Consolidated Statement of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating activities:
Net income	$ 687.7	$ 189.6
Adjustments to arrive at cash provided by operating activities:
Depreciation	92.6	103.5
Amortization of intangible assets	19.6	21.4
Change in fair value of investments	140.1	76.8
Share-based compensation expense	32.5	28.6
Retirement benefit expense	51.6	84.9
Pension contributions	(22.0)	(43.2)
Net loss on disposition of property	1.9	1.4
Settlement of treasury locks	(35.7)	0.0
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(34.4)	(37.7)
Inventories	(77.1)	(26.1)
Accounts payable	(38.1)	18.7
Contract liabilities	26.5	22.5
Compensation and benefits	(73.7)	(8.3)
Income taxes	(66.3)	495.2
Other assets and liabilities	1.8	9.9
Cash provided by operating activities	707.0	937.2
Investing activities:
Capital expenditures	(108.7)	(78.6)
Acquisition of businesses, net of cash acquired	(20.7)	(9.9)
Purchases of investments	(3.3)	(296.9)
Proceeds from maturities of investments	258.7	791.5
Proceeds from sale of investments	0.0	155.3
Proceeds from sale of property	3.3	0.5
Cash provided by investing activities	129.3	561.9
Financing activities:
Net repayment of short-term debt	(550.4)	(349.7)
Issuance of long-term debt, net of discount and issuance costs	987.6	0.0
Repayment of long-term debt	0.0	(250.0)
Cash dividends	(346.9)	(328.3)
Purchases of treasury stock	(787.4)	(1,082.2)
Proceeds from the exercise of stock options	36.5	67.9
Other financing activities	0.0	1.8
Cash used for financing activities	(660.6)	(1,940.5)
Effect of exchange rate changes on cash	(5.7)	(29.4)
Increase (decrease) in cash and cash equivalents	170.0	(470.8)
Cash and cash equivalents at beginning of period	618.8	1,410.9
Cash and cash equivalents at end of period	$ 788.8	$ 940.1