CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Operating Revenues
Service revenues	$ 1,419		$ 1,300
Data processing revenues	1,264		1,115
International transaction revenues	891		805
Other revenues	180		179
Client incentives	(599)		(553)
Total operating revenues	3,155		2,846
Operating Expenses
Personnel	470		454
Marketing	186		193
Network and processing	132		110
Professional fees	75		88
Depreciation and amortization	107		92
General and administrative	108		106
Litigation provision (Note 11)			3
Total operating expenses	1,078		1,046
Operating income	2,077		1,800
Non-operating income	6		1
Income before income taxes	2,083		1,801
Income tax provision	676		508
Net income	$ 1,407		$ 1,293
Class A common stock
Earnings Per Share
Basic earnings per share (Note 8)	$ 2.21	[1]	$ 1.94	[1]
Basic weighted-average shares outstanding (Note 8)	505	[1]	531	[1]
Diluted earnings per share (Note 8)	$ 2.20	[1]	$ 1.93	[1]
Diluted weighted-average shares outstanding (Note 8)	639	[1],[2]	669	[1],[2]
Class B common stock
Earnings Per Share
Basic earnings per share (Note 8)	$ 0.93	[1]	$ 0.82	[1]
Basic weighted-average shares outstanding (Note 8)	245	[1]	245	[1]
Diluted earnings per share (Note 8)	$ 0.93	[1]	$ 0.81	[1]
Diluted weighted-average shares outstanding (Note 8)	245	[1]	245	[1]
Class C common stock
Earnings Per Share
Basic earnings per share (Note 8)	$ 2.21	[1]	$ 1.94	[1]
Basic weighted-average shares outstanding (Note 8)	27	[1]	30	[1]
Diluted earnings per share (Note 8)	$ 2.20	[1]	$ 1.93	[1]
Diluted weighted-average shares outstanding (Note 8)	27	[1]	30	[1]

[1] Figures in the table may not recalculate exactly due to rounding. Earnings per share is calculated based on whole numbers, not the rounded numbers presented.

[2] Weighted-average diluted shares outstanding are calculated on an as-converted basis, and include incremental common stock equivalents, as calculated under the treasury stock method. The computation includes 2 million of common stock equivalents for the three months ended December 31, 2013 and December 31, 2012, because their effect would be dilutive. The calculation excludes less than 1 million of common stock equivalents for the three months ended December 31, 2013 and December 31, 2012 because their effect would have been anti-dilutive.