v3.25.4

Schedule I - Condensed Financial Information of Registrant (Condensed Statements of Income) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Operating Expenses |  |  |
Other operating expenses | $ (1,727) | $ (1,638) | $ (1,687)
Total operating expenses | (6,812) | (6,028) | (6,227)
Operating Loss | 1,727 | 1,487 | 1,235
Other Income (Expense) |  |  |
Equity earnings of subsidiaries | 5 | 7 | 7
Non-operating retirement benefits, net | 186 | 169 | 180
Other expense | (27) | (32) | (13)
Total other income | 310 | 344 | 362
Interest Charges |  |  |
Interest on long-term debt | 798 | 700 | 616
Total interest charges | 789 | 708 | 643
Income (Loss) Before Income Taxes | 1,248 | 1,123 | 954
Income Tax Expense | 246 | 176 | 147
Net Income | 1,071 | 1,003 | 887
Preferred Stock Dividends | 10 | 10 | 10
Net Income (Loss) Available to Common Stockholders | 1,061 | 993 | 877
Related Party |  |  |
Interest Charges |  |  |
Intercompany interest expense and other | 11 | 12 | 12
CMS Energy |  |  |
Operating Expenses |  |  |
Other operating expenses | 9 | 10 | 10
Total operating expenses | 9 | 10 | 10
Operating Loss | (9) | (10) | (10)
Other Income (Expense) |  |  |
Non-operating retirement benefits, net | (1) | (1) | (1)
Other income | 69 | 45 | 31
Other expense | (2) | 0 | 0
Total other income | 1,255 | 1,105 | 959
Interest Charges |  |  |
Interest on long-term debt | 266 | 205 | 201
Total interest charges | 276 | 215 | 211
Income (Loss) Before Income Taxes | 970 | 880 | 738
Income Tax Expense | (39) | (19) | (20)
Net Income | 1,009 | 899 | 758
Preferred Stock Dividends | 10 | 10 | 10
Net Income (Loss) Available to Common Stockholders | 999 | 889 | 748
CMS Energy | Related Party |  |  |
Other Income (Expense) |  |  |
Equity earnings of subsidiaries | 1,189 | 1,061 | 929
Interest Charges |  |  |
Intercompany interest expense and other | $ 10 | $ 10 | $ 10

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