CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Net Income	$ 94.4	$ 52.2	$ 141.5	$ 87.8
Net gains (losses) on cash flow hedging derivative instruments:
Net hedging gains (losses) arising during the period	(0.6)	(3.5)	(6.5)	(5.1)
Reclassification adjustment for losses (gains) included in net income	2.3	3.2	2.2	2.0
Net unrealized gains (losses) on cash flow hedging derivative instruments	1.7	(0.3)	(4.3)	(3.1)
Defined benefit pension and other postretirement plans:
Amortization of actuarial loss included in net periodic pension and postretirement benefit cost	0.1	0.1	0.2	0.2
Other Comprehensive Income (Loss), Before Tax	1.8	(0.2)	(4.1)	(2.9)
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income	0.6	(0.1)	(1.6)	(1.1)
Other Comprehensive Income (Loss), Net of Tax	1.2	(0.1)	(2.5)	(1.8)
Comprehensive Income	95.6	52.1	139.0	86.0
Laclede Gas
Net Income	49.9	44.2	88.9	79.5
Net gains (losses) on cash flow hedging derivative instruments:
Net hedging gains (losses) arising during the period	0.1	0.1	(1.3)	0.1
Reclassification adjustment for losses (gains) included in net income	0.3	0	0.4	(0.1)
Net unrealized gains (losses) on cash flow hedging derivative instruments	0.4	0.1	(0.9)	0
Defined benefit pension and other postretirement plans:
Amortization of actuarial loss included in net periodic pension and postretirement benefit cost	0	0.1	0.1	0.2
Other Comprehensive Income (Loss), Before Tax	0.4	0.2	(0.8)	0.2
Income Tax Expense (Benefit) Related to Items of Other Comprehensive Income	0.1	0.1	(0.3)	0.1
Other Comprehensive Income (Loss), Net of Tax	0.3	0.1	(0.5)	0.1
Comprehensive Income	$ 50.2	$ 44.3	$ 88.4	$ 79.6