CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating Activities
Net income	$ 4,365	$ 3,788
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of client incentives	1,824	1,641
Share-based compensation	130	139
Excess tax benefit for share-based compensation	(82)	(64)
Depreciation and amortization of property, equipment, technology and intangible assets	323	291
Deferred income taxes	(358)	1,562
Other	10	42
Change in operating assets and liabilities:
Income tax receivable	116	(421)
Settlement receivable	24	(5)
Accounts receivable	(55)	(56)
Client incentives	(1,775)	(1,700)
Other assets	(434)	(310)
Accounts payable	(86)	5
Settlement payable	82	98
Accrued and other liabilities	273	351
Accrued litigation (Note 13)	1,055	(4,384)
Net cash provided by operating activities	5,412	977
Investing Activities
Purchases of property, equipment, technology and intangible assets	(326)	(333)
Investment securities, available-for-sale:
Purchases	(1,842)	(2,789)
Proceeds from sales and maturities	1,863	1,767
Acquisition, net of cash received of $25	(134)
Purchases of / contributions to other investments	(3)	(3)
Proceeds / distributions from other investments		4
Net cash used in investing activities	(442)	(1,354)
Financing Activities
Repurchase of class A common stock (Note 9)	(3,362)	(4,054)
Dividends paid (Note 9)	(758)	(653)
(Return to) payments from litigation escrow account—retrospective responsibility plan (Note 2 and Note 13)	(1,056)	4,383
Cash proceeds from exercise of stock options	81	98
Restricted stock and performance-based shares settled in cash for taxes	(85)	(64)
Excess tax benefit for share-based compensation	82	64
Payment for earn-out related to PlaySpan acquisition		(12)
Principal payments on capital lease obligations		(6)
Net cash used in financing activities	(5,098)	(244)
Decrease in cash and cash equivalents	(128)	(621)
Cash and cash equivalents at beginning of year	2,186	2,074
Cash and cash equivalents at end of period	2,058	1,453
Supplemental Disclosure
Income taxes paid, net of refunds	1,943	478
Non-cash accruals related to purchases of property, equipment, technology and intangible assets	$ 42	$ 27