STATEMENT OF CASH FLOWS - USD ($) $ in Millions	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2023	Aug. 11, 2023	Dec. 31, 2025	Dec. 31, 2024
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Net income (loss)	$ 14.7	$ 1,361.9	$ 97.5	$ (14.5)
Adjustments to reconcile net income (loss) to cash provided (used) by operating activities:
Depreciation and amortization	59.0	77.3	127.5	132.3
Amortization of deferred financing costs into interest expense	0.9	21.8	6.4	1.9
Reorganization items (non-cash)	0.0	(1,747.6)	0.0	0.0
Reorganization items (debt make whole premium)	0.0	91.0	0.0	0.0
Share-based compensation	0.1	5.1	12.1	9.7
Loss (gain) on foreign currency transactions	6.0	(5.7)	38.8	(23.5)
Other	0.2	4.5	0.7	15.3
Deferred income taxes	(43.2)	79.8	(48.1)	(34.1)
Changes in certain assets and liabilities:
Trade receivables	(101.6)	9.9	25.9	99.6
Inventories	150.8	(98.1)	65.1	20.9
Sales tax and net value added tax	31.9	(38.1)	17.8	(19.1)
Accounts payable	75.0	(140.4)	(68.3)	(42.2)
Deferred revenue	(43.2)	(51.0)	(21.4)	(34.6)
Accrued salaries, wages and commissions	(1.0)	33.0	9.4	29.0
Restructuring accrual	(3.8)	(30.2)	24.7	5.8
Certain other assets and liabilities	12.2	11.8	12.6	2.7
Net cash provided (used) by operating activities	158.0	(415.0)	300.7	149.2
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Proceeds from maturities of investments	129.0	153.2	306.0	288.8
Payments for purchases of investments	(129.5)	(141.0)	(318.4)	(295.2)
Payments for acquisitions, net of cash acquired	0.0	0.0	(24.5)	0.0
Capital expenditures	(9.8)	(15.1)	(37.4)	(17.4)
Capitalized software development	(9.8)	(13.1)	(24.3)	(23.0)
Other	0.0	0.0	1.0	1.3
Net cash used by investing activities	(20.1)	(16.0)	(97.6)	(45.5)
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Debt issuance costs	0.0	(5.1)	0.0	(26.8)
Payment of Exit Facility Call Premium	0.0	0.0	0.0	(21.0)
Debt make-whole premium	0.0	(91.0)	0.0	0.0
Distributions to noncontrolling interest holders	0.0	0.0	(7.3)	(10.4)
Treasury share activity	0.0	0.0	(130.7)	0.0
Other	(2.3)	(3.4)	(5.9)	(8.2)
Net cash provided (used) by financing activities	(4.0)	563.5	(143.9)	(366.5)
Effect of exchange rate changes on cash and cash equivalents	1.1	2.9	16.8	(18.2)
Change in cash, cash equivalents and restricted cash	135.0	135.4	76.0	(281.0)
Add: Cash included in assets held for sale at beginning of period	0.7	2.8	0.0	0.0
Less: Cash included in assets held for sale at end of period	0.0	0.7	0.0	0.0
Cash, cash equivalents and restricted cash at the beginning of the period	456.6	319.1	311.3	592.3
Cash, cash equivalents and restricted cash at the end of the period	592.3	456.6	387.3	311.3
Supplemental Cash Flow Information [Abstract]
Cash paid for: Income taxes	21.4	25.2	57.2	56.1
Cash paid for: Interest	52.7	74.7	59.1	149.4
2027 Revolving Facility
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	0.0	0.0	0.0	200.0
Repayments of debt	0.0	0.0	0.0	(200.0)
2029 Revolving Facility
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	0.0	0.0	0.0	70.0
Repayments of debt	0.0	0.0	0.0	(70.0)
Exit Facility
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	0.0	1,250.0	0.0
Repayments of debt				(1,250.0)
2030 Senior Secured Notes
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	0.0	0.0	0.0	950.0
ABL Facility
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Repayments of debt	0.0	(188.3)	0.0	0.0
FILO Facility
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	0.0	58.9	0.0	0.0
Repayments of debt	0.0	(58.9)	0.0	0.0
Superpriority Term Loans
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Repayments of debt	0.0	(400.6)	0.0	0.0
International short-term uncommitted lines of credit
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Borrowings and proceeds from debt	5.0	4.4	0.0	0.4
International short-term uncommitted lines of credit and Term Loan B USD and EUR
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Repayments of debt	$ (6.7)	$ (2.5)	$ 0.0	$ (0.5)