Leases (Future Minimum Lease Payments Sale Leaseback Transactions) (Details) (Entergy Louisiana [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Entergy Louisiana [Member]
2013	$ 26,301
2014	31,036
2015	28,827
2016	16,938
2017	106,335
Total	209,437
Less: Amount representing interest	46,488
Present value of net minimum lease payments	$ 162,949