Fair Value Accounting, Restricted Investments (Details) (Cleco Power [Member], USD $)	9 Months Ended
	Sep. 30, 2014	Jul. 31, 2012	Dec. 31, 2007	Dec. 31, 2013 Municipal Bonds [Member]	Dec. 31, 2013 Corporate Bonds [Member]	Dec. 31, 2013 Federal Agency Mortgage-Backed Securities [Member]	Dec. 31, 2013 Commercial Paper [Member]	Dec. 31, 2013 Available-For-Sale Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
LPSC authorized storm reserve funding			$ 50,000,000
Amount of restricted cash and cash equivalents transfered to an investment manager		13,000,000
Reconciliation of available-for-sale debt securities from amortized cost to fair value[Abstract]
Amortized Cost				9,838,000	513,000	1,000,000	1,483,000	12,834,000
Total Unrealized Gains				8,000	2,000	0	0	10,000
Total Unrealized Losses				15,000	0	0	0	15,000
Fair Value				9,831,000	515,000	1,000,000	1,483,000	12,829,000
Realized gain on available-for-sale debt securities, less than	$ 100,000