STATEMENT OF CASH FLOWS (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Net income (loss)	$ 5.5	$ (7.5)
Adjustments to reconcile net income (loss) to cash flow provided (used) by operating activities:
Depreciation and amortization	31.4	33.9
Amortization of deferred financing costs into interest expense	1.7	1.5
Share-based compensation	3.2	3.0
Deferred income taxes	1.3	(2.0)
(Gain) loss on foreign currency translation	(0.6)	17.3
Other	1.4	(1.4)
Changes in certain assets and liabilities:
Trade receivables	3.8	0.4
Inventories	(38.7)	(4.8)
Accounts payable	59.0	(23.5)
Deferred revenue	61.0	55.2
Sales tax and net value added tax	(30.1)	(11.5)
Accrued salaries, wages and commissions	(28.7)	(26.0)
Certain other assets and liabilities	(38.5)	(18.9)
Net cash provided by operating activities	31.7	15.7
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Capital expenditures	(5.6)	(7.9)
Capitalized software development	(5.4)	(1.7)
Proceeds from maturities of investments	29.1	80.5
Payments for purchases of investments	0.0	(70.9)
Other investments	2.1	0.0
Net cash provided by investing activities	20.2	0.0
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Distributions to noncontrolling interest holders	0.0	(2.0)
Treasury share activity	(60.4)	(9.6)
Other	(1.8)	(1.2)
Net cash used by financing activities	(62.2)	(12.8)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(3.4)	6.0
Change in cash, cash equivalents and restricted cash	(13.7)	8.9
Cash, cash equivalents and restricted cash at the beginning of the period	387.3	311.3
Cash, cash equivalents and restricted cash at the end of the period	373.6	320.2
Supplemental Cash Flow Information [Abstract]
Cash paid for: Income taxes	6.0	6.7
Cash paid for: Interest	$ 37.1	$ 21.4