Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Gross amount of debt extinguished.

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No definition available.

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The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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LONG-TERM DEBT (Details) - USD ($) $ in Millions	1 Months Ended
LONG-TERM DEBT (Details) - USD ($) $ in Millions	Aug. 31, 2023	Apr. 30, 2023	Mar. 31, 2023	Jan. 31, 2023
Integrys Holding \| Integrys Holding Inc Junior Notes Due 2073
Debt Instrument [Line Items]
Unsecured debt			$ 221.4
Interest rate on long-term debt			6.00%
Extinguishment of debt			$ 18.9
Early repayment of long-term debt			$ 18.6
Integrys Holding \| Integrys Holding Inc Junior Notes Due 2073 \| Subsequent event
Debt Instrument [Line Items]
Interest rate on long-term debt	6.00%
Extinguishment of debt	$ 202.5
WEC Energy Group \| WEC 4.75% Senior Notes due January 9, 2026
Debt Instrument [Line Items]
Proceeds from issuance of debt		$ 350.0		$ 650.0
Interest rate on long-term debt		4.75%		4.75%
WEC Energy Group \| WEC 4.75% $450M Senior Notes due January 15, 2028
Debt Instrument [Line Items]
Proceeds from issuance of debt				$ 450.0
Interest rate on long-term debt				4.75%
WEC Energy Group \| Floating Rate WEC Energy Group Junior Notes Due 2067 \| Subsequent event
Debt Instrument [Line Items]
Unsecured debt	$ 500.0
Debt Instrument, Basis Spread on Variable Rate	0.26161%