Leases - Finance Lease (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 30, 2018
Lessee, Lease, Description [Line Items]
Net finance lease asset	$ 0	$ 10,360
CLECO POWER
Lessee, Lease, Description [Line Items]
Finance lease, loaned amount to purchase the barges		12,900		$ 16,800
Finance lease, on barges		16,800
Accumulated amortization		6,400
Net finance lease asset		10,400
Gain on measurement recorded as a reduction to accumulated deferred fuel asset	2,200
Finance lease assets, operating lease obligation recognized	400
Finance lease, principal interest	2,000	2,200	$ 2,200
Sublease income	$ 700	$ 2,600	$ 600