USE OF DERIVATIVE FINANCIAL INSTRUMENTS, OFFSETTING DISCLOSURES AND CHANGES IN OTHER COMPREHENSIVE INCOME BY COMPONENT - Schedule of Swap Agreements (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2010	Dec. 31, 2012
Derivative Instruments And Hedging Activities [Line Items]
Derivative, average remaining maturity	18 months
Notional Amount	$ 6,700,000,000
Derivative Instruments Unrealized Losses To Be Recognized	14,500,000
Interest Rate SWAP Currently-Paying Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Derivative, average remaining maturity	14 months
Notional Amount	4,200,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.50%
Interest Rate SWAP Currently-Paying Contracts [Member] | First Quarter 2014 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	200,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.60%
Interest Rate SWAP Currently-Paying Contracts [Member] | Second Quarter 2014 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	400,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.51%
Interest Rate SWAP Currently-Paying Contracts [Member] | Third Quarter 2014 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	200,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.51%
Interest Rate SWAP Currently-Paying Contracts [Member] | Fourth Quarter 2014 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	500,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.58%
Interest Rate SWAP Currently-Paying Contracts [Member] | First Quarter 2015 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	1,100,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.50%
Interest Rate SWAP Currently-Paying Contracts [Member] | Second Quarter 2015 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	200,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.43%
Interest Rate SWAP Currently-Paying Contracts [Member] | Third Quarter 2015 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	400,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.47%
Interest Rate SWAP Currently-Paying Contracts [Member] | Fourth Quarter 2015 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	1,200,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.45%
Interest Rate SWAP Forward-Starting Contracts [Member]
Derivative Instruments And Hedging Activities [Line Items]
Derivative, average remaining maturity	25 months
Notional Amount	2,500,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.50%
Interest Rate SWAP Forward-Starting Contracts [Member] | First Quarter 2016 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	1,700,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.51%
Interest Rate SWAP Forward-Starting Contracts [Member] | Second quarter 2016 [Member]
Derivative Instruments And Hedging Activities [Line Items]
Notional Amount	800,000,000
Average Fixed Rate Payment Requirement (in hundredths)	0.46%
Interest Rate Swap Agreements [Member]
Derivative Instruments And Hedging Activities [Line Items]
SWAP agreement notional amount during period	2,500,000,000	100,000,000
SWAP agreement average interest rate during period (in hundredths)	0.50%	4.09%
Swap agreement notional amount expiring during period	2,900,000,000
SWAP agreement average interest rate expiring during period (in hundredths)	0.85%
Payment term of LIBOR interest rate agreement	2 years	20 years
Accrued Interest	5,500,000		7,800,000
Interest Rate Swap Expired One [Member]
Derivative Instruments And Hedging Activities [Line Items]
Payment term of LIBOR interest rate agreement	2 years
Repurchase Arrangements And Similar Borrowings [Member]
Derivative Instruments And Hedging Activities [Line Items]
Accrued Interest	$ 4,700,000		$ 7,000,000