CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions		3 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Revenues
Net revenues		$ 5,506	$ 4,862
Operating Expenses
Personnel		807	679
Marketing		276	223
Network and processing		173	160
Professional fees		91	92
Depreciation and amortization		159	145
General and administrative		276	236
Litigation provision (Note 13)		7	0
Total operating expenses		1,789	1,535
Operating income		3,717	3,327
Non-operating Income (Expense)
Interest expense		(145)	(154)
Other		58	66
Total non-operating expense		(87)	(88)
Income before income taxes		3,630	3,239
Income tax provision (Note 12)		653	717
Net income		$ 2,977	$ 2,522
Class A common stock
Earnings Per Share
Basic earnings per share (in dollars per share)	[1]	$ 1.30	$ 1.07
Basic weighted-average shares outstanding (in shares)		1,760	1,811
Diluted earnings per share (in dollars per share)	[1]	$ 1.30	$ 1.07
Diluted weighted-average shares outstanding (in shares)	[2]	2,291	2,353
Class B common stock
Earnings Per Share
Basic earnings per share (in dollars per share)	[1]	$ 2.12	$ 1.77
Basic weighted-average shares outstanding (in shares)		245	245
Diluted earnings per share (in dollars per share)	[1]	$ 2.12	$ 1.77
Diluted weighted-average shares outstanding (in shares)		245	245
Class C common stock
Earnings Per Share
Basic earnings per share (in dollars per share)	[1]	$ 5.20	$ 4.30
Basic weighted-average shares outstanding (in shares)		12	13
Diluted earnings per share (in dollars per share)	[1]	$ 5.20	$ 4.29
Diluted weighted-average shares outstanding (in shares)		12	13

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

[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 approximately 3 million and 5 million common stock equivalents for the three months ended December 31, 2018 and 2017, respectively, because their effect would be dilutive. The computation excludes 1 million and 2 million of common stock equivalents for the three months ended December 31, 2018, and 2017 respectively, because their effect would have been anti-dilutive.