Consolidated Statement of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income	$ 919.1	$ 1,344.3	$ 1,023.2
Adjustments to arrive at cash provided by operating activities
Depreciation	126.6	123.9	122.5
Amortization of intangible assets	112.3	65.9	50.2
Change in fair value of investments	136.9	(397.4)	(153.9)
Share-based compensation expense	68.1	51.7	46.1
Retirement benefit expense	76.4	155.1	129.5
Pension contributions	(53.6)	(35.8)	(84.1)
Deferred income taxes	(33.6)	(184.1)	(65.7)
Net loss (gain) on disposition of property	0.6	0.5	(12.4)
Settlement of interest rate derivatives	0.0	(28.0)	22.0
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments
Receivables	(415.6)	(138.1)	(9.0)
Inventories	(292.8)	(202.8)	30.4
Accounts payable	172.0	184.8	(5.0)
Contract liabilities	102.0	104.4	43.3
Compensation and benefits	(78.2)	174.6	(44.6)
Income taxes	(129.3)	57.2	(11.8)
Other assets and liabilities	112.2	(15.2)	39.8
Cash provided by operating activities	823.1	1,261.0	1,120.5
Investing activities:
Capital expenditures	(141.1)	(120.3)	(113.9)
Acquisition of businesses, net of cash acquired	(16.6)	(2,488.5)	(550.9)
Purchases of investments	(59.8)	(13.6)	(10.7)
Proceeds from sale of investments	210.2	0.0	37.9
Proceeds from sale of property	0.6	0.4	14.9
Other investing activities	(1.1)	(4.6)	4.7
Cash used for investing activities	(7.8)	(2,626.6)	(618.0)
Financing activities:
Net issuance of short-term debt	40.8	275.9	0.0
Issuance of short-term debt, net of issuance costs	18.8	211.4	423.6
Issuance of long-term debt, net of discount and issuance costs	0.0	1,485.6	0.0
Repayment of short-term debt	(210.0)	(2.5)	(400.0)
Repayment of long-term debt	0.0	0.0	(300.7)
Cash dividends	(519.4)	(497.1)	(472.8)
Purchases of treasury stock	(301.3)	(299.7)	(264.2)
Proceeds from the exercise of stock options	57.9	154.6	214.4
Other financing activities	(21.0)	(30.4)	0.8
Cash (used for) provided by financing activities	(934.2)	1,297.8	(798.9)
Effect of exchange rate changes on cash	(52.6)	16.8	8.4
Decrease in cash, cash equivalents, and restricted cash	(171.5)	(51.0)	(288.0)
Cash, cash equivalents, and restricted cash at beginning of year	679.4	730.4	1,018.4
Cash, cash equivalents, and restricted cash at end of year	507.9	679.4	730.4
Components of cash, cash equivalents, and restricted cash
Cash and cash equivalents	490.7	662.2	704.6
Restricted cash, current (Other current assets)	8.6	0.0	0.0
Restricted cash, noncurrent (Other assets)	8.6	17.2	25.8
Total cash, cash equivalents, and restricted cash	$ 507.9	$ 679.4	$ 730.4