Intangible Assets, Net (Tables)

12 Months Ended

Sep. 30, 2018

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of Intangible Assets by Major Class

Indefinite-lived and finite-lived intangible assets consisted of the following:

	September 30, 2018							September 30, 2017
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
	(in millions)
Finite-lived intangible assets:
Customer relationships	$	452	$	(274	)	$	178	$	438	$	(237	)	$	201
Trade names	199		(106		)	93		195		(93		)	102
Reseller relationships	95		(82		)	13		95		(79		)	16
Other	17		(11		)	6		17		(9		)	8
Total finite-lived intangible assets	763		(473		)	290		745		(418		)	327
Indefinite-lived intangible assets:
Customer relationships and reacquired rights	23,184		—			23,184		23,437		—			23,437
Visa trade name	4,084		—			4,084		4,084		—			4,084
Total indefinite-lived intangible assets	27,268		—			27,268		27,521		—			27,521
Total intangible assets	$	28,031	$	(473	)	$	27,558	$	28,266	$	(418	)	$	27,848

Schedule of Estimated Future Amortization Expense

At September 30, 2018, estimated future amortization expense on finite-lived intangible assets is as follows:

Fiscal year ending September 30,	2019		2020		2021		2022		2023		Thereafter		Total
	(in millions)
Estimated future amortization expense	$	56	$	56	$	56	$	50	$	28	$	44	$	290