Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Other Liabilities Disclosure [Abstract]

Schedule of other liabilities

	December 31, 2019		September 30, 2018
	(in millions)
Customer prepayments and deposits	$	1.9	$	3.7
Fair value of hedging instrument		—		0.2
Total other liabilities, current		1.9		3.9
Other payables, net of current portion		—		0.5
Asset retirement obligations		2.1		0.4
Pension liability		3.1		—
Senior debt exit premium		—		4.2
Total other liabilities, long-term		5.2		5.1
	$	7.1	$	9.0