LONG-TERM DEBT (Debt Securities) (Details) (USD $)	12 Months Ended					0 Months Ended				0 Months Ended		12 Months Ended		0 Months Ended			0 Months Ended		0 Months Ended				0 Months Ended	12 Months Ended													0 Months Ended		12 Months Ended					12 Months Ended			9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Nov. 30, 2012	Sep. 30, 2014 6.25% Percent Notes Due 2024 [Member]	Jun. 05, 2013 8.125% Notes Due 2015 [Member]	Sep. 30, 2014 8.125% Notes Due 2015 [Member]	Sep. 30, 2014 4.0 Percent Convertible Notes Due 2027 [Member]		Feb. 13, 2014 6.75% notes due 2021 [Member]	May 31, 2013 6.75% notes due 2021 [Member]	Sep. 30, 2014 6.75% notes due 2021 [Member]	Sep. 30, 2014 6.75% notes due 2021 [Member] Change in Control Redemption [Member]	Mar. 15, 2014 10.625% Notes Due 2018 [Member]	Sep. 30, 2014 10.625% Notes Due 2018 [Member]	Sep. 30, 2013 10.625% Notes Due 2018 [Member]	Aug. 05, 2014 Convertible Notes [Member] 4.0 Percent Convertible Notes Due 2027 [Member]	Aug. 05, 2014 Convertible Notes [Member] 4.0 Percent Convertible Notes Due 2027 [Member]	Sep. 20, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Aug. 20, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Jun. 05, 2013 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Sep. 20, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Mar. 15, 2014 Corporate Debt Securities [Member] 10.625% Notes Due 2018 [Member]	Sep. 30, 2014 Debt Instrument, Redemption Period, Equity Clawback [Member] 6.25% Percent Notes Due 2024 [Member]	Sep. 30, 2014 U.S. Securitization Financing Facility [Member]	Sep. 30, 2013 U.S. Securitization Financing Facility [Member]	Sep. 30, 2014 Corporate Debt Securities [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] 6.25% Percent Notes Due 2024 [Member]		Feb. 13, 2014 Corporate Debt Securities [Member] 6.25% Percent Notes Due 2024 [Member]	Sep. 30, 2013 Corporate Debt Securities [Member] 6.25% Percent Notes Due 2024 [Member]		Sep. 30, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	May 31, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Mar. 31, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Sep. 30, 2013 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	May 31, 2014 Corporate Debt Securities [Member] 6.75% notes due 2021 [Member]	May 31, 2013 Corporate Debt Securities [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] 6.75% notes due 2021 [Member]		Sep. 30, 2013 Corporate Debt Securities [Member] 6.75% notes due 2021 [Member]		May 31, 2013 Corporate Debt Securities [Member] 10.625% Notes Due 2018 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period one [Member] 6.25% Percent Notes Due 2024 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period one [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period two [Member] 6.25% Percent Notes Due 2024 [Member]	Jun. 30, 2014 Corporate Debt Securities [Member] Redemption period two [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period two [Member] 6.25% Percent Notes Due 2024 [Member]	Jun. 30, 2014 Corporate Debt Securities [Member] Redemption period two [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period three [Member] 6.25% Percent Notes Due 2024 [Member]	Jun. 30, 2014 Corporate Debt Securities [Member] Redemption period three [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Redemption period four [Member] 6.25% Percent Notes Due 2024 [Member]	Jun. 30, 2014 Corporate Debt Securities [Member] Redemption period four [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Debt Instrument, Redemption Period, Equity Clawback [Member] 6.75% notes due 2021 [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] Change in Control Redemption [Member] 6.75% notes due 2021 [Member]
Debt Instrument [Line Items]
Value of aggregate debt and equity securities included in registration statement	$ 750,000,000			$ 750,000,000
Corporate Securities, Amount Available For Issuance																											250,000,000
Debt instrument, face amount										225,000,000																									250,000,000			275,000,000
Debt term										10 years																												8 years
Issuance Price Percentage of the Debt Instrument																														100.00%
Proceeds from debt issuances	225,000,000	500,000,000	100,000,000								225,000,000																										275,000,000
Repurchased amount of debt						167,000,000	84,000,000							250,000,000				38,000,000				84,000,000												167,000,000									250,000,000
Redemption price percentage																								106.25%																				100.00%	100.00%	103.125%	105.063%	102.083%	103.375%	101.042%	101.688%	100.00%	100.00%	106.75%	101.00%
Percentage of principal amount that may be redeemed																																							35.00%
Percentage of principal amount redeemed												35.00%
Maximum Limit For Securitization Financing Arrangement																									100,000,000
Stated interest rate					6.25%		8.125%	4.00%				6.75%			10.625%																							6.75%
Derivative, Gain (Loss) On Unamortized Premium																			1,000,000
Long-term debt								162,000,000	[1]						0	247,000,000												225,000,000	[2]		0	[2]	0			84,000,000			275,000,000	[2]	275,000,000	[2]
Repurchase of convertible notes	31,000,000	24,000,000	0			19,000,000								19,000,000			(5,000,000)		5,000,000
Debt Instrument, Redemption Price, Premium Amount																			6,000,000
Debt Instrument, Redemption, Premium On Principal, Percent																	7.00%			7.00%	14.00%		5.00%
Percentage of principal amount outstanding												65.00%																											65.00%
Written notice period												90 days
Redemption price as a percentage of the principal amount to be redeemed													101.00%
Outstanding balance under accounts receivable securitization program																									0	0
Unamortized discount	52,000,000	66,000,000												6,000,000	0	3,000,000
Debt Instrument, Redemption Premium														$ 13,000,000

[1] The 4.625 percent, 4.0 percent and 7.875 percent convertible notes contain a put and call feature, which allows for earlier redemption beginning in 2016, 2019 and 2020, respectively.

[2] The 6.75 percent,and the 6.25 percent notes contain a call option, which allows for early redemption.