Goodwill and Other Intangible Assets Changes in Goodwill (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

Changes in goodwill balances for the periods indicated below are as follows (in millions):

	Specialty Products
Net balance as of December 31, 2017	$	171.4
Impairment (1)	—
Net balance as of December 31, 2018	$	171.4
Impairment (1)	—
Net balance as of December 31, 2019	$	171.4

⁽¹⁾  Total accumulated goodwill impairment as of December 31, 2019 and 2018, is $35.5 million.