Timber and Timberlands (Narrative) (Details) $ in Millions		1 Months Ended	12 Months Ended
	Jan. 26, 2024 USD ($) a	Jan. 31, 2024 USD ($) a	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) a	Dec. 31, 2021 USD ($)	Sep. 14, 2022 a
Asset Acquisition [Line Items]
Depletion from Company Owned Lands			$ 69.0	$ 4.0	$ 40.4
Amortization of Logging Roads			3.6	$ 3.5	$ 3.5
Future payments due under timber cutting contracts			$ 11.4
Mississippi and Arkansas [Member]
Asset Acquisition [Line Items]
Acres acquired through timberland purchase | a				46,000
Alabama, Georgia and South Carolina [Member] | CatchMark Timber Trust, Inc [Member]
Asset Acquisition [Line Items]
Acres acquired through timberland purchase | a						348,000
Subsequent Event [Member] | Arkansas [Member]
Asset Acquisition [Line Items]
Aggregate amount paid or expected to pay to acquire timberlands		$ 31.0
Acres acquired through timberland purchase | a		16,000
Subsequent Event [Member] | Southern Region [Member]
Asset Acquisition [Line Items]
Acres for timberland sale | a	34,000
Expected proceeds from sale of timberlands	$ 58.0
Timber and Timberlands [Member]
Asset Acquisition [Line Items]
Aggregate amount paid or expected to pay to acquire timberlands				$ 101.0