Schedule I - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Notes to parent company financial statements
Cash received for income taxes, net	$ 33.8	$ 27.9	$ (24.9)
WEC Energy Group
Notes to parent company financial statements
Cash paid for interest	70.2	98.5	117.7
Cash received for income taxes, net	$ (27.9)	$ (61.5)	$ (4.9)

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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