RELATED PARTIES Additional Information (Details) $ in Millions	6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Apr. 01, 2016 USD ($) a
Schedule of Equity Method Investments [Line Items]
Proceeds from contribution of timberlands to related party (Note 7)	$ 440	$ 0
Real Estate Development Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Capital Contributions Outstanding	29
Maximum Exposure to Loss	$ 80
Real Estate Development Ventures [Member] | Class A Properties [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	3.00%
Other Partner Ownership Percentage	97.00%
Real Estate Development Ventures [Member] | Class B Properties [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Other Partner Ownership Percentage	50.00%
Timberland Venture (Preferred Interest) [Member]
Schedule of Equity Method Investments [Line Items]
Maximum Exposure to Loss	$ 825
Timberland Venture (Preferred Interest) [Member] | Preferred Stock [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	100.00%
Cumulative preferred return	7.875%
Timberland Venture (Preferred Interest) [Member] | Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Other Partner Ownership Percentage	91.00%
Ownership percentage	9.00%
Twin Creeks Venture [Member]
Schedule of Equity Method Investments [Line Items]
Contributed Acres of Timberlands to Venture | a			260,000
Agreed-Upon Value of Acres Contributed			$ 560
Proceeds from contribution of timberlands to related party (Note 7)	$ 440
Ownership Interest	21.00%
Other Partner Ownership Interest			79.00%
Expected Total Committed Capital	$ 950
Expected Capital Contributions	$ 85
Guaranteed Annual Return	3.00%
Percentage of Profit in Excess of Guaranteed Annual Return	75.00%
Term of related party venture	15 years
Term of timber lease	3 years