LONG-TERM DEBT (Summary of Debt) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 8.125% Notes Due 2015 [Member]	Sep. 30, 2014 10.625% Notes Due 2018 [Member]	Mar. 15, 2014 10.625% Notes Due 2018 [Member]	Sep. 30, 2013 10.625% Notes Due 2018 [Member]	Sep. 30, 2014 4.625 Percent Convertible Notes Due 2026 [Member]	Sep. 30, 2014 4.0 Percent Convertible Notes Due 2027 [Member]		Sep. 30, 2014 7.875% convertible notes due 2026 [Member]	Sep. 30, 2013 7.875% convertible notes due 2026 [Member]	Sep. 30, 2014 6.75% notes due 2021 [Member]	Sep. 30, 2014 6.25% Percent Notes Due 2024 [Member]	Sep. 30, 2014 Lines of credit and other borrowings [Member]	Sep. 30, 2013 Lines of credit and other borrowings [Member]	Sep. 30, 2014 Unamortized Gain On Interest Rate Swap Termination [Member]	Sep. 30, 2013 Unamortized Gain On Interest Rate Swap Termination [Member]	Sep. 30, 2014 Unamortized Discount On Convertible Notes [Member]	Sep. 30, 2013 Unamortized Discount On Convertible Notes [Member]	Sep. 30, 2014 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [Member]	Sep. 30, 2013 Corporate Debt Securities [Member] 8.125% Notes Due 2015 [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] 6.75% notes due 2021 [Member]	Sep. 30, 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 Convertible Notes [Member]	Sep. 30, 2014 Convertible Notes [Member] 4.625 Percent Convertible Notes Due 2026 [Member]		Sep. 30, 2013 Convertible Notes [Member] 4.625 Percent Convertible Notes Due 2026 [Member]		Dec. 31, 2012 Convertible Notes [Member] 4.625 Percent Convertible Notes Due 2026 [Member]	Sep. 30, 2014 Convertible Notes [Member] 4.0 Percent Convertible Notes Due 2027 [Member]	Sep. 30, 2013 Convertible Notes [Member] 4.0 Percent Convertible Notes Due 2027 [Member]		Sep. 30, 2014 Convertible Notes [Member] 7.875% convertible notes due 2026 [Member]		Sep. 30, 2013 Convertible Notes [Member] 7.875% convertible notes due 2026 [Member]		Sep. 30, 2014 Term Loan [Member]	Sep. 30, 2013 Term Loan [Member]
Debt Instrument [Line Items]
Long-term debt, total				$ 0		$ 247		$ 162	[1]					$ 31	$ 18	$ 0	$ 2	$ (31)	$ (43)	$ 0	$ 84	$ 275	[2]	$ 275	[2]		$ 225	[2]	$ 0	[2]		$ 55	[1]	$ 55	[1]	$ 300		$ 200	[1]	$ 229	[1]	$ 227	[1]	$ 0	$ 45
Long-term Debt and Capital Lease Obligations	972	1,138
Capital lease obligation	26	28
Less: current maturities	(7)	(13)
Long-term debt	965	1,125
Stated interest rate			8.125%	10.625%			4.625%	4.00%		7.875%		6.75%	6.25%													6.75%						4.625%					4.00%
Unamortized discount on convertible notes	$ 52	$ 66		$ 0	$ 6	$ 3				$ 21	$ 23																				$ 31									$ 21

[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.