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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Millions | Dec. 31, 2017 | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | --- | ---
ASSETS |  |  |
Utility Plant | $ 5,351.7 | $ 5,278.4 | $ 4,893.2
Less: Accumulated depreciation and amortization | 1,641.0 | 1,613.2 | 1,561.4
Net Utility Plant | 3,710.7 | 3,665.2 | 3,331.8
Non-utility Property (net of accumulated depreciation and amortization of $8.6, $8.6 and $8.2 at December 31, 2017, September 30, 2017, and December 31, 2016, respectively) | 105.3 | 52.0 | 19.7
Goodwill | 1,171.6 | 1,171.6 | 1,161.4
Other Investments | 66.3 | 64.2 | 61.9
Total Other Property and Investments | 1,343.2 | 1,287.8 | 1,243.0
Current Assets: |  |  |
Cash and cash equivalents | 6.7 | 7.4 | 10.6
Accounts receivable: |  |  |
Utility | 333.6 | 140.5 | 310.4
Other | 135.3 | 149.2 | 133.4
Allowance for doubtful accounts | (21.3) | (18.3) | (21.1)
Delayed customer billings | 7.5 | 3.4 | 5.3
Inventories: |  |  |
Natural gas | 171.6 | 194.9 | 161.9
Propane gas | 12.0 | 12.0 | 12.0
Materials and supplies | 21.3 | 18.9 | 16.6
Natural gas receivable | 3.5 | 1.9 | 8.4
Derivative instrument assets | 4.7 | 5.9 | 18.7
Unamortized purchased gas adjustments | 77.9 | 102.6 | 52.2
Other regulatory assets | 71.4 | 72.9 | 82.3
Prepayments and other | 28.3 | 34.2 | 24.9
Total Current Assets | 852.5 | 725.5 | 815.6
Deferred Charges: |  |  |
Regulatory assets | 716.6 | 791.1 | 786.4
Other | 78.1 | 77.1 | 133.3
Total Deferred Charges | 794.7 | 868.2 | 919.7
Total Assets | 6,701.1 | 6,546.7 | 6,310.1
Capitalization: |  |  |
Common stock (par value $1.00 per share; 70.0 million shares authorized; 48.3 million, 48.3 million and 45.7 million shares issued and outstanding at December 31, 2017, September 30, 2017 and December 31, 2016, respectively) | 48.3 | 48.3 | 45.7
Paid-in capital | 1,324.9 | 1,325.6 | 1,175.7
Retained earnings | 703.0 | 614.2 | 572.1
Accumulated other comprehensive income | 3.0 | 3.2 | 3.2
Total Equity | 2,079.2 | 1,991.3 | 1,796.7
Noncontrolling interest | 6.5 | 0.0 | 0.0
Total Equity | 2,085.7 | 1,991.3 | 1,796.7
Long-term debt (less current portion) | 2,030.0 | 1,995.0 | 1,821.3
Total Capitalization | 4,115.7 | 3,986.3 | 3,618.0
Current Liabilities: |  |  |
Current portion of long-term debt | 105.5 | 100.0 | 250.0
Notes payable | 583.6 | 477.3 | 506.4
Accounts payable | 245.6 | 257.1 | 273.8
Advance customer billings | 27.3 | 32.0 | 60.2
Wages and compensation accrued | 29.6 | 38.7 | 29.6
Dividends payable | 28.1 | 26.6 | 24.8
Customer deposits | 35.9 | 34.9 | 35.7
Interest accrued | 26.3 | 14.6 | 22.3
Taxes accrued | 36.0 | 61.0 | 39.7
Unamortized purchased gas adjustments | 1.0 | 1.0 | 1.4
Regulatory liabilities | 20.5 | 21.6 | 42.8
Other | 71.9 | 33.1 | 55.5
Total Current Liabilities | 1,211.3 | 1,097.9 | 1,342.2
Deferred Credits and Other Liabilities: |  |  |
Deferred income taxes | 441.0 | 707.5 | 636.5
Pension and postretirement benefit costs | 233.6 | 237.4 | 296.3
Asset retirement obligations | 299.7 | 296.6 | 208.7
Regulatory liabilities | 335.1 | 157.2 | 132.1
