Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net income	$ 238.9	$ 590.4
Adjustments to arrive at cash (used for) provided by operating activities:
Depreciation	31.4	29.9
Amortization of intangible assets	27.5	14.1
Change in fair value of investments	(7.6)	(390.4)
Share-based compensation expense	15.5	11.5
Retirement benefit expense	16.2	30.0
Pension contributions	(7.5)	(8.8)
Net loss on disposition of property	0.4	0.1
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments:
Receivables	(77.7)	(85.5)
Inventories	(78.3)	(40.3)
Accounts payable	(29.7)	20.9
Contract liabilities	27.1	51.4
Compensation and benefits	(135.3)	7.3
Income taxes	(37.6)	72.8
Other assets and liabilities	4.7	43.1
Cash (used for) provided by operating activities	(12.0)	346.5
Investing activities:
Capital expenditures	(37.1)	(27.1)
Acquisition of businesses, net of cash acquired	(10.5)	(283.1)
Purchases of investments	(1.5)	0.0
Proceeds from sale of property	0.4	0.1
Cash used for investing activities	(48.7)	(310.1)
Financing activities:
Net issuance of short-term debt	99.0	125.9
Cash dividends	(130.1)	(124.3)
Purchases of treasury stock	(49.8)	(83.5)
Proceeds from the exercise of stock options	31.8	48.9
Other financing activities	(2.9)	(4.2)
Cash used for financing activities	(52.0)	(37.2)
Effect of exchange rate changes on cash	(9.5)	26.6
(Decrease) increase in cash, cash equivalents, and restricted cash	(122.2)	25.8
Cash, cash equivalents, and restricted cash at beginning of period	679.4	730.4
Cash, cash equivalents, and restricted cash at end of period	557.2	756.2
Components of cash, cash equivalents, and restricted cash:
Cash and cash equivalents	540.0	730.4
Restricted cash, current (Other current assets)	8.6	0.0
Restricted cash, noncurrent (Other assets)	8.6	25.8
Total cash, cash equivalents, and restricted cash	$ 557.2	$ 756.2