Related-Party Transactions (Tables)	12 Months Ended
Dec. 31, 2021
Related-Party Transactions [Abstract]
Schedule Of Amounts Payable To (Receivables From) Related Parties	At December 31, 2021 At December 31, 2020 STH Texas Transmission Total STH Texas Transmission Total Federal income taxes payable (receivable) $ (5) $ (1) $ (6) $ (6) $ (1) $ (7)Texas margin tax payable 24 - 24 23 - 23Net payable (receivable) $ 19 $ (1) $ 18 $ 17 $ (1) $ 16
Schedule Of Cash Payments Made To Related Parties To Income Taxes	Year Ended December 31, 2021 2020 2019 STH Texas Transm. Total STH Texas Transm. Total STH Texas Transm. Total Federal income taxes $ 49 $ 12 $ 61 $ 70 $ 17 $ 87 $ 45 $ 11 $ 56 Texas margin taxes 23 - 23 22 - 22 22 - 22 Total payments $ 72 $ 12 $ 84 $ 92 $ 17 $ 109 $ 67 $ 11 $ 78

Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.

No definition available.

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