Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net income	$ 1,370.8	$ 266.6
Adjustments to reconcile net income to cash flows from operating activities:
Income from discontinued operations	(1,246.4)	(169.6)
Depreciation and amortization	60.7	52.1
Deferred income taxes	(26.6)	29.6
Stock-based compensation expense	8.8	11.7
Other, net	2.1	1.6
Change in operating assets and liabilities
Receivables	(3.5)	(2.1)
Inventories	(3.3)	(1.8)
Payables and accrued liabilities	76.4	8.7
Other assets and liabilities	10.9	(69.9)
Operating cash flows from continuing operations	249.9	126.9
Operating cash flows from discontinued operations	(298.3)	64.3
Total cash (used in) provided by operating activities	(48.4)	191.2
Cash flows from investing activities
Additions to property, plant and equipment	(125.9)	(89.5)
Acquisitions of businesses, net of cash acquired	(27.8)	(42.7)
Purchases of investments	(440.4)	0.0
Other investing activities, net	(0.8)	8.6
Investing cash flows from continuing operations	(594.9)	(123.6)
Investing cash flows from discontinued operations	2,621.0	(20.0)
Total cash provided by (used in) investing activities	2,026.1	(143.6)
Cash flows from financing activities
Proceeds from borrowings, net of issuance costs	920.9	0.0
Repayments on borrowings	(915.0)	(0.6)
Repurchases of common stock	(1,395.5)	(103.5)
Cash dividends paid	(21.8)	(67.1)
Other financing activities	(16.0)	(13.6)
Financing cash flows from continuing operations	(1,427.4)	(184.8)
Financing cash flows from discontinued operations	(108.1)	6.8
Total cash used in financing activities	(1,535.5)	(178.0)
Effect of currency exchange rate changes on cash, cash equivalents and restricted cash	0.6	(1.4)
Increase (decrease) in cash, cash equivalents, and restricted cash	442.8	(131.8)
Cash, cash equivalents, and restricted cash - beginning of period	83.9	231.4
Cash, cash equivalents, and restricted cash - end of period	$ 526.7	$ 99.6