Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Current Assets

	December 31, 2021		December 31, 2020
Prepaid expenses	$	17.2	$	12.0
Assets held for sale		4.6		-
Other		1.3		0.8
Total other current assets	$	23.1	$	12.8

As of December 31, 2021, assets held for sale included the property, plant and equipment of our idled Mineral Fiber plant in St. Helens, Oregon.