LEASES - LAND LEASES - UTILITY SOLAR GENERATION (Details) - Darien Solar Park $ in Millions	Sep. 30, 2023 USD ($)
WE
Leases
Joint plant ownership percentage	75.00%
WPS
Leases
Joint plant ownership percentage	15.00%
WE and WPS
Leases
Lease initial term	25 years
Renewal term	25 years
Finance lease obligations	$ 40.3
Finance lease right of use asset	$ 39.2
Weighted average discount rate - finance leases	5.96%

Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount, after accumulated amortization, of right-of-use asset from finance lease.

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

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- Definition

The proportionate share of interest (percent) in a jointly owned utility plant.

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- Definition

Term of lessee's finance lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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