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CONDENSED CONSOLIDATED STATEMENTS OF COMMON SHAREHOLDER'S EQUITY (UNAUDITED) - USD ($) $ in Millions | Total | Common Stock Outstanding | Paid-in Capital | Retained Earnings | AOCI | Laclede Gas | Laclede Gas Common Stock Outstanding | Laclede Gas Paid-in Capital | Laclede Gas Retained Earnings | Laclede Gas AOCI | Alagasco | Alagasco Common Stock Outstanding | Alagasco Paid-in Capital | Alagasco Retained Earnings
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Sep. 30, 2015 | $ 1,573.6 | $ 43.3 | $ 1,038.1 | $ 494.2 | $ (2.0) | $ 1,037.8 | $ 0.1 | $ 748.2 | $ 291.2 | $ (1.7) | $ 874.6 | $ 0.0 | $ 480.9 | $ 393.7
Beginning Balance, (in shares) at Sep. 30, 2015 |  | 43,335,012 |  |  |  |  | 24,577 |  |  |  |  | 1,972,052 |  |
Stockholders' Equity Rollforward |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 46.9 |  |  | 46.9 |  | 39.4 |  |  | 39.4 |  | 9.9 |  |  | 9.9
Dividend reinvestment plan | 0.3 |  | 0.3 |  |  |  |  |  |  |  |  |  |  |
Dividend reinvestment plan (in shares) |  | 5,866 |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation costs | 1.7 |  | 1.7 |  |  | 1.2 |  | 1.2 |  |  |  |  |  |
Stock issued under stock-based compensation plans | 0.3 | $ 0.1 | 0.2 |  |  |  |  |  |  |  |  |  |  |
Stock issued under stock-based compensation plans (in shares) |  | 106,306 |  |  |  |  |  |  |  |  |  |  |  |
Employee’s tax withholding for stock-based compensation | (1.6) |  | (1.6) |  |  |  |  |  |  |  |  |  |  |
Employee's tax withholding for stock-based compensation (in shares) |  | (29,083) |  |  |  |  |  |  |  |  |  |  |  |
Return of capital to Spire |  |  |  |  |  |  |  |  |  |  | (9.0) |  | (9.0) |
Dividends declared | (21.2) |  |  | (21.2) |  | (21.2) |  |  | (21.2) |  | (7.5) |  |  | (7.5)
Other comprehensive income (loss), net of tax | 0.3 |  |  |  | 0.3 | 0.1 |  |  |  | 0.1 |  |  |  |
Ending Balance at Dec. 31, 2015 | 1,600.3 | $ 43.4 | 1,038.7 | 519.9 | (1.7) | 1,057.3 | $ 0.1 | 749.4 | 309.4 | (1.6) | 868.0 | $ 0.0 | 471.9 | 396.1
Ending Balance, (in shares) at Dec. 31, 2015 |  | 43,418,101 |  |  |  |  | 24,577 |  |  |  |  | 1,972,052 |  |
Beginning Balance at Sep. 30, 2016 | 1,768.2 | $ 45.6 | 1,175.9 | 550.9 | (4.2) | 1,068.5 | $ 0.1 | 751.9 | 318.3 | (1.8) | 867.3 | $ 0.0 | 451.9 | 415.4
Beginning Balance, (in shares) at Sep. 30, 2016 |  | 45,650,642 |  |  |  |  | 24,577 |  |  |  |  | 1,972,052 |  |
Stockholders' Equity Rollforward |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 45.2 |  |  | 45.2 |  | 38.0 |  |  | 38.0 |  | 10.3 |  |  | 10.3
Dividend reinvestment plan | 0.3 |  | 0.3 |  |  |  |  |  |  |  |  |  |  |
Dividend reinvestment plan (in shares) |  | 5,610 |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation costs | 1.7 |  | 1.7 |  |  | 1.1 |  | 1.1 |  |  |  |  |  |
Stock issued under stock-based compensation plans | 0.0 | $ 0.1 | (0.1) |  |  |  |  |  |  |  |  |  |  |
Stock issued under stock-based compensation plans (in shares) |  | 110,136 |  |  |  |  |  |  |  |  |  |  |  |
Employee’s tax withholding for stock-based compensation | (2.1) |  | (2.1) |  |  |  |  |  |  |  |  |  |  |
Employee's tax withholding for stock-based compensation (in shares) |  | (33,615) |  |  |  |  |  |  |  |  |  |  |  |
Dividends declared | (24.0) |  |  | (24.0) |  | (14.7) |  |  | (14.7) |  | (6.7) |  |  | (6.7)
Other comprehensive income (loss), net of tax | 7.4 |  |  |  | 7.4 | 0.2 |  |  |  | 0.2 |  |  |  |
Ending Balance at Dec. 31, 2016 | $ 1,796.7 | $ 45.7 | $ 1,175.7 | $ 572.1 | $ 3.2 | $ 1,093.1 | $ 0.1 | $ 753.0 | $ 341.6 | $ (1.6) | $ 870.9 | $ 0.0 | $ 451.9 | $ 419.0
Ending Balance, (in shares) at Dec. 31, 2016 |  | 45,732,773 |  |  |  |  | 24,577 |  |  |  |  | 1,972,052 |  |

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