CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
SALES (NOTE 2)	$ 156,417			$ 200,890			$ 532,764	$ 649,991
Costs and Expenses
Cost of sales	(134,463)			(143,261)			(418,169)	(466,167)
Selling and general expenses	(10,102)			(10,800)			(30,896)	(31,304)
Other operating (expense) income, net (Note 16)	(865)			(451)			(2,799)	2,577
Costs and Expenses, Total	(145,430)			(154,512)			(451,864)	(494,894)
OPERATING INCOME	10,987			46,378			80,900	155,097
Interest expense	(7,996)			(7,838)			(23,629)	(23,992)
Interest and other miscellaneous income, net	788			495			3,178	4,020
INCOME BEFORE INCOME TAXES	3,779			39,035			60,449	135,125
Income tax expense (Note 9)	(2,251)			(8,396)			(10,208)	(22,443)
NET INCOME	1,528	$ 20,920	$ 27,793	30,639	$ 39,338	$ 42,706	50,241	112,682
Less: Net income attributable to noncontrolling interest	(1,961)			(7,207)			(7,129)	(12,453)
NET (LOSS) INCOME ATTRIBUTABLE TO RAYONIER INC.	(433)			23,432			43,112	100,229
OTHER COMPREHENSIVE (LOSS) INCOME
Foreign currency translation adjustment, net of income tax expense of $0, $0, $0 and $0	(28,524)	(5,604)	6,033	(10,527)	(29,760)	9,688	(28,095)	(30,599)
Cash flow hedges, net of income tax (benefit) expense of ($888), ($401), ($644) and ($2,012)	(12,424)	$ (19,519)	$ (10,686)	4,142	$ 529	$ 16,615	(42,629)	21,285
Amortization of pension and postretirement plans, net of income tax expense of $0, $711, $0 and $711	112			(542)			337	(204)
Total other comprehensive (loss)	(40,836)			(6,927)			(70,387)	(9,518)
COMPREHENSIVE (LOSS) INCOME	(39,308)			23,712			(20,146)	103,164
Less: Comprehensive loss (income) attributable to noncontrolling interest	5,169			(4,533)			(197)	(4,004)
COMPREHENSIVE (LOSS) INCOME ATTRIBUTABLE TO RAYONIER INC.	$ (34,139)			$ 19,179			$ (20,343)	$ 99,160
(LOSS) EARNINGS PER COMMON SHARE (NOTE 12)
Basic (loss) earnings per share attributable to Rayonier Inc. (in dollars per share)	$ 0			$ 0.18			$ 0.33	$ 0.78
Diluted (loss) earnings per share attributable to Rayonier Inc. (in dollars per share)	$ 0			$ 0.18			$ 0.33	$ 0.77