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Income Taxes (Notes)
 6 Months Ended
Jun. 30, 2024
Income Tax Disclosure [Abstract]  
Income Taxes
9.  Income Taxes

Income tax expense included on our accompanying consolidated statements of income is as follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
2024202320242023
(In millions, except percentages)
Income tax expense$168 $168 $377 $364 
Effective tax rate21.8 %21.6 %21.5 %21.7 %

The effective tax rate for the three months ended June 30, 2024 is higher than the statutory federal rate of 21% primarily due to state income taxes, partially offset by dividend-received deductions from our investments in Florida Gas Pipeline (Citrus), NGPL Holdings and Products (SE) Pipe Line Company (PPL).

The effective tax rate for the six months ended June 30, 2024 is higher than the statutory federal rate of 21% primarily due to state income taxes, partially offset by dividend-received deductions from our investments in Citrus, NGPL Holdings and PPL, and an adjustment to our deferred tax liability as a result of a reduction in the state tax rate.
The effective tax rates for the three and six months ended June 30, 2023 are higher than the statutory federal rate of 21% primarily due to state income taxes, partially offset by dividend-received deductions from our investments in Citrus, NGPL Holdings and PPL