v3.26.1
CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Millions
Jun. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
ASSETS      
Utility Plant $ 12,032.6 $ 9,330.4 $ 9,232.8
Less: Accumulated depreciation and amortization 3,107.9 2,577.4 2,571.8
Net Utility Plant 8,924.7 6,753.0 6,661.0
Non-utility Property (net of accumulated depreciation and amortization of $124.7, $106.6 and $100.5 at June 30, 2026, September 30, 2025, and June 30, 2025, respectively) 553.4 568.1 572.3
Other Investments 131.8 126.6 124.1
Total Other Property and Investments 685.2 694.7 696.4
Current Assets:      
Cash and cash equivalents 20.7 5.7 13.1
Accounts receivable:      
Utility 228.8 191.9 228.0
Other 47.1 47.2 46.1
Allowance for credit losses (30.4) (28.8) (33.8)
Delayed customer billings 29.5 13.6 18.3
Inventories:      
Natural gas 155.7 192.8 133.0
Propane gas 8.6 8.6 8.6
Materials and supplies 45.4 47.0 46.5
Regulatory assets 78.6 78.3 35.0
Prepayments 63.6 46.1 58.7
Other 60.9 22.8 26.7
Assets held for sale 81.4 182.7 199.9
Total Current Assets 789.9 807.9 780.1
Deferred Charges and Other Assets:      
Goodwill 1,895.2 1,171.6 1,171.6
Regulatory assets 1,395.0 1,323.5 1,293.4
Other 401.4 378.7 347.7
Assets held for sale 0.0 445.9 446.1
Total Deferred Charges and Other Assets 3,691.6 3,319.7 3,258.8
Total Assets 14,091.4 11,575.3 11,396.3
Capitalization:      
Common stock (par value $1.00 per share; 70.0 million shares authorized; 59.1 million, 59.0 million, and 59.0 million shares issued and outstanding at June 30, 2026, September 30, 2025, and June 30, 2025, respectively) 59.1 59.0 59.0
Paid-in capital 1,984.9 1,981.4 1,979.2
Retained earnings 1,515.9 1,087.6 1,179.5
Accumulated other comprehensive income (loss) 23.1 19.4 20.5
Total Shareholders' Equity 3,583.0 3,389.4 3,480.2
Temporary equity 4.4 6.1 5.2
Long-term debt (less current portion) 5,758.0 3,369.4 3,498.4
Total Capitalization 9,345.4 6,764.9 6,983.8
Current Liabilities:      
Current portion of long-term debt 238.1 487.5 392.5
Notes payable 1,263.5 1,317.0 1,009.5
Accounts payable 194.4 156.3 140.2
Advance customer billings 17.0 58.1 29.4
Wages and compensation accrued 41.4 49.2 35.4
Customer deposits 38.8 32.8 32.6
Taxes accrued 100.9 107.5 90.8
Regulatory liabilities 11.3 39.4 48.6
Other 219.2 176.5 175.1
Liabilities associated with assets held for sale 7.9 124.2 132.4
Total Current Liabilities 2,132.5 2,548.5 2,086.5
Deferred Credits and Other Liabilities:      
Deferred income taxes 1,054.6 887.4 900.5
Pension and postretirement benefit costs 43.1 74.7 105.0
Asset retirement obligations 596.9 577.7 593.0
Regulatory liabilities 777.6 578.0 582.0
Other 141.3 136.7 138.4
Liabilities associated with assets held for sale 0.0 7.4 7.1
Total Deferred Credits and Other Liabilities 2,613.5 2,261.9 2,326.0
Commitments and Contingencies (Note 13)
Total Capitalization and Liabilities 14,091.4 11,575.3 11,396.3
Depositary Shares [Member]      
Capitalization:      
Preferred stock ($25.00 par value per share; 10.0 million depositary shares authorized, issued and outstanding at September 30, 2025 and June 30, 2025) 0.0 242.0 242.0
Spire Missouri [Member]      
ASSETS      
Utility Plant 6,246.9 5,864.3 5,793.3
Less: Accumulated depreciation and amortization 1,190.9 1,104.6 1,089.8
Net Utility Plant 5,056.0 4,759.7 4,703.5
Total Other Property and Investments 76.7 75.8 73.6
Accounts receivable:      
Other 26.3 34.0 33.0
Allowance for credit losses (22.9) (23.0) (27.9)
Delayed customer billings 25.3 4.2 14.2
Inventories:      
Natural gas 100.6 150.0 99.1
Propane gas 8.6 8.6 8.6
Materials and supplies 23.5 24.5 23.4
Regulatory assets 7.7 48.9 8.7
Prepayments 39.2 28.2 37.3
Other 0.5 0.0 0.0
Total Current Assets 368.1 426.7 363.6
