Debt - Principal Amounts Payable Under Finance Lease Agreement (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Years ending Dec. 31,
2023	$ 836
2024	925
2025	1,023
2026	1,133
2027	1,253
Thereafter	8,637
Cleco Power
Years ending Dec. 31,
2023	836
2024	925
2025	1,023
2026	1,133
2027	1,253
Thereafter	$ 8,637

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

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Balance Type:	credit
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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

No definition available.

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

No definition available.

Name:	cnl_FinanceLeaseLiabilityPrincipalOnlyToBePaidYearTwo
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	us-gaap_FinanceLeaseLiabilitiesPaymentsDueAbstract
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Balance Type:	na
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Balance Type:
Period Type: