Redeemable Preferred Interest in Subsidiary (Details) - One Water Assets & Operations [Member] - USD ($) $ in Millions		3 Months Ended	6 Months Ended
	Feb. 11, 2020	Mar. 31, 2020	Mar. 31, 2020	Sep. 30, 2016
Redeemable Preferred Interest in Subsidiary [Abstract]
Units outstanding (in shares)				100,000
Preferred units outstanding (in shares)				68,000
Preferred interest rate of return			10.00%
Preferred interest redemption period			5 years
Amount of cash to fully redeem the preferred interest	$ 89.2
Amount of accretion of the discount and amortization		$ 1.1