XML 48 R38.htm IDEA: XBRL DOCUMENT v3.22.2
Borrowings and Other Financing Instruments Term Loan (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Short-term Debt [Line Items]      
Amount outstanding at period end $ 136   $ 1,005
Proceeds from issuance of common stock 151 $ 11  
Letter of Credit      
Short-term Debt [Line Items]      
Amount outstanding at period end $ 39   $ 19