Prepaid Expenses and Other Assets

12 Months Ended

Dec. 31, 2019

Prepaid Expense and Other Assets [Abstract]

Prepaid Expenses and Other Assets

5. Prepaid Expenses and Other Assets

Prepaid expenses and other assets consist of the following:

	December 31, 2019		September 30, 2018
	(in millions)
Prepaid expenses and other assets	$	7.9	$	5.0
Unbilled accounts receivable		15.3		10.8
Total prepaid expenses and other assets	$	23.2	$	15.8