Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings Uncommitted Standby Letter of Credit Facilities to Support MISO Obligations (Details)	12 Months Ended
	Dec. 31, 2021 USD ($)
Entergy Arkansas [Member] | Credit Facility Of Twenty Five Million [Member]
Uncommitted Credit Facility	$ 25,000,000
Line of Credit Facility, Commitment Fee Amount	0.0078
Letters Of Credit	8,500,000
Entergy Louisiana [Member] | Credit Facility of One Hundred and Twenty Five Million [Member]
Uncommitted Credit Facility	125,000,000
Line of Credit Facility, Commitment Fee Amount	0.0078
Letters Of Credit	15,000,000.0
Entergy Mississippi [Member] | Credit Facility of Sixty Five Million
Uncommitted Credit Facility	65,000,000
Line of Credit Facility, Commitment Fee Amount	0.0078
Letters Of Credit	9,300,000
Letters of credit posted to cover derivative exposure	200,000
Non-MISO Letters Of Credit	1,000,000
Entergy New Orleans [Member] | Credit Facility of Fifteen Million [Domain]
Uncommitted Credit Facility	15,000,000
Line of Credit Facility, Commitment Fee Amount	0.0100
Letters Of Credit	1,000,000.0
Entergy Texas [Member] | Credit Facility of Eighty Million
Uncommitted Credit Facility	80,000,000
Line of Credit Facility, Commitment Fee Amount	0.00875
Letters Of Credit	79,600,000
Letters of credit posted to cover derivative exposure	$ 100,000