LONG-TERM DEBT (Debt Maturities) (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Mar. 15, 2014	Sep. 30, 2013
Debt Instrument [Line Items]
Unamortized discount on convertible notes	$ 52			$ 66
10.625% Notes Due 2018 [Member]
Debt Instrument [Line Items]
Unamortized discount on convertible notes	0		6	3
Long-term debt by fiscal year maturity [Abstract]
Long-term debt, total	0			247
7.875% convertible notes due 2026 [Member]
Debt Instrument [Line Items]
Unamortized discount on convertible notes	21			23
Debt maturities at Principal Amount [Member]
Long-term debt by fiscal year maturity [Abstract]
Long-term debt, total	1,024	[1]
2015	7	[1]
2016	22	[1]
2017	17	[1]
2018	4	[1]
2019	2	[1]
Thereafter	972	[1],[2]
Convertible Notes [Member]
Debt Instrument [Line Items]
Unamortized discount on convertible notes	31
Convertible Notes [Member] | 7.875% convertible notes due 2026 [Member]
Debt Instrument [Line Items]
Unamortized discount on convertible notes	21
Long-term debt by fiscal year maturity [Abstract]
Long-term debt, total	$ 229	[3]		$ 227	[3]

[1] Total debt excludes the unamortized discount on convertible notes of $31 million and discount of $21 million on the 7.875 percent notes due March 1, 2026.

[2] Includes the company's 4.625 percent, 4.0 percent and 7.875 percent convertible notes, which contain a put and call feature that allows for earlier redemption beginning in 2016, 2019 and 2020, respectively.

[3] 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.