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Schedule I - Cash Dividends Received from Subsidiaries (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
WECI |  |  |
Notes to parent company financial statements |  |  |
Return of capital from subsidiaries | $ 171.6 | $ 363.7 | $ 164.1
ATC Holding LLC |  |  |
Notes to parent company financial statements |  |  |
Return of capital from subsidiaries |  |  | 32.0
Wispark |  |  |
Notes to parent company financial statements |  |  |
Return of capital from subsidiaries | 3.6 | 9.2 |
WEC Energy Group |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 935.7 | 1,035.6 | 795.7
Return of capital from subsidiaries | 175.2 | 372.9 | 196.1
WEC Energy Group | WE |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 370.0 | 630.0 | 360.0
WEC Energy Group | We Power |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 192.8 | 158.5 | 217.9
WEC Energy Group | WG |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 171.0 | 60.0 | 30.0
WEC Energy Group | WECI |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 93.7 | 87.7 | 46.4
WEC Energy Group | ATC Holding LLC |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 86.8 | 74.9 | 106.4
WEC Energy Group | UMERC |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 21.0 | 17.0 | 0.0
WEC Energy Group | Wispark |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | 0.4 | 7.5 | 0.0
WEC Energy Group | Bluewater |  |  |
Notes to parent company financial statements |  |  |
Cash dividends received from subsidiaries | $ 0.0 | $ 0.0 | $ 35.0

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