Adjusted leverage ratio.

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Adjusted leverage ratio.

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No definition available.

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Maximum stated leverage ratio allowed.

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Debt Instrument Covenant Interest Coverage Ratio

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Description of reference rate used for variable rate of debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt - Credit Agreements (Details) SFr in Millions, $ in Millions															9 Months Ended
	Oct. 16, 2024 USD ($)	Oct. 16, 2024 CHF (SFr)	Sep. 27, 2024 USD ($)	Sep. 27, 2024 CHF (SFr)	Jun. 25, 2024 USD ($)	Jun. 25, 2024 CHF (SFr)	Jun. 05, 2024 USD ($)	Apr. 15, 2024 USD ($)	Apr. 15, 2024 CHF (SFr)	Mar. 29, 2024 CHF (SFr)	Feb. 01, 2024 USD ($)	Jan. 18, 2024 USD ($)	Jan. 15, 2024 USD ($)	Jan. 15, 2024 CHF (SFr)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Oct. 01, 2024 USD ($)	Oct. 01, 2024 CHF (SFr)	Jul. 02, 2024 USD ($)	Jul. 02, 2024 CHF (SFr)	May 03, 2024 USD ($)	Apr. 29, 2024 USD ($)	Apr. 29, 2024 CHF (SFr)	Feb. 01, 2024 CHF (SFr)	Dec. 31, 2023 USD ($)
Debt Instrument [Line Items]
Long-term fixed interest rate debt															$ 1,369.9										$ 883.3
Maximum borrowing capacity															1,058.6
Proceeds from revolving line of credit													$ 269.0	SFr 230.0	$ 1,073.4	$ 0.0
Three year term loan
Debt Instrument [Line Items]
Maximum borrowing capacity \| SFr										SFr 150.0
Five year term loan
Debt Instrument [Line Items]
Maximum borrowing capacity \| SFr										150.0
Seven year term loan
Debt Instrument [Line Items]
Maximum borrowing capacity \| SFr										SFr 150.0
Debt Instrument, face amount																						$ 165.0	SFr 150.0
Seven year term loan \| SARON \| Minimum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										1.25%
Seven year term loan \| SARON \| Maximum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										1.75%
Three- and five-year term loan
Debt Instrument [Line Items]
Debt Instrument, face amount																			$ 83.0	SFr 75.0		82.0	75.0
Three- and five-year term loan \| SARON \| Minimum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										1.00%
Three- and five-year term loan \| SARON \| Maximum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										1.50%
Term loan agreements
Debt Instrument [Line Items]
Maximum borrowing capacity																			$ 166.0	SFr 150.0		330.0	SFr 300.0
Interest rate terms										the loans are required to bear interest determined by reference to an Alternate Base Rate (“ABR Loans”), then such ABR Loans shall bear interest equal to (i) the federal funds effective rate plus ½ of 1%, (ii) the prime rate announced by Bank of America, N.A., and (iii) 1%, plus a margin ranging from 0.100% to 0.200%, based on the Company’s leverage ratio.
Term loan agreements \| Prime rate
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										1.00%
Debt Instrument, description of variable rate basis										prime rate
Term loan agreements \| Prime rate \| Minimum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										0.10%
Term loan agreements \| Prime rate \| Maximum
Debt Instrument [Line Items]
Interest rate added to base rate (as a percent)										0.20%
Term loan agreements \| SARON
Debt Instrument [Line Items]
Debt Instrument, description of variable rate basis										SARON
Term loan agreements \| Federal Funds
Debt Instrument [Line Items]
Debt Instrument, description of variable rate basis										the federal funds effective rate plus ½ of 1%
Notes purchase agreement two zero two four
Debt Instrument [Line Items]
Interest rate terms											April 15 and October 15 of each year
Debt Instrument, face amount											$ 472.0													SFr 431.0
Debt Instrument, frequency of periodic payment											semi-annually on April 15 and October 15 of each year, commencing April 15, 2024, or October 15, 2024
Amended and restated credit agreement
Debt Instrument [Line Items]
Maximum stated leverage ratio															3.5
Minimum interest coverage ratio required															2.5
Adjusted leverage ratio															4
Adjusted leverage ratio.															0.25%
Amended and restated credit agreement \| Uncommitted incremental facility
Debt Instrument [Line Items]
Maximum borrowing capacity												$ 400.0
Amended and restated credit agreement \| Minimum
Debt Instrument [Line Items]
Debt instrument issued principal												600.0
Amended and restated credit agreement \| Maximum
Debt Instrument [Line Items]
Debt instrument issued principal												900.0
2024 Amended and Restated Revolving Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity																	$ 177.0	SFr 150.0			$ 370.0	$ 434.0
Repayments of debt	$ 58.0	SFr 50.0	$ 149.0	SFr 125.0	$ 168.0	SFr 150.0	$ 420.0	$ 252.0	SFr 230.0
Series 2012A Senior Note Tranche D
Debt Instrument [Line Items]
Repayments of debt												$ 100.0