Debt and Financing Arrangements - Schedule of Long Term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2026	Jun. 08, 2026	Dec. 31, 2025	Nov. 14, 2025
Debt Instrument [Line Items]
Long-term debt	$ 4,506.4		$ 2,036.3
Senior Notes | Senior notes at 3.15%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	3.15%
Long-term debt	$ 0.0		299.1
Senior Notes | Senior notes at 3.50%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	3.50%
Long-term debt	$ 449.0		448.5
Senior Notes | Senior notes at 2.300%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	2.30%
Long-term debt	$ 298.0		297.7
Senior Notes | Senior notes at 4.650%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	4.65%	4.65%
Long-term debt	$ 492.9		0.0
Senior Notes | Senior notes at 4.900%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	4.90%	4.90%
Long-term debt	$ 689.3		0.0
Senior Notes | Senior notes at 4.800%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	4.80%			4.80%
Long-term debt	$ 392.7		392.1
Senior Notes | Senior notes at 5.150%
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	5.15%	5.15%
Long-term debt	$ 687.9		0.0
Unsecured Debt | Term Loan 2025
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	4.74%
Long-term debt	$ 599.2		598.9
Unsecured Debt | Term Loan 2026
Debt Instrument [Line Items]
Interest rate, stated percentage (as a percent)	4.81%
Long-term debt	$ 897.4		$ 0.0