Rate And Regulatory Matters Rate and Regulatory Matters (Payments/Receipts Among The Utility Operating Companies) (Details) - FERC April 2020 Order [Member] - USD ($) $ in Millions	1 Months Ended
	Jul. 31, 2020	Jun. 30, 2020
Entergy Arkansas [Member]
Receipts from utility operating companies pursuant to FERC order		$ (2.8)
Payments to utility operating companies pursuant to FERC order	$ 1.5
Entergy Louisiana [Member]
Payments to utility operating companies pursuant to FERC order		2.3
Entergy Mississippi [Member]
Payments to utility operating companies pursuant to FERC order		0.2
Entergy New Orleans [Member]
Receipts from utility operating companies pursuant to FERC order		(0.1)
Entergy Texas [Member]
Payments to utility operating companies pursuant to FERC order		$ 0.4