Legal Matters (Tables)

12 Months Ended

Sep. 30, 2017

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to accrued litigation.

	Fiscal 2017			Fiscal 2016
	(in millions)
Balance at October 1	$	981		$	1,024
Provision for uncovered legal matters	19			2
Accrual for VE territory covered litigation	186			2
Payments on legal matters	(204		)	(47		)
Balance at September 30	$	982		$	981

U.S. Covered Litigation

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to U.S. covered litigation.

	Fiscal 2017		Fiscal 2016
	(in millions)
Balance at October 1	$	978	$	1,023
Payments on U.S. covered litigation	—		(45		)
Balance at September 30	$	978	$	978

VE Territory Covered Litigation

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to VE territory covered litigation.

	Fiscal 2017			Fiscal 2016
	(in millions)
Balance at October 1	$	2		$	—
Accrual for VE territory covered litigation	186			2
Payments on VE territory covered litigation	(187		)	—
Balance at September 30	$	1		$	2