Leases (Future Minimum Lease Payments Sale Leaseback Transactions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Year One	$ 2,310,306
Year Two	2,176,275
Year Three	1,525,640
Year Four	2,305,720
Year Five	1,129,490
Long-term Debt, Fair Value	22,573,837	$ 27,061,171
Interest Expense, Debt	940,060	863,712	$ 837,981
Total Long-Term Debt	25,932,549	25,880,901
System Energy [Member]
Year One	300,000
Year Two	0
Year Three	272,600
Year Four	0
Year Five	90,000
Long-term Debt, Fair Value	702,473	743,040
Interest Expense, Debt	37,381	38,393	34,467
Total Long-Term Debt	777,905	741,296
System Energy [Member] | Grand Gulf [Member]
Year One	17,188
Year Two	17,188
Year Three	17,188
Year Four	17,188
Year Five	17,188
Long-term Debt, Maturities, Repayments of Principal after Year Five	154,688
Long-term Debt, Fair Value	240,628
Interest Expense, Debt	206,330
Total Long-Term Debt	34,298
Entergy Louisiana [Member]
Year One	1,010,000
Year Two	1,700,000
Year Three	373,900
Year Four	650,000
Year Five	570,000
Long-term Debt, Fair Value	9,444,665	11,492,650
Interest Expense, Debt	373,480	350,227	$ 331,352
Total Long-Term Debt	$ 10,698,922	$ 10,914,346