Debt - Principal Amounts Payable Under Finance Lease Agreement (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Years ending Dec. 31,
2024	$ 925
2025	1,023
2026	1,133
2027	1,253
2028	1,388
Thereafter	7,249
Cleco Power
Years ending Dec. 31,
2024	925
2025	1,023
2026	1,133
2027	1,253
2028	1,388
Thereafter	$ 7,249

Finance Lease Liability, Principal Only, To Be Paid, After Year Five

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Finance Lease Liability, Principal Only, To Be Paid, Year Five

No definition available.

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Finance Lease Liability, Principal Only, To Be Paid, Year Four

No definition available.

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Finance Lease, Liability, Principal Only, To Be Paid, Year One

No definition available.

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Finance Lease Liability, Principal Only, To Be Paid, Year Three

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Finance Lease, Liability, Principal Only, To Be Paid, Year Two

No definition available.

Name:	cnl_FinanceLeaseLiabilityPrincipalOnlyToBePaidYearTwo
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Balance Type:	credit
Period Type:	instant

No definition available.

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Balance Type:	na
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Period Type: