FINANCIAL INSTRUMENTS (Details) (USD $)	12 Months Ended									3 Months Ended			1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jul. 24, 2012 Interest Rate Swaps [Member]	Dec. 31, 2012 Interest Rate Swaps [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2012 Interest Rate Swaps [Member] 3.20% Senior Notes Due 2016 [Member]	Dec. 31, 2012 Interest Rate Swaps [Member] 3.20% Senior Notes Due 2016 [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2011 Interest Rate Swaps [Member] 3.20% Senior Notes Due 2016 [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2012 Interest Rate Swaps [Member] Senior Notes Due 2020 [Member]	Dec. 31, 2011 Interest Rate Swaps [Member] Senior Notes Due 2020 [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2012 Fair Value Hedging [Member]	Jul. 31, 2012 Fair Value Hedging [Member]	Dec. 31, 2011 Fair Value Hedging [Member]	Jul. 31, 2012 Fair Value Hedging [Member] Minimum [Member]	Dec. 31, 2011 Fair Value Hedging [Member] Minimum [Member]	Dec. 31, 2012 Fair Value Hedging [Member] Minimum [Member]	Jul. 31, 2012 Fair Value Hedging [Member] Maximum [Member]	Dec. 31, 2011 Fair Value Hedging [Member] Maximum [Member]	Dec. 31, 2012 Fair Value Hedging [Member] Maximum [Member]
Derivative [Line Items]
Accumulated net loss from designated or qualifying cash flow hedges	$ 6,800,000	$ 7,700,000
Net amount of deferred gains and losses on cash flow hedges that is expected to be reclassified within the next 12 months	1,300,000
Fair value hedges - fixed-to-variable interest rate swaps					200,000,000			350,000,000		400,000,000	550,000,000	550,000,000
Description of variable rate basis										one-month LIBOR			six-month LIBOR	six-month LIBOR		one-month LIBOR	one-month LIBOR
Variable interest rate													2.30%	0.54%	3.40%	3.60%	1.33%	5.10%
Derivative asset designated as hedging instrument fair value on termination			71,800,000
Amount to be amortized as a reduction of interest expense			65,200,000
Derivative instruments, assets						830,000	10,900,000		45,662,000
Derivative instruments, liabilities				3,100,000
Notional amount of foreign currency forward contracts	$ 7,300,000