CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Operating Activities:
Net Income	$ 116.0	$ 45.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	40.4	37.8
Deferred income taxes and investment tax credits	(33.6)	22.1
Changes in assets and liabilities:
Accounts receivable	(176.7)	(186.8)
Unamortized purchased gas adjustments	34.6	5.1
Accounts payable	(2.1)	85.5
Delayed/advance customer billings – net	(8.7)	(13.7)
Taxes accrued	(25.0)	(16.9)
Inventories	20.9	11.8
Other assets and liabilities	50.3	18.5
Other	1.8	1.7
Net cash provided by operating activities	17.9	10.3
Investing Activities:
Capital expenditures	(110.8)	(89.3)
Business acquisitions	(16.0)	3.8
Other	0.1	(0.4)
Net cash used in investing activities	(126.7)	(85.9)
Financing Activities:
Issuance of long-term debt	30.0	0.0
Issuance of short-term debt – net	106.3	107.7
Issuance of common stock	0.3	0.1
Dividends paid	(25.8)	(22.8)
Other	(2.7)	(4.0)
Net cash provided by financing activities	108.1	81.0
Net (Decrease) Increase in Cash and Cash Equivalents	(0.7)	5.4
Cash and Cash Equivalents at Beginning of Period	7.4	5.2
Cash and Cash Equivalents at End of Period	6.7	10.6
Supplemental disclosure of cash (paid) refunded for:
Interest, net of amounts capitalized	(13.3)	(14.3)
Income taxes	0.0	(0.1)
Spire Missouri
Operating Activities:
Net Income	89.4	38.0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	24.8	22.7
Deferred income taxes and investment tax credits	(25.0)	16.9
Changes in assets and liabilities:
Accounts receivable	(143.0)	(136.0)
Unamortized purchased gas adjustments	28.8	17.2
Accounts payable	1.6	50.3
Delayed/advance customer billings – net	(6.9)	(14.0)
Taxes accrued	(21.7)	(12.6)
Inventories	9.9	9.0
Other assets and liabilities	40.7	16.7
Other	1.1	0.5
Net cash provided by operating activities	(0.3)	8.7
Investing Activities:
Capital expenditures	(70.5)	(61.2)
Other	(0.2)	0.1
Net cash used in investing activities	(70.7)	(61.1)
Financing Activities:
Issuance of short-term debt – net	0.0	69.2
Borrowings from Spire – net	72.6	0.0
Dividends paid	0.0	(14.0)
Other	0.0	(0.9)
Net cash provided by financing activities	72.6	54.3
Net (Decrease) Increase in Cash and Cash Equivalents	1.6	1.9
Cash and Cash Equivalents at Beginning of Period	2.5	2.1
Cash and Cash Equivalents at End of Period	4.1	4.0
Supplemental disclosure of cash (paid) refunded for:
Interest, net of amounts capitalized	(7.6)	(7.9)
Income taxes	0.0	0.0
Spire Alabama
Operating Activities:
Net Income	(49.6)	10.3
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12.8	12.3
Deferred income taxes and investment tax credits	65.0	6.3
Changes in assets and liabilities:
Accounts receivable	(44.3)	(28.1)
Unamortized purchased gas adjustments	5.8	(11.5)
Accounts payable	14.9	17.0
Delayed/advance customer billings – net	(1.8)	0.3
Taxes accrued	(1.4)	(2.7)
Inventories	7.7	5.9
Other assets and liabilities	0.0	(1.1)
Other	0.0	0.3
Net cash provided by operating activities	9.1	9.0
Investing Activities:
Capital expenditures	(24.9)	(21.8)
Other	0.0	(0.6)
Net cash used in investing activities	(24.9)	(22.4)
Financing Activities:
Issuance of long-term debt	30.0	0.0
Issuance of short-term debt – net	0.0	20.5
Repayment of borrowings from Spire – net	(6.8)	0.0
Dividends paid	(7.5)	(6.7)
Other	0.0	(0.4)
Net cash provided by financing activities	15.7	13.4
Net (Decrease) Increase in Cash and Cash Equivalents	(0.1)	0.0
Cash and Cash Equivalents at Beginning of Period	0.1	0.0
Cash and Cash Equivalents at End of Period	0.0	0.0
Supplemental disclosure of cash (paid) refunded for:
Interest, net of amounts capitalized	(3.4)	(3.1)
Income taxes	$ 0.0	$ 0.0