Note 8. Debt and Financing Arrangements Principal Payments (Tables)

12 Months Ended

Sep. 30, 2017

Debt Instrument [Line Items]

Schedule of Maturities of Long-term Debt [Table Text Block]

Principal payments required on long-term debt during the next five years are as follows:

	Year Ended September 30,
(in millions)	2018		2019		2020		2021		2022
Principal payments	$	2	$	2	$	56	$	1,144	$	195