Legal Matters (Tables)

12 Months Ended

Sep. 30, 2018

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the activity related to accrued litigation by fiscal year:

	2018			2017
	(in millions)
Balance at beginning of period	$	982		$	981
Provision for uncovered legal matters	7			19
Provision for covered legal matters	601			186
Payments for legal matters	(156		)	(204		)
Balance at end of period	$	1,434		$	982

U.S. Covered Litigation

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the accrual activity related to U.S. covered litigation by fiscal year:

	2018			2017
	(in millions)
Balance at beginning of period	$	978		$	978
Provision for interchange multidistrict litigation	600			—
Payments for U.S. covered litigation	(150		)	—
Balance at end of period	$	1,428		$	978

VE Territory Covered Litigation

Loss Contingencies [Line Items]

Schedule of Loss Contingencies by Contingency

The following table summarizes the accrual activity related to VE territory covered litigation by fiscal year:

	2018			2017
	(in millions)
Balance at beginning of period	$	1		$	2
Accrual for VE territory covered litigation	1			186
Payments for VE territory covered litigation	(2		)	(187		)
Balance at end of period	$	—		$	1