Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill and other intangible assets	$ 19.0	$ 19.0
Productive Land [Member]
Goodwill [Line Items]
Timber and Timberlands	31.0	31.0
Amortization of Intangible Assets	(1.0)
Developed Technology Rights [Member]
Goodwill [Line Items]
Amortization of Intangible Assets	(1.0)
Finite-Lived Intangible Assets, Net	16.0	17.0
Other Intangible Assets [Member]
Goodwill [Line Items]
Amortization of Intangible Assets	0.0
Finite-Lived Intangible Assets, Net	$ 2.0	$ 2.0