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DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)		3 Months Ended
	Jan. 30, 2026 USD ($) instrument	Mar. 31, 2026 USD ($) instrument	Dec. 31, 2025 USD ($)
Derivative [Line Items]
Notional Amount		$ 1,609,500
PotlatchDeltic \| Revolving Credit Facility
Derivative [Line Items]
Extinguishment of debt	$ 300,000,000.0
Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Amount expected to be reclassified into earnings in next 12 months		12,700,000
Interest rate swaps \| Derivatives Designated as Cash Flow Hedges \| Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Notional Amount		$ 1,609,500,000	$ 600,000,000
Term		9 years
Interest rate swaps \| PotlatchDeltic \| Derivatives Designated as Cash Flow Hedges \| Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Derivative, number of instruments acquired \| instrument	18	17
Notional Amount	$ 1,037,000,000	$ 1,009,500,000
Interest Rate Swap Maturing February 2026 \| PotlatchDeltic \| Derivatives Designated as Cash Flow Hedges \| Derivatives Designated as Cash Flow Hedges
Derivative [Line Items]
Derivative, number of instruments acquired \| instrument	1
Notional Amount	$ 27,500,000