USE OF DERIVATIVES, OFFSETTING DISCLOSURES AND CHANGES IN OTHER COMPREHENSIVE INCOME BY COMPONENT - Schedule of Offsetting of Financial Liabilities and Derivative Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Offsetting of financial liabilities and derivative liabilities [Abstract]
Gross Amounts of Recognized Liabilities (Derivatives)		$ 24,417	$ 26,061
Cash Collateral Pledged (Derivatives)		(29,660)	(50,193)
Gross Amounts of Recognized Liabilities (Repurchase Arrangements)	[1]	12,151,122	10,090,846
Gross Amounts Offset in the Balance Sheet (Repurchase Arrangements)		0	0
Net Amounts of Liabilities Presented in the Balance Sheet (Repurchase Arrangements)	[2]	12,151,122	10,090,846
Financial Instruments (Repurchase Arrangements)	[3]	(12,151,122)	(10,090,846)
Cash Collateral Pledged (Repurchase Arrangements)	[3]	0	0
Net Amount (Repurchase Arrangements)		0	0
Gross Amounts of Recognized Liabilities (Financial Liabilities Total)	[1]	12,180,919	10,124,887
Gross Amounts Offset in the Balance Sheet (Financial Liabilities Total)		6,609	2,962
Net Amounts of Liabilities Presented in the Balance Sheet (Financial Liabilities Total)	[2]	12,187,528	10,127,849
Financial Instruments (Financial Liabilities Total)	[3]	(12,162,803)	(10,098,566)
Cash Collateral Pledged (Financial Liabilities Total)	[3]	(24,725)	(29,283)
Net Amount (Financial Liabilities Total)		0	0
Counterparty 1 [Member]
Offsetting of financial liabilities and derivative liabilities [Abstract]
Gross Amounts of Recognized Liabilities (Derivatives)	[1]	24,725	26,311
Gross Amounts Offset in the Balance Sheet (Derivatives)		0	0
Net Amounts of Liabilities Presented in the Balance Sheet (Derivatives)	[2]	24,725	26,311
Financial Instruments (Derivatives)	[3]	0	0
Cash Collateral Pledged (Derivatives)	[3]	(24,725)	(26,311)
Net Amount (Derivatives)		0	0
Counterparty 2 [Member]
Offsetting of financial liabilities and derivative liabilities [Abstract]
Gross Amounts of Recognized Liabilities (Derivatives)	[1]		776
Gross Amounts Offset in the Balance Sheet (Derivatives)			23
Net Amounts of Liabilities Presented in the Balance Sheet (Derivatives)	[2]		799
Financial Instruments (Derivatives)	[3]		(23)
Cash Collateral Pledged (Derivatives)	[3]		(776)
Net Amount (Derivatives)			0
Counterparty 4 [Member]
Offsetting of financial liabilities and derivative liabilities [Abstract]
Gross Amounts of Recognized Liabilities (Derivatives)	[1]	5,072	6,954
Gross Amounts Offset in the Balance Sheet (Derivatives)		6,609	2,939
Net Amounts of Liabilities Presented in the Balance Sheet (Derivatives)	[2]	11,681	9,893
Financial Instruments (Derivatives)	[3]	(11,681)	(7,697)
Cash Collateral Pledged (Derivatives)	[3]	0	(2,196)
Net Amount (Derivatives)		0	0
Derivative Counterparties [Member]
Offsetting of financial liabilities and derivative liabilities [Abstract]
Gross Amounts of Recognized Liabilities (Derivatives)	[1]	29,797	34,041
Gross Amounts Offset in the Balance Sheet (Derivatives)		6,609	2,962
Net Amounts of Liabilities Presented in the Balance Sheet (Derivatives)	[2]	36,406	37,003
Financial Instruments (Derivatives)	[3]	(11,681)	(7,720)
Cash Collateral Pledged (Derivatives)	[3]	(24,725)	(29,283)
Net Amount (Derivatives)		$ 0	$ 0

[1] Amounts include accrued interest of $12.0 million and $10.9 million on interest rate swap agreements and $7.4 million and $9.3 million on borrowings under repurchase arrangements, included in “Accounts payable and accrued expenses” on the face of the Balance Sheets as of December 31, 2016 and December 31, 2015, respectively.

[2] Amounts presented are limited to recognized liabilities and cash collateral received associated with the indicated counterparty sufficient to reduce the related Net Amount to zero in accordance with ASU No. 2011-11, as amended by ASU No. 2013-01.

[3] Amounts presented are limited to recognized assets and collateral pledged associated with the indicated counterparty sufficient to reduce the related Net Amount to zero in accordance with ASU No. 2011-11, as amended by ASU No. 2013-01.