Credit Arrangements (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2018	Dec. 31, 2024	Dec. 31, 2023	May 06, 2022	Oct. 26, 2020
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 650.0
Long-term debt			$ 698.6	$ 940.3
Long-term debt, outstanding			349.8
Remaining borrowing capacity			650.0
Long-term Debt, Excluding Current Maturities			698.6	972.4
Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months			0.0
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two			0.0
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three			350.0
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four			0.0
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five			0.0
Long-Term Debt, Maturities, Repayments of Principal in Rolling after Year Five			350.0
Long-Term Debt, Gross			700.0
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Credit agreement [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate debt		1.00%
Private Placement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						2.32%
Other Long-term Debt						$ 350.0
Other Long-term Debt						$ 350.0
Medium-Term Note [Member] | Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Long-term Debt			349.8	608.9
Line of Credit [Member] | Credit Agreement [Member] | Maximum [Member] | Lender's base rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate debt	0.38%
Line of Credit [Member] | Credit Agreement [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate debt	1.48%
Line of Credit [Member] | Credit Agreement [Member] | Minimum [Member] | Lender's base rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate debt	0.00%
Line of Credit [Member] | Credit Agreement [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate debt	1.00%
Line of Credit [Member] | July 2019 Revolving Credit Facility [Member] | Credit agreement [Member]
Line of Credit Facility [Line Items]
Long-term Debt				15.0
Line of Credit [Member] | May 2022 Revolving Credit Facility | Credit agreement [Member]
Line of Credit Facility [Line Items]
Long-term Debt			0.0
Maximum borrowing capacity					$ 450.0
Line of Credit [Member] | May 6, 2022 Credit Agreement | Line of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					1,100.0
Line of Credit [Member] | September 30, 2022, Credit Agreement Second Amendment [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 1,300.0
Notes Payable, Other Payables | Private Placement Financing
Line of Credit Facility [Line Items]
Long-term Debt			$ 348.8	$ 348.5
Notes Payable, Other Payables | Private Placement
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			2.32%	2.32%
Long-Term Debt | May 6, 2022 Term Loan
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 650.0