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Credit Arrangements - Schedule of Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025	Oct. 31, 2025	Oct. 26, 2020
Debt Instrument [Line Items]
Long-term debt	$ 1,660.5	$ 1,072.6
Long-term debt	1,678.7	1,072.6
Private Placement
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				2.32%
Medium-term Notes [Member] \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Debt Issuance Costs, Gross	1.1	1.5
Notes Payable, Other Payables \| Private Placement
Debt Instrument [Line Items]
Long-term debt	349.2	349.1
Debt Issuance Costs, Gross	$ 0.8	$ 0.9
Debt Instrument, Interest Rate, Stated Percentage	2.32%	2.32%
Long-Term Debt \| Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term debt	$ 375.0
Long-Term Debt \| October 2025 Delayed Draw Term Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 375.0
Long-Term Debt \| October 2025 Term Facility -A1 [Member]
Debt Instrument [Line Items]
Long-term debt	365.6
Long-Term Debt \| October 2025 Term Facility -A2 [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity			375.0
Revolving Credit Facility \| October 2025 Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt	590.0	$ 350.0
Revolving Credit Facility \| Line of Credit [Member] \| October 2025 Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 750.0
Term Loan Facility [Member]
Debt Instrument [Line Items]
Long-term debt	$ 739.5	$ 373.5