Revenue Recognition (Tables)

6 Months Ended

Mar. 31, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue by Geographical Market

The following table presents disaggregated revenue by geographical market:

(in millions)	Three Months Ended March 31						Six Months Ended March 31
	2019			2018			2019			2018
Americas
United States	$	1,630		$	1,634		$	3,245		$	3,112
Mexico	643			656			1,313			1,280
Other Americas	100			135			224			280
Regional elimination	(458		)	(484		)	(932		)	(945		)
	1,915			1,941			3,850			3,727
EMEA
Germany	390			494			731			939
Other EMEA	1,904			2,112			3,650			3,988
Regional elimination	(516		)	(550		)	(963		)	(1,018		)
	1,778			2,056			3,418			3,909
Asia
China	129			154			284			344
Other Asia	471			536			967			994
Regional elimination	(1		)	—			(2		)	—
	599			690			1,249			1,338
Inter-segment elimination	(64		)	(91		)	(131		)	(174		)
Total	$	4,228		$	4,596		$	8,386		$	8,800