XML 92 R78.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Income Taxes, Reconciliation (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Reconciliation of the provision for income taxes [Abstract]        
Pre-Tax Net Book Income ("NBI") $ 1,437 $ 1,296 $ 2,941 $ 2,728
Texas Margin Tax [1] (10) (10) (27) (16)
State income tax provision, net of federal benefit 0 0 0 (1)
Federal income tax provision computed by applying the federal statutory rate to NBI of corporate entities (5) (3) (8) (6)
Other 0 0 (1) 0
Total provision for income taxes $ (15) $ (13) $ (36) $ (23)
Effective income tax rate (1.00%) (1.00%) (1.20%) (0.80%)
[1] Although the Texas Margin Tax is not considered a state income tax, it has the characteristics of an income tax since it is determined by applying a tax rate to a base that considers our Texas-sourced revenues and expenses.