Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
Operating Activities
Net Income	$ 1,100	$ 976	$ 695
Adjustments to net income to derive net cash provided by operating activities:
Depreciation and amortization	1,088	1,114	891
Share-based compensation	174	196	166
Deferred income taxes	(236)	(426)	(336)
Change in operating assets and liabilities:
Trade receivables, net	(93)	(128)	(2)
Net investment in sales-type leases	14	51	28
Inventories	(46)	69	200
Prepaid expenses and other	(380)	39	(97)
Accounts payable, income taxes and other liabilities	134	368	145
Pension obligation	84	(32)	28
Excess tax benefits from payments under share-based compensation plans	77	0	0
Lease contract modification-related charge	748	0	0
Other, net	(114)	332	11
Net Cash Provided by Operating Activities	2,550	2,559	1,730
Investing Activities
Capital expenditures	(727)	(693)	(596)
Proceeds from (purchases of) investments, net	13	(1)	840
Acquisitions of businesses, net of cash acquired	(174)	0	(8,414)
Divestitures of businesses, net	165	158	0
Other, net	(161)	(133)	(147)
Net Cash Used for Investing Activities	(883)	(669)	(8,318)
Financing Activities
Change in short-term debt	(200)	(500)	497
Proceeds from long-term debt	11,462	0	6,164
Payments of debt	(3,980)	(752)	(6)
Proceeds from issuance of equity securities	4,827	0	0
Repurchase of common stock	(220)	0	0
Excess tax benefit from payments under share-based compensation plans	0	86	48
Dividends paid	(677)	(562)	(485)
Other, net	(234)	(32)	(27)
Net Cash Provided by (Used for) Financing Activities	10,977	(1,761)	6,190
Effect of exchange rate changes on cash and equivalents	(6)	(12)	(38)
Net Increase (Decrease) in Cash and Equivalents	12,638	117	(436)
Opening Cash and Equivalents	1,541	1,424	1,861
Closing Cash and Equivalents	$ 14,179	$ 1,541	$ 1,424