Debt - Summary of Debt (Details) - USD ($) $ in Millions		Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total		$ 2,492.1	$ 2,891.7
Less current portion	[1]	0.0	399.6
Less unamortized debt issuance costs		18.4	19.9
Total long-term debt		2,473.7	2,472.2
Line of Credit
Debt Instrument [Line Items]
Total		0.0	0.0
3.65% Senior Notes, due September 2024 | Senior Notes
Debt Instrument [Line Items]
Total		0.0	399.9
Less unamortized debt issuance costs		0.0	0.3
3.40% Senior Notes, due December 2027 | Senior Notes
Debt Instrument [Line Items]
Total		499.4	499.3
3.00% Senior Notes, due December 2029 | Senior Notes
Debt Instrument [Line Items]
Total		499.6	499.6
5.70% Senior Notes, due December 2033 | Senior Notes
Debt Instrument [Line Items]
Total		399.7	399.7
4.05% Senior Notes, due December 2049 | Senior Notes
Debt Instrument [Line Items]
Total		396.8	396.7
3.05% Senior Notes, due October 2051 | Senior Notes
Debt Instrument [Line Items]
Total		$ 696.6	$ 696.5

[1] As of September 30, 2024, there are no unamortized debt issuance costs associated with the current portion of long-term debt, as the 2024 senior notes due September 2024 were repaid on September 15, 2024. As of December 31, 2023, the current portion of long-term debt excludes unