Common Equity Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	$ 116,679	$ (2,287)	$ 117,059
Amounts reclassified from accumulated other comprehensive income (loss)	32,919	(55,456)
Other comprehensive income (loss) before reclassifications	83,760	53,169
Accumulated other comprehensive loss, Beginning Balance	(332,528)	(449,207)
Cash flow hedges net unrealized gain (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	(29,754)	(55,487)
Amounts reclassified from accumulated other comprehensive income (loss)	(31,193)	(116,415)
Other comprehensive income (loss) before reclassifications	1,439	60,928
Accumulated other comprehensive loss, Beginning Balance	(1,035)	28,719
Pension and other postretirement liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	195,929	22,496
Amounts reclassified from accumulated other comprehensive income (loss)	65,558	71,609
Other comprehensive income (loss) before reclassifications	130,371	(49,113)
Accumulated other comprehensive loss, Beginning Balance	(338,647)	(534,576)
Net unrealized investment gains [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	(49,496)	30,704
Amounts reclassified from accumulated other comprehensive income (loss)	(1,446)	(10,650)
Other comprehensive income (loss) before reclassifications	(48,050)	41,354
Accumulated other comprehensive loss, Beginning Balance	7,154	56,650
Entergy Louisiana [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	3,951	(235)	10,715
Accumulated other comprehensive loss, Beginning Balance	8,278	4,327
Entergy Louisiana [Member] | Pension and other postretirement liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net other comprehensive income (loss) for the period	3,951	(235)
Amounts reclassified from accumulated other comprehensive income (loss)	(133)	(3,237)
Other comprehensive income (loss) before reclassifications	4,084	3,002
Accumulated other comprehensive loss, Beginning Balance	$ 8,278	$ 4,327	4,562
Restatement Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, Beginning Balance			(446,920)
Restatement Adjustment [Member] | Cash flow hedges net unrealized gain (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, Beginning Balance			84,206
Restatement Adjustment [Member] | Pension and other postretirement liabilities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, Beginning Balance			(557,072)
Restatement Adjustment [Member] | Net unrealized investment gains [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, Beginning Balance			$ 25,946