Legal Matters (Tables)

6 Months Ended

Mar. 31, 2019

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to accrued litigation:

	Six Months Ended March 31,
	2019			2018
	(in millions)
Balance at beginning of period	$	1,434		$	982
Provision for uncovered legal matters	35			—
Provision for covered legal matters	159			1
Payments for legal matters	(714		)	(153		)
Balance at end of period	$	914		$	830

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:

	Six Months Ended March 31,
	2019			2018
	(in millions)
Balance at beginning of period	$	1,428		$	978
Payments for U.S. covered litigation	(600		)	(150		)
Balance at end of period	$	828		$	828

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:

	Six Months Ended March 31,
	2019			2018
	(in millions)
Balance at beginning of period	$	—		$	1
Accrual for VE territory covered litigation	159			1
Payments for VE territory covered litigation	(98		)	(2		)
Balance at end of period	$	61		$	—