Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Statement of Financial Position [Abstract]
Accounts and notes receivable, reserve for doubtful accounts	$ 7	$ 8
Preferred stock, authorized shares	2,000,000	2,000,000
Preferred stock, par value	$ 1	$ 1
Preferred stock, issued shares	0	0
Preferred stock, outstanding shares	0	0
Common stock, authorized shares	200,000,000	200,000,000
Common stock, par value	$ 1	$ 1
Common stock, issued shares	64,634,731	64,223,985
Common stock, outstanding shares	64,382,366	63,970,502
Common treasury stock, shares	252,365	253,483