Recent Authoritative Guidance (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets	$ 15,327
Lease liabilities	15,319
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets		$ 16,100
Lease liabilities		16,100
CLECO POWER
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets	15,007
Lease liabilities	$ 15,007
CLECO POWER | Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use assets		15,900
Lease liabilities		$ 15,900