Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Operating Activities
Net (loss) income	$ (136)	$ 562
Adjustments to net (loss) income to derive net cash provided by operating activities:
Depreciation and amortization	291	262
Share-based compensation	141	61
Deferred income taxes	(324)	21
Change in operating assets and liabilities	409	(506)
Pension obligation	(101)	25
Excess tax benefits from payments under share-based compensation plans	38	27
Other, net	3	(136)
Net Cash Provided by Operating Activities	320	315
Investing Activities
Capital expenditures	(178)	(112)
(Purchases of) proceeds from sale of investments, net	(63)	16
Acquisitions of businesses, net of cash acquired	(15,013)	0
Proceeds from divestitures, net	0	167
Other, net	(62)	(23)
Net Cash (Used for) Provided by Investing Activities	(15,315)	48
Financing Activities
Change in short-term debt	0	700
Proceeds from long-term debt	2,250	1,054
Payments of debt	0	(2,189)
Repurchase of common stock	0	(220)
Dividends paid	(210)	(156)
Other, net	(101)	(144)
Net Cash Provided by (Used for) Financing Activities	1,938	(955)
Effect of exchange rate changes on cash and equivalents	2	(30)
Net decrease in cash and equivalents	(13,055)	(622)
Opening Cash and Equivalents	14,179	1,541
Closing Cash and Equivalents	$ 1,124	$ 919