CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Operating activities:
Net income	$ 178.0	$ 213.0
Adjustments to arrive at cash provided by operating activities
Depreciation	40.0	39.0
Amortization of intangible assets	38.0	38.0
Change in fair value of investments	0.0	(3.0)
Share-based compensation expense	23.0	24.0
Retirement benefit expense	10.0	5.0
Pension contributions	(3.0)	(6.0)
Changes in assets and liabilities, excluding effects of acquisitions and foreign currency adjustments
Receivables	73.0	280.0
Inventories	27.0	(28.0)
Accounts payable	(25.0)	(200.0)
Contract liabilities	42.0	14.0
Compensation and benefits	(12.0)	(243.0)
Income taxes	(8.0)	2.0
Other assets and liabilities	(19.0)	(102.0)
Cash provided by operating activities	364.0	33.0
Investing activities:
Capital expenditures	(71.0)	(68.0)
Acquisition of businesses, net of cash acquired	0.0	(748.0)
Other investing activities	(12.0)	(1.0)
Cash used for investing activities	(83.0)	(817.0)
Financing activities:
Net (repayment) issuance of short-term debt	(28.0)	409.0
Cash dividends	(149.0)	(144.0)
Purchases of treasury stock	(100.0)	(120.0)
Proceeds from the exercise of stock options	28.0	11.0
Other financing activities	(5.0)	(22.0)
Cash (used for) provided by financing activities	(254.0)	134.0
Effect of exchange rate changes on cash	(27.0)	9.0
Decrease in cash and cash equivalents	0.0	(641.0)
Cash and cash equivalents at beginning of period	471.0	1,080.0
Cash and cash equivalents at end of period	$ 471.0	$ 439.0