Fixed interest rate related to the interest rate derivative.

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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- Definition

Amount, before tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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- Definition

Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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- Definition

The number of interest rate swaps currently utilized by the company to hedge variable interest rate risk.

+ References

No definition available.

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DERIVATIVE INSTRUMENTS - CASH FLOW HEDGES (Details) $ in Millions	3 Months Ended
	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Nov. 15, 2021 USD ($) number_of_interest_rate_swaps
Derivative instruments
Interest expense	$ 117.6	$ 119.5
WEC Energy Group \| WEC Energy Group's junior subordinated notes due in 2067
Derivative instruments
Long-term debt outstanding			$ 500.0
WEC Energy Group \| Interest rate swaps
Derivative instruments
Number of interest rate swaps \| number_of_interest_rate_swaps			2
Interest rate swap notional value			$ 250.0
Interest rate swap fixed interest rate			4.9765%
Net derivative gain (loss) reclassified from accumulated other comprehensive loss to interest expense	0.1	$ (1.4)
Amount to be reclassified from accumulated other comprehensive loss to interest expense	$ 0.4