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Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Long-Term Debt Instruments) (Details) - USD ($) $ in Thousands	1 Months Ended			6 Months Ended
	May 31, 2026	Mar. 31, 2026	Jan. 31, 2026	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Long-Term Debt, Fair Value				$ 30,712,302		$ 28,208,822
Long-Term Debt				33,057,826		30,277,161
Proceeds from Issuance of Long-Term Debt				4,625,848	$ 3,517,949
Entergy Arkansas [Member]
Long-Term Debt, Fair Value				5,273,485		4,931,734
Long-Term Debt				5,841,909		5,423,604
Proceeds from Issuance of Long-Term Debt				1,267,608	350,312
Entergy Arkansas [Member] \| 4.95% Series mortgage bonds due January 2036 [Member]
Proceeds from Issuance of Debt			$ 500,000
Debt Instrument, Interest Rate, Stated Percentage			4.95%
Entergy Arkansas [Member] \| 5.75% Series mortgage bonds due January 2056 [Member]
Proceeds from Issuance of Debt			$ 500,000
Debt Instrument, Interest Rate, Stated Percentage			5.75%
Entergy Arkansas [Member] \| 3.5% Series mortgage bonds due April 2026 [Member]
Debt Instrument, Interest Rate, Stated Percentage			3.50%
Repayments of Debt			$ 600,000
Entergy Louisiana [Member]
Long-Term Debt, Fair Value				10,643,441		9,510,545
Long-Term Debt				11,564,821		10,366,835
Proceeds from Issuance of Long-Term Debt				1,843,941	1,465,747
Entergy Louisiana [Member] \| 4.44% Series mortgage bonds due January 2026 [Member]
Debt Instrument, Interest Rate, Stated Percentage			4.44%
Repayments of Debt			$ 250,000
Entergy Mississippi [Member]
Long-Term Debt, Fair Value				3,370,025		2,755,286
Long-Term Debt				3,666,384		3,021,324
Proceeds from Issuance of Long-Term Debt				643,911	592,679
Entergy Mississippi [Member] \| 5.05% Series mortgage bonds due April 2036 [Member]
Proceeds from Issuance of Debt		$ 650,000
Debt Instrument, Interest Rate, Stated Percentage		5.05%
Entergy New Orleans [Member]
Long-Term Debt, Fair Value				627,938		621,670
Long-Term Debt				661,221		656,849
Proceeds from Issuance of Long-Term Debt				89,106	79,717
Entergy New Orleans [Member] \| 6.65% Series mortgage bonds due June 2056 [Member]
Proceeds from Issuance of Debt	$ 55,000
Debt Instrument, Interest Rate, Stated Percentage	6.65%
Entergy New Orleans [Member] \| 5.91% Series mortgage bonds due June 2036 [Member]
Proceeds from Issuance of Debt	$ 35,000
Debt Instrument, Interest Rate, Stated Percentage	5.91%
Entergy Texas [Member]
Long-Term Debt, Fair Value				4,129,543		3,780,405
Long-Term Debt				4,442,972		4,030,188
Proceeds from Issuance of Long-Term Debt				419,755	493,772
Entergy Texas [Member] \| 5.20% Series mortgage bonds due June 2036 [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.20%
Proceeds from Issuance of Long-Term Debt	$ 425,000
System Energy [Member]
Long-Term Debt, Fair Value				1,187,778		1,104,007
Long-Term Debt				1,188,885		$ 1,088,703
Proceeds from Issuance of Long-Term Debt				$ 364,108	$ 538,108