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STATEMENT OF CONSOLIDATED CAPITALIZATION (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Common Stock Equity:
Common stock, par value $1 per share: Authorized - 2013 and 2012, 70,000,000 shares Issued - 2013, 32,696,836 shares; and 2012, 22,539,431 shares	$ 32,697	$ 22,539
Paid-in capital	594,269	168,607
Retained earnings	420,103	414,581
Accumulated other comprehensive loss	(787)	(4,116)
Total Common Stock Equity	1,046,282	601,611
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	915,000	340,000
Unamortized discount, net of premium, on long-term debt	(2,288)	(584)
Total Long-Term Debt - Laclede Gas	912,712	339,416
Total Capitalization	1,958,994	941,027
Laclede Group [Member] | 3.31% Notes Payable, due December 15, 2022 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	25,000	0
Laclede Gas [Member] | First Mortage Bonds 5-1/2% Series, due May 1, 2019 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	50,000	50,000
Laclede Gas [Member] | First Mortage Bonds 7% Series, due June 1, 2029 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	25,000	25,000
Laclede Gas [Member] | First Mortage Bonds 7.90% Series, due September 15, 2030 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	30,000	30,000
Laclede Gas [Member] | First Mortage Bonds 6% Series, due May 1, 2034 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	100,000	100,000
Laclede Gas [Member] | First Mortage Bonds 6.15% Series, due June 1, 2036 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	55,000	55,000
Laclede Gas [Member] | First Mortage Bonds 6.35% Series, due October 15, 2038 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	80,000	80,000
Laclede Gas [Member] | First Mortage Bonds 3% Series, due March 15, 2023 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	55,000	0
Laclede Gas [Member] | First Mortage Bonds 3.40% Series, due March 15, 2028 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	45,000	0
Laclede Gas [Member] | First Mortage Bonds 2% Series, due August 15, 2018 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	100,000	0
Laclede Gas [Member] | First Mortage Bonds 3.40% Series, due August 15, 2023 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	250,000	0
Laclede Gas [Member] | First Mortage Bonds 4.625% Series, due August 15, 2043 [Member]
Long-Term Debt - Laclede Gas:
Debt instrument, principal outstanding	$ 100,000	$ 0

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Excluding current portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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