 $ 1,751