Goodwill and Other Intangible Assets - Narrative (Details) - Goodwill - USD ($) $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018		Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Impairment charge	$ 0.0	$ 0.0	$ 42.9	[1]	$ 0.0	$ 0.0	$ 42.9	$ 0.0

[1] As a result of an impairment analysis performed during the second quarter of 2018, we determined that the carrying value of our Canadian reporting unit exceeded its fair value and we recorded an impairment charge of $42.9 million on the Consolidated Statement of Operations. See Note 6. Goodwill and Other Intangible Assets: Goodwill to the Consolidated Financial Statements