Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income	$ 189.6	$ 621.1
Adjustments to arrive at cash provided by operating activities:
Depreciation	103.5	100.7
Amortization of intangible assets	21.4	23.3
Change in fair value of investments	76.8	0.0
Share-based compensation expense	28.6	29.4
Retirement benefit expense	84.9	129.2
Pension contributions	(43.2)	(40.8)
Net loss (gain) on disposition of property	1.4	(0.1)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(37.7)	(39.7)
Inventories	(26.1)	(53.0)
Accounts payable	18.7	66.7
Advance payments from customers and deferred revenue	22.5	30.1
Compensation and benefits	(8.3)	105.7
Income taxes	495.2	(22.4)
Other assets and liabilities	9.9	(23.1)
Cash provided by operating activities	937.2	927.1
Investing activities:
Capital expenditures	(78.6)	(97.5)
Acquisition of businesses, net of cash acquired	(9.9)	(1.1)
Purchases of investments	(296.9)	(916.8)
Proceeds from maturities of investments	791.5	614.9
Proceeds from sale of investments	155.3	36.0
Proceeds from sale of property	0.5	0.8
Cash provided by (used for) investing activities	561.9	(363.7)
Financing activities:
Net repayment of short-term debt	(349.7)	(100.2)
Repayment of long-term debt	(250.0)	0.0
Cash dividends	(328.3)	(293.2)
Purchases of treasury stock	(1,082.2)	(304.6)
Proceeds from the exercise of stock options	67.9	160.3
Other financing activities	1.8	0.0
Cash used for financing activities	(1,940.5)	(537.7)
Effect of exchange rate changes on cash	(29.4)	(2.7)
(Decrease) increase in cash and cash equivalents	(470.8)	23.0
Cash and cash equivalents at beginning of period	1,410.9	1,526.4
Cash and cash equivalents at end of period	$ 940.1	$ 1,549.4