Long-Term Debt (Tables)

3 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Summary of long-term debt

Long-Term Debt, net of discounts where applicable, is summarized as follows (in millions):

	December 31, 2016			September 30, 2016
4.0 percent convertible notes due 2027(1)(3)	$	142		$	142
7.875 percent convertible notes due 2026(1)(4)	130			129
6.75 percent notes due 2021(2)(5)	271			271
6.25 percent notes due 2024(2)(6)	443			442
Capital lease obligation	15			16
Export financing arrangements and other	6			10
Unamortized discount on convertible notes (7)	(13		)	(14		)
Subtotal	994			996
Less: current maturities	(11		)	(14		)
Long-term debt	$	983		$	982

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

⁽²⁾ The 6.75 percent and 6.25 percent notes contain a call option, which allows for early redemption.

⁽³⁾ The 4.0 percent convertible notes due 2027 are presented net of $1 million unamortized issuance costs as of December 31, 2016 and September 30, 2016.

⁽⁴⁾ The 7.875 percent convertible notes due 2026 are presented net of $2 million unamortized issuance costs as of December 31, 2016 and September 30, 2016, and $8 million and $9 million original issuance discount as of December 31, 2016 and September 30, 2016, respectively.

⁽⁵⁾ The 6.75 percent notes due 2021 are presented net of $4 millionunamortized issuance costs as of December 31, 2016 and September 30, 2016.

⁽⁶⁾ The 6.25 percent notes due 2024 are presented net of $7 million unamortized issuance costs as of December 31, 2016 and September 30, 2016.

⁽⁷⁾ The carrying amount of the equity component related to convertible debt.

Schedule of debt instrument redemption

On or after February 15, 2019, the company may redeem, at its option, from time to time, the 2024 Notes, in whole or in part, at the redemption prices (expressed as percentages of the principal amount of the 2024 Notes to be redeemed) set forth below, plus accrued and unpaid interest, if any, if redeemed during the 12-month period beginning on February 15 of the years indicated below:

Year	Redemption Price
2019	103.125%
2020	102.083%
2021	101.042%
2022 and thereafter	100.000%