Legal Matters (Tables)

3 Months Ended

Dec. 31, 2018

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to accrued litigation:

	Three Months Ended December 31,
	2018			2017
	(in millions)
Balance at beginning of period	$	1,434		$	982
Provision for uncovered legal matters	7			—
Provision for covered legal matters	90			—
Payments for legal matters	(42		)	(152		)
Balance at end of period	$	1,489		$	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:

	Three Months Ended December 31,
	2018		2017
	(in millions)
Balance at beginning of period	$	1,428	$	978
Payments for U.S. covered litigation	—		(150		)
Balance at end of period	$	1,428	$	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:

	Three Months Ended December 31,
	2018			2017
	(in millions)
Balance at beginning of period	$	—		$	1
Accrual for VE territory covered litigation	90			—
Payments for VE territory covered litigation	(35		)	(1		)
Balance at end of period	$	55		$	—