CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Net Income	$ 45.2	$ 46.9
Cash flow hedging derivative instruments:
Net hedging gains (losses) arising during the period	11.5	(0.7)
Reclassification adjustment for losses included in net income	0.2	1.2
Net unrealized gains on cash flow hedging derivative instruments	11.7	0.5
Net gains on defined benefit pension and other postretirement plans	0.1	0.1
Net unrealized losses on available for sale securities	(0.1)	(0.1)
Other Comprehensive Income, Before Tax	11.7	0.5
Income Tax Expense Related to Items of Other Comprehensive Income	4.3	0.2
Other Comprehensive Income, Net of Tax	7.4	0.3
Comprehensive Income	52.6	47.2
Laclede Gas
Net Income	38.0	39.4
Cash flow hedging derivative instruments:
Net hedging gains (losses) arising during the period	0.3	(0.1)
Reclassification adjustment for losses included in net income	0.0	0.3
Net unrealized gains on cash flow hedging derivative instruments	0.3	0.2
Net gains on defined benefit pension and other postretirement plans	(0.1)	0.1
Net unrealized losses on available for sale securities	0.1	(0.1)
Other Comprehensive Income, Before Tax	0.3	0.2
Income Tax Expense Related to Items of Other Comprehensive Income	0.1	0.1
Other Comprehensive Income, Net of Tax	0.2	0.1
Comprehensive Income	$ 38.2	$ 39.5