Regulatory Environment - WI 2023 and 2024 Rates (Details) - Public Service Commission of Wisconsin (PSCW) - 2023 and 2024 Rates	1 Months Ended
Dec. 31, 2022 USD ($)
Public Utilities, General Disclosures
Percentage of first 15 basis points of additional earnings retained by the utility	100.00%
Return on equity in excess of authorized amount (as a percent)	0.15%
Percentage of additional earnings between 15 and 75 basis points refunded to customers	50.00%
Return on equity in excess of first 15 basis points above authorized amount (as a percent)	0.60%
Percentage of earnings in excess of 75 basis points refunded to customers	100.00%
Commitments to contribute to Keep Wisconsin Warm Fund	$ 4,000,000
WE
Public Utilities, General Disclosures
Approved return on equity (as a percent)	9.80%
Approved common equity component average (as a percent)	53.00%
Decrease in certain customer fixed charges	$ 1.00
WE \| Electric
Public Utilities, General Disclosures
Approved rate increase	$ 283,500,000
Approved rate increase (as a percent)	9.10%
WE \| Natural gas
Public Utilities, General Disclosures
Approved rate increase	$ 46,100,000
Approved rate increase (as a percent)	9.60%
WE \| Steam
Public Utilities, General Disclosures
Approved rate increase	$ 7,600,000
Approved rate increase (as a percent)	35.30%
WPS
Public Utilities, General Disclosures
Approved return on equity (as a percent)	9.80%
Approved common equity component average (as a percent)	53.00%
Decrease in certain customer fixed charges	$ 3.33
WPS \| Electric
Public Utilities, General Disclosures
Approved rate increase	$ 120,500,000
Approved rate increase (as a percent)	9.80%
WPS \| Natural gas
Public Utilities, General Disclosures
Approved rate increase	$ 26,400,000
Approved rate increase (as a percent)	7.10%
WG
Public Utilities, General Disclosures
Approved return on equity (as a percent)	9.80%
Approved common equity component average (as a percent)	53.00%
WG \| Natural gas
Public Utilities, General Disclosures
Approved rate increase	$ 46,500,000
Approved rate increase (as a percent)	6.40%

Percentage of public utility's approved equity to capital, including debt and equity.

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Amount of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved rate increase (decrease) by regulatory agency.

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Percentage of public utility's approved return on equity.

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Amount of WE's and WPS's combined commitment to contribute to the Keep Wisconsin Warm Fund.

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Decrease from currently authorized rates to the monthly residential and small commercial customer fixed charges

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Percentage of utility earnings in excess of 15 basis points above the utility’s authorized return on equity (ROE), but not exceeding 75 basis points above the authorized ROE, that will be refunded to customers.

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Percentage of first 15 basis points of additional earnings retained by the utility

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Percentage of utility earnings in excess of 75 basis points above the utility’s authorized return on equity (ROE) that will be refunded to customers.

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Return on equity (ROE) in excess of the first 15 basis points above the authorized amount, for which a percentage will be returned to customers.

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Return on equity (ROE) in excess of authorized amount, for which the additional earnings will be retained by the utility.

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