Fair Value of Financial Instruments (Narrative) (Details) - Senior Notes € in Millions, $ in Millions	Sep. 30, 2026 USD ($)	Sep. 30, 2026 EUR (€)	Dec. 31, 2025 USD ($)
0.800% Senior notes due 2028
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate percentage	0.80%	0.80%
Debt fair value	$ 639.5	€ 563.1
Long-term debt, gross	$ 681.4	€ 600.0	$ 703.8
5.450% Senior notes due 2027
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate percentage	5.45%	5.45%
Debt fair value	$ 400.9
Long-term debt, gross	$ 400.0		400.0
5.800% Senior notes due 2034
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate percentage	5.80%	5.80%
Debt fair value	$ 679.7
Long-term debt, gross	$ 700.0		$ 700.0

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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+ Details