Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2025	Mar. 31, 2025	Sep. 30, 2024	Mar. 31, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Operating activities
Net income	$ 184.3	$ 154.9	$ 139.6	$ 133.3	$ 487.7	$ 459.0
Loss from discontinued operations, net of tax					0.0	0.2
Adjustments to reconcile net income from continuing operations to net cash provided by (used for) operating activities
Equity income of unconsolidated subsidiaries					(0.8)	(1.7)
Depreciation	15.3		14.9		44.7	45.3
Amortization	13.9		13.5		42.4	40.4
Deferred income taxes					20.8	3.6
Loss on sale of business	0.0		0.0		26.3	0.0
Share-based compensation	6.1		10.0		27.3	26.3
Asset impairment and write-offs					48.5	9.3
Changes in assets and liabilities, net of effects of business acquisitions
Accounts receivable					56.7	66.2
Inventories					(45.7)	30.1
Other current assets					(35.8)	5.0
Accounts payable					31.2	7.3
Employee compensation and benefits					(9.4)	(8.0)
Other current liabilities					60.8	(19.7)
Other non-current assets and liabilities					9.3	17.1
Net cash provided by operating activities of continuing operations					764.0	680.4
Net cash used for operating activities of discontinued operations					0.0	(0.2)
Net cash provided by operating activities					764.0	680.2
Investing activities
Capital expenditures					(45.1)	(51.7)
Purchase of investments					(18.0)	0.0
Proceeds from sale of property and equipment					0.1	0.4
Payments upon the settlement of net investment hedges					0.0	(16.4)
Acquisitions, net of cash acquired					(292.2)	0.0
Other					0.9	(0.5)
Net cash used for investing activities					(354.3)	(68.2)
Financing activities
Net repayments of short-term borrowings					(9.3)	0.0
Net borrowings of revolving long-term debt					210.5	0.0
Repayments of long-term debt					(269.3)	(362.5)
Debt issuance costs					(2.2)	0.0
Shares issued to employees, net of shares withheld					(2.2)	16.8
Repurchases of ordinary shares					(175.0)	(100.0)
Dividends paid					(123.3)	(114.3)
Net cash used for financing activities					(370.8)	(560.0)
Effect of exchange rate changes on cash and cash equivalents					(29.2)	(4.2)
Change in cash and cash equivalents					9.7	47.8
Cash and cash equivalents, beginning of period		$ 118.7		$ 170.3	118.7	170.3	$ 170.3
Cash and cash equivalents, end of period	$ 128.4		$ 218.1		$ 128.4	$ 218.1	$ 118.7