Deferred Charges and Other Assets:      
Goodwill 210.2 210.2 210.2
Regulatory assets 669.2 653.2 613.5
Other 198.7 224.2 194.6
Total Deferred Charges and Other Assets 1,078.1 1,087.6 1,018.3
Total Assets 6,578.9 6,349.8 6,159.0
Capitalization:      
Paid-in capital and common stock 929.3 929.3 929.3
Retained earnings 1,424.4 1,239.1 1,264.1
Accumulated other comprehensive income (loss) (0.6) (0.7) (1.3)
Total Shareholders' Equity 2,353.1 2,167.7 2,192.1
Long-term debt (less current portion) 2,153.6 1,953.6 1,953.2
Total Capitalization 4,506.7 4,121.3 4,145.3
Current Liabilities:      
Advance customer billings 7.7 43.2 19.1
Wages and compensation accrued 21.0 27.0 19.8
Customer deposits 7.2 7.2 7.0
Taxes accrued 57.2 65.8 53.0
Regulatory liabilities 3.5 13.9 14.0
Other 62.3 64.3 51.6
Total Current Liabilities 692.7 908.0 663.9
Deferred Credits and Other Liabilities:      
Deferred income taxes 651.4 598.7 603.6
Pension and postretirement benefit costs 42.7 72.4 85.0
Asset retirement obligations 98.5 95.5 98.6
Regulatory liabilities 509.5 481.3 491.1
Other 77.4 72.6 71.5
Total Deferred Credits and Other Liabilities 1,379.5 1,320.5 1,349.8
Commitments and Contingencies (Note 13)
Total Capitalization and Liabilities 6,578.9 6,349.8 6,159.0
Spire Missouri [Member] | Nonrelated Party [Member]      
Accounts receivable:      
Utility 157.3 149.1 164.9
Current Liabilities:      
Accounts payable 80.2 98.9 90.8
Spire Missouri [Member] | Related Party [Member]      
Accounts receivable:      
Utility 2.0 2.2 2.3
Current Liabilities:      
Notes payable 443.5 566.3 398.7
Accounts payable 10.1 21.4 9.9
Spire Alabama Inc [Member]      
ASSETS      
Utility Plant 3,173.7 3,052.9 3,042.8
Less: Accumulated depreciation and amortization 1,416.9 1,362.4 1,370.8
Net Utility Plant 1,756.8 1,690.5 1,672.0
Total Other Property and Investments 0.1 0.1 0.1
Current Assets:      
Cash and cash equivalents 2.8 1.9 1.7
Accounts receivable:      
Other 5.9 6.9 6.2
Allowance for credit losses (4.9) (4.9) (5.1)
Delayed customer billings 3.9 9.0 3.9
Inventories:      
Natural gas 43.8 39.4 31.1
Materials and supplies 18.8 19.0 19.3
Regulatory assets 25.8 16.1 13.2
Prepayments 8.8 7.7 9.4
Other 0.2 0.0 0.0
Total Current Assets 150.2 129.9 133.3
Deferred Charges and Other Assets:      
Regulatory assets 667.6 650.6 659.6
Other 100.6 99.2 94.8
Total Deferred Charges and Other Assets 768.2 749.8 754.4
Total Assets 2,675.3 2,570.3 2,559.8
Capitalization:      
Paid-in capital and common stock 236.3 242.9 242.9
Retained earnings 790.3 735.2 745.1
Total Shareholders' Equity 1,026.6 978.1 988.0
Long-term debt (less current portion) 712.0 711.7 711.6
Total Capitalization 1,738.6 1,689.8 1,699.6
Current Liabilities:      
Current portion of long-term debt 0.0 0.0 35.0
Advance customer billings 8.1 13.1 8.4
Wages and compensation accrued 6.2 7.8 5.6
Customer deposits 23.7 22.3 22.3
Taxes accrued 30.2 33.1 30.6
Regulatory liabilities 1.9 20.3 29.3
Other 12.4 14.6 11.9
Total Current Liabilities 302.1 290.0 248.1
Deferred Credits and Other Liabilities:      
Deferred income taxes 97.1 64.1 65.9
Pension and postretirement benefit costs 0.2 2.4 11.1
Asset retirement obligations 485.4 470.0 483.9
Regulatory liabilities 28.0 29.2 25.8
Other 23.9 24.8 25.4
Total Deferred Credits and Other Liabilities 634.6 590.5 612.1
Total Capitalization and Liabilities 2,675.3 2,570.3 2,559.8
Spire Alabama Inc [Member] | Nonrelated Party [Member]      
Accounts receivable:      
Utility 45.0 34.8 53.5
Current Liabilities:      
Accounts payable 45.5 43.3 43.6
Spire Alabama Inc [Member] | Related Party [Member]      
Accounts receivable:      
Utility 0.1   0.1
Current Liabilities:      
Notes payable 168.2 130.1 56.4
Accounts payable $ 5.9 $ 5.4 $ 5.0