CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Operating Activities
Net income	$ 2,977	$ 2,522
Adjustments to reconcile net income to net cash provided by operating activities:
Client incentives (Note 2)	1,456	1,326
Share-based compensation (Note 11)	100	68
Depreciation and amortization of property, equipment, technology and intangible assets	159	145
Deferred income taxes	139	(919)
Right to recover for covered losses recorded in equity (Note 4)	(91)	(3)
Other	9	(21)
Change in operating assets and liabilities:
Settlement receivable	(1,551)	(180)
Accounts receivable	(200)	(146)
Client incentives	(1,361)	(986)
Other assets	(37)	141
Accounts payable	(46)	(51)
Settlement payable	1,739	275
Accrued and other liabilities	(54)	794
Accrued litigation (Note 13)	55	(152)
Net cash provided by operating activities	3,294	2,813
Investing Activities
Purchases of property, equipment and technology	(157)	(141)
Investment securities:
Purchases	(1,124)	(1,636)
Proceeds from maturities and sales	1,233	1,076
Purchases of / contributions to other investments	(22)	(6)
Net cash used in investing activities	(70)	(707)
Financing Activities
Repurchase of class A common stock (Note 9)	(2,393)	(1,778)
Repayments of long-term debt	0	(1,750)
Dividends paid (Note 9)	(572)	(458)
Cash proceeds from issuance of common stock under employee equity plans	48	53
Restricted stock and performance-based shares settled in cash for taxes	(101)	(88)
Net cash used in financing activities	(3,018)	(4,021)
Effect of exchange rate changes on cash and cash equivalents	(68)	80
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	138	(1,835)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period (Note 3)	10,977	12,011
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period (Note 3)	11,115	10,176
Supplemental Disclosure
Income taxes paid, net of refunds	168	183
Interest payments on debt (Note 6)	234	241
Accruals related to purchases of property, equipment and technology	$ 34	$ 26

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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
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Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686

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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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- Definition

The net change in client incentives due to amortization or adjustments recognized on the consolidated statements of operations.

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- Definition

Litigation payments made during the period.

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- Definition

The net change during the reporting period in settlement payable.

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- Definition

The net change during the reporting period in settlement receivable.

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- Definition

The net change in client incentives during the period.

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- Definition

VE Territory Covered Losses Incurred, Post Acquisition

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