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STOCKHOLDERS' EQUITY | 12 Months Ended
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Sep. 30, 2017
Stockholders' Equity Note [Abstract] |
STOCKHOLDERS' EQUITY | SHAREHOLDERS’ EQUITY Spire In 2014, Spire issued 2.875 million equity units as a portion of the Spire Alabama acquisition financing. The equity units were originally issued at $50 per unit pursuant to the Purchase Contract and Pledge Agreement (Purchase Contract) dated as of June 11, 2014 between Spire and U.S. Bank National Association, as purchase contract agent, collateral agent, custodial agent and securities intermediary. These units consisted of $143.8 aggregate principal amount of 2014 Series A 2.00% remarketable junior subordinated notes due 2022 and the Purchase Contract obligating the holder to purchase common shares at a future settlement date. The equity unit investments were effectively replaced as planned in a series of transactions outlined in Note 6, resulting in the issuance of 2,504,684 shares of the Company’s common stock at a purchase price of $57.3921 per share. Under the contract terms, the equity units were converted to common stock at the rate of 0.8712 shares per unit, with a corresponding adjustment to purchase price. Spire filed a registration statement on Form S-3 with the US Securities and Exchange Commission (SEC) on June 15, 2017 for the issuance and sale of up to 250,000 shares of its common stock under its Dividend Reinvestment and Direct Stock Purchase Plan. There were 244,130 and 239,945 shares at September 30, 2017 and November 10, 2017, respectively, remaining available for issuance under this Form S-3. On May 17, 2016, Spire completed a public offering of 2,185,000 shares of its common stock, generating $133.2 of proceeds net of issuance costs. On September 23, 2016, Spire and Spire Missouri filed with the SEC a joint shelf registration statement on Form S-3 for issuance of various types of debt and equity securities, which registration statement will expire September 22, 2019. The amount, timing, and type of additional financing to be issued under this shelf registration statement will depend on cash requirements and market conditions. At September 30, 2017 and 2016, Spire had authorized 5,000,000 shares of preferred stock, but none were issued and outstanding. Spire Missouri Substantially all of Spire Missouri’s plant is subject to the liens of its first mortgage bonds. The mortgage contains several restrictions on Spire Missouri’s ability to pay cash dividends on its common stock or to make loans to its parent company. These mortgage restrictions are applicable regardless of whether the stock is publicly held or held solely by Spire Missouri’s parent company. Under the most restrictive of these provisions, no cash dividend may be declared or paid if, after the dividend, the aggregate net amount spent for all dividends after September 30, 1953 would exceed a maximum amount determined by a formula set out in the mortgage. Under that formula, the maximum amount is the sum of $8.0 plus earnings applicable to common stock (adjusted for stock repurchases and issuances) for the period from September 30, 1953 to the last day of the quarter before the declaration or payment date for the dividends. As of September 30, 2017 and 2016, the amount under the mortgage’s formula that was available to pay dividends was $1,010.8 and $916.8, respectively. Thus, all of Spire Missouri’s retained earnings were free from such dividend restrictions as of those dates. On September 23, 2016, Spire and Spire Missouri filed with the SEC a joint shelf registration statement on Form S-3 for issuance of various types of debt and equity securities, which registration statement will expire September 22, 2019. The amount, timing, and type of additional financing to be issued under this shelf registration statement will depend on cash requirements and market conditions, as well as future MoPSC authorizations. Spire Missouri has authority from the MoPSC to issue debt securities and preferred stock, including on a private placement basis, as well as to issue common stock, receive paid-in capital, and enter into capital lease agreements, all for a total of up to $300.0. On September 15, 2017, Spire Missouri issued $170.0 in first mortgage bonds, leaving $130.0 available under the MoPSC authorization. At September 30, 2017 and 2016, Spire Missouri had authorized 1,480,000 shares of preferred stock, but none were issued and outstanding. Spire Alabama At September 30, 2017 and 2016, Spire Alabama had authorized 120,000 shares of preferred stock, but none were issued and outstanding. Other Comprehensive Income The components of accumulated other comprehensive income (loss), net of income taxes, recognized in the balance sheets at September 30 were as follows:
|  | Net Unrealized Gains (Losses) on Cash Flow Hedges |  | Defined Benefit Pension and Other Postretirement Benefit Plans |  | Net Unrealized Losses on Available for Sale Securities |  | Total
Spire |  |  |  |  |  |  |  |
Balance at September 30, 2015 |  | $ | (0.4 | ) |  | $ | (1.5 | ) |  | $ | (0.1 | ) |  | $ | (2.0 | )
Other comprehensive loss |  | (1.9 | ) |  | (0.3 | ) |  | — |  |  | (2.2 | )
Balance at September 30, 2016 |  | (2.3 | ) |  | (1.8 | ) |  | (0.1 | ) |  | (4.2 | )
Other comprehensive income (loss) |  | 7.2 |  |  | 0.3 |  |  | (0.1 | ) |  | 7.4 |
Balance at September 30, 2017 |  | $ | 4.9 |  |  | $ | (1.5 | ) |  | $ | (0.2 | ) |  | $ | 3.2 |
Spire Missouri |  |  |  |  |  |  |  |
Balance at September 30, 2015 |  | (0.2 | ) |  | (1.5 | ) |  | — |  |  | $ | (1.7 | )
Other comprehensive income (loss) |  | 0.3 |  |  | (0.3 | ) |  | (0.1 | ) |  | (0.1 | )
Balance at September 30, 2016 |  | 0.1 |  |  | (1.8 | ) |  | (0.1 | ) |  | (1.8 | )
Other comprehensive income (loss) |  | — |  |  | 0.2 |  |  | (0.1 | ) |  | 0.1 |
Balance at September 30, 2017 |  | $ | 0.1 |  |  | $ | (1.6 | ) |  | $ | (0.2 | ) |  | $ | (1.7 | )
Income tax expense (benefit) recorded for items of other comprehensive income (loss) reported in the statements of comprehensive income is calculated by applying statutory federal, state, and local income tax rates applicable to ordinary income. The tax rates applied to individual items of other comprehensive income (loss) are similar within each reporting period. For the periods presented, Spire Alabama had no accumulated other comprehensive income (loss) balances.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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