Other | 64.7 | 63.8 | 76.3
Total Deferred Credits and Other Liabilities | 1,374.1 | 1,462.5 | 1,349.9
Commitments and Contingencies (Note 10) |  |  |
Total Capitalization and Liabilities | 6,701.1 | 6,546.7 | 6,310.1
Spire Missouri |  |  |
ASSETS |  |  |
Utility Plant | 3,141.2 | 3,091.8 | 2,794.7
Less: Accumulated depreciation and amortization | 696.1 | 681.6 | 646.4
Net Utility Plant | 2,445.1 | 2,410.2 | 2,148.3
Goodwill | 210.2 | 210.2 | 210.2
Other Investments | 60.1 | 59.4 | 57.1
Total Other Property and Investments | 270.3 | 269.6 | 267.3
Current Assets: |  |  |
Cash and cash equivalents | 4.1 | 2.5 | 4.0
Accounts receivable: |  |  |
Utility | 238.3 | 101.7 | 221.0
Associated companies | 7.3 | 3.3 | 5.3
Other | 20.0 | 15.0 | 12.2
Allowance for doubtful accounts | (16.8) | (14.1) | (17.1)
Delayed customer billings | 7.5 | 3.4 | 5.3
Inventories: |  |  |
Natural gas | 127.1 | 138.2 | 118.2
Propane gas | 12.0 | 12.0 | 12.0
Materials and supplies | 12.5 | 11.3 | 9.3
Derivative instrument assets | 0.0 | 0.1 | 2.2
Unamortized purchased gas adjustments | 38.5 | 57.4 | 33.8
Other regulatory assets | 38.2 | 38.2 | 59.7
Prepayments and other | 15.6 | 19.6 | 15.5
Total Current Assets | 504.3 | 388.6 | 481.4
Deferred Charges: |  |  |
Regulatory assets | 484.1 | 557.8 | 543.4
Other | 5.6 | 5.3 | 2.4
Total Deferred Charges | 489.7 | 563.1 | 545.8
Total Assets | 3,709.4 | 3,631.5 | 3,442.8
Capitalization: |  |  |
Paid-in capital and common stock | 757.3 | 756.2 | 753.1
Retained earnings | 492.4 | 416.5 | 341.6
Accumulated other comprehensive income | (1.7) | (1.7) | (1.6)
Total Equity | 1,248.0 | 1,171.0 | 1,093.1
Long-term debt (less current portion) | 874.1 | 873.9 | 804.3
Total Capitalization | 2,122.1 | 2,044.9 | 1,897.4
Current Liabilities: |  |  |
Current portion of long-term debt | 100.0 | 100.0 | 0.0
Notes payable | 0.0 | 0.0 | 312.9
Notes payable – associated companies | 275.6 | 203.0 | 0.0
Accounts payable | 73.5 | 89.9 | 104.3
Accounts payable – associated companies | 8.9 | 5.4 | 9.4
Advance customer billings | 10.5 | 13.3 | 38.8
Wages and compensation accrued | 22.9 | 29.6 | 22.1
Dividends payable | 13.5 | 0.0 | 14.7
Customer deposits | 13.4 | 13.3 | 13.6
Interest accrued | 11.6 | 8.0 | 9.5
Taxes accrued | 12.3 | 34.1 | 16.4
Regulatory liabilities | 2.7 | 2.7 | 2.7
Other | 48.4 | 8.5 | 35.2
Total Current Liabilities | 593.3 | 507.8 | 579.6
Deferred Credits and Other Liabilities: |  |  |
Deferred income taxes | 382.2 | 623.8 | 578.2
Pension and postretirement benefit costs | 167.8 | 173.0 | 202.8
Asset retirement obligations | 160.3 | 158.6 | 76.1
Regulatory liabilities | 241.2 | 81.2 | 67.3
Other | 42.5 | 42.2 | 41.4
Total Deferred Credits and Other Liabilities | 994.0 | 1,078.8 | 965.8
Commitments and Contingencies (Note 10) |  |  |
Total Capitalization and Liabilities | 3,709.4 | 3,631.5 | 3,442.8
Spire Alabama |  |  |
ASSETS |  |  |
Utility Plant | 1,858.5 | 1,838.0 | 1,750.2
Less: Accumulated depreciation and amortization | 791.7 | 782.0 | 768.0
Net Utility Plant | 1,066.8 | 1,056.0 | 982.2
Current Assets: |  |  |
