Financial Information By Segment (Schedule Of Segment Comprised Of Inkjet Colorants, Aerogel Businesses, And Superior MicroPowders) (Details) (USD $) In Millions	3 Months Ended				9 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Inkjet Colorants [Member]
New business segment sales	$ 20		$ 15		$ 50		$ 43
Aerogel [Member]
New business segment sales	8		8		19		16
Superior MicroPowders [Member]
New business segment sales	2		2		8		5
New Business Segment [Member]
New business segment sales	$ 30	[1]	$ 25	[1]	$ 77	[1]	$ 64	[1]

[1] Unallocated and Other reflects royalties paid by equity affiliates, external shipping and handling fees, and the impact of the corporate adjustment for unearned revenue.