Comprehensive Income (Loss) (Tables)

12 Months Ended

Sep. 30, 2017

Statement of Comprehensive Income [Abstract]

Schedule Of Components Of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive loss are as follows:



				in millions
	2017			2016
Accumulated other comprehensive income (loss), net of taxes:
Unrealized net hedging loss	$	(2	)	$	(2	)
Unrealized net gain on investments	—			1
Currency translation adjustment	(53		)	(59		)
Postretirement benefits reserve adjustments	71			15
Total accumulated other comprehensive loss	$	16		$	(45	)

Schedule Of Components Of Other Comprehensive Income (Loss)

The before and after tax changes in the components of other comprehensive income (loss) are as follows:



																			in millions
	2017									2016									2015
	Before Tax			Tax			After Tax			Before Tax			Tax			After Tax			Before Tax			Tax			After Tax

Derivatives accounted for as cash flow hedges:
(Gain) loss reclassified to cost of sales	$	4		$	(2	)	$	2		$	(1	)	$	1		$	—		$	7		$	(3	)	$	4
Unrealized gain (loss)	(3		)	1			(2		)	(1		)	—			(1		)	(4		)	2			(2		)

Investments:
(Gain) loss reclassified to other income/expense	—			—			—			—			—			—			(21		)	8			(13		)
Unrealized gain (loss)	(1		)	—			(1		)	(1		)	1			—			21			(9		)	12

Currency translation:
Translation loss reclassified to cost of sales (a)	—			—			—			—			—			—			115			(8		)	107
Translation adjustment	6			—			6			5			(1		)	4			(86		)	15			(71		)

Postretirement benefits	91			(35		)	56			67			(25		)	42			32			(12		)	20
Total other comprehensive income (loss)	$	97		$	(36	)	$	61		$	69		$	(24	)	$	45		$	64		$	(7	)	$	57

(a) Translation loss reclassified to Cost of Sales related to disposition of a foreign operation, which is further described in Note 3: Acquisitions and Dispositions.