Cash and cash equivalents | 0.0 | 0.1 | 0.0
Accounts receivable: |  |  |
Utility | 74.7 | 32.0 | 77.5
Associated companies | 0.7 | 0.0 | 0.0
Other | 6.6 | 6.2 | 6.1
Allowance for doubtful accounts | (2.6) | (2.6) | (2.4)
Inventories: |  |  |
Natural gas | 25.1 | 33.9 | 28.4
Materials and supplies | 7.6 | 6.5 | 6.1
Unamortized purchased gas adjustments | 39.4 | 45.2 | 17.1
Other regulatory assets | 18.6 | 19.4 | 14.4
Prepayments and other | 7.7 | 6.7 | 5.4
Total Current Assets | 177.8 | 147.4 | 152.6
Deferred Charges: |  |  |
Regulatory assets | 197.4 | 197.0 | 229.5
Deferred income taxes | 119.0 | 185.6 | 215.1
Other | 57.4 | 57.0 | 61.8
Total Deferred Charges | 373.8 | 439.6 | 506.4
Total Assets | 1,618.4 | 1,643.0 | 1,641.2
Capitalization: |  |  |
Paid-in capital and common stock | 420.9 | 420.9 | 451.9
Retained earnings | 389.4 | 446.5 | 419.0
Total Equity | 810.3 | 867.4 | 870.9
Long-term debt (less current portion) | 277.8 | 247.8 | 247.7
Total Capitalization | 1,088.1 | 1,115.2 | 1,118.6
Current Liabilities: |  |  |
Notes payable | 0.0 | 0.0 | 102.5
Notes payable – associated companies | 163.1 | 169.9 | 0.0
Accounts payable | 55.0 | 44.4 | 48.7
Accounts payable – associated companies | 3.8 | 1.6 | 1.9
Advance customer billings | 16.8 | 18.6 | 21.4
Wages and compensation accrued | 5.4 | 7.4 | 5.7
Customer deposits | 18.7 | 17.9 | 18.8
Interest accrued | 3.5 | 3.3 | 3.4
Taxes accrued | 22.0 | 23.4 | 18.9
Regulatory liabilities | 11.3 | 12.0 | 37.4
Other | 2.4 | 2.9 | 5.0
Total Current Liabilities | 302.0 | 301.4 | 263.7
Deferred Credits and Other Liabilities: |  |  |
Pension and postretirement benefit costs | 51.5 | 50.2 | 75.6
Asset retirement obligations | 129.7 | 128.4 | 121.4
Regulatory liabilities | 39.0 | 39.6 | 40.6
Other | 8.1 | 8.2 | 21.3
Total Deferred Credits and Other Liabilities | 228.3 | 226.4 | 258.9
Total Capitalization and Liabilities | $ 1,618.4 | $ 1,643.0 | $ 1,641.2

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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),19) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.17) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The current portion of money or property received from customers which is either to be returned upon satisfactory contract completion or applied to customer receivables in accordance with the terms of the contract or the understandings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Sum of the carrying amounts of deferred costs that are expected to be recognized as a charge against earnings in periods after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.3(b).Q1(c)) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.3) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.3(b).Q2) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.3(b)) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 13.A.3(c).Q3) -URI http://asc.fasb.org/extlink&oid=65893310&loc=d3e214044-122780 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(11)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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