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Credit Losses - Rollforward of Allowances (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | $ 198.3 | $ 220.1 | $ 140.0
Provision for credit losses | 86.1 | 75.7 | 102.9
Provision for credit losses deferred for future recovery or refund | 62.9 | (13.1) | 55.2
Write-offs charged against the allowance | (206.0) | (129.8) | (132.3)
Recovery of amounts previously written off | 58.0 | 45.4 | 54.4
Sale of PDL residential solar facilities |  |  | (0.1)
Balance at End of Year | 199.3 | 198.3 | 220.1
Change in allowance for credit losses | 1.0 |  |
Public utilities |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | 198.3 | 220.1 | 139.9
Provision for credit losses | 86.1 | 75.7 | 102.9
Provision for credit losses deferred for future recovery or refund | 62.9 | (13.1) | 55.2
Write-offs charged against the allowance | (206.0) | (129.8) | (132.3)
Recovery of amounts previously written off | 58.0 | 45.4 | 54.4
Sale of PDL residential solar facilities |  |  | 0.0
Balance at End of Year | 199.3 | 198.3 | 220.1
Wisconsin | Public utilities |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | 84.0 | 102.1 | 59.9
Provision for credit losses | 50.5 | 46.4 | 47.5
Provision for credit losses deferred for future recovery or refund | 29.7 | (16.6) | 24.6
Write-offs charged against the allowance | (117.0) | (74.8) | (65.9)
Recovery of amounts previously written off | 34.8 | 26.9 | 36.0
Sale of PDL residential solar facilities |  |  | 0.0
Balance at End of Year | 82.0 | 84.0 | 102.1
Illinois | Public utilities |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | 105.5 | 111.6 | 75.9
Provision for credit losses | 33.0 | 25.6 | 51.1
Provision for credit losses deferred for future recovery or refund | 33.2 | 3.5 | 30.6
Write-offs charged against the allowance | (82.6) | (52.5) | (63.0)
Recovery of amounts previously written off | 21.9 | 17.3 | 17.0
Sale of PDL residential solar facilities |  |  | 0.0
Balance at End of Year | 111.0 | 105.5 | 111.6
Other States | Public utilities |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | 8.8 | 6.4 | 4.1
Provision for credit losses | 2.6 | 3.7 | 4.3
Provision for credit losses deferred for future recovery or refund | 0.0 | 0.0 | 0.0
Write-offs charged against the allowance | (6.4) | (2.5) | (3.4)
Recovery of amounts previously written off | 1.3 | 1.2 | 1.4
Sale of PDL residential solar facilities |  |  | 0.0
Balance at End of Year | 6.3 | 8.8 | 6.4
Corporate and Other |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Balance at Beginning of Year | 0.0 | 0.0 | 0.1
Provision for credit losses | 0.0 | 0.0 | 0.0
Provision for credit losses deferred for future recovery or refund | 0.0 | 0.0 | 0.0
Write-offs charged against the allowance | 0.0 | 0.0 | 0.0
Recovery of amounts previously written off | 0.0 | 0.0 | 0.0
Balance at End of Year | $ 0.0 | $ 0.0 | 0.0
Corporate and Other | WPS Power Development, LLC Residential Solar Facilities |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |
Sale of PDL residential solar facilities |  |  | $ (0.1)

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