Notes Payable and Credit Agreements (Tables)

12 Months Ended

Sep. 30, 2019

Short Term Borrowings [Abstract]

Schedule of Spire Missouri and Alabama Short-term Borrowings

Information about Spire’s consolidated short-term borrowings and about Spire Missouri’s and Spire Alabama’s borrowings from Spire is presented in the following table. As of September 30, 2019, $529.9 of Spire’s short-term borrowings were used to support lending to the Utilities.

	Spire Commercial Paper Borrowings					Spire Missouri Borrowings from Spire					Spire Alabama Borrowings from Spire
Year Ended September 30, 2019
Weighted average borrowings outstanding	$574.5					$296.2					$100.5
Weighted average interest rate	2.7%					2.7%					2.7%
Range of borrowings outstanding	$	363.0	-	$	777.6	$	178.4	-	$	404.9	$	43.8	-	$	169.2
As of September 30, 2019
Borrowings outstanding	$743.2					$386.4					$128.7
Weighted average interest rate	2.3%					2.3%					2.3%
As of September 30, 2018
Borrowings outstanding	$553.6					$345.3					$142.5
Weighted average interest rate	2.4%					2.3%					2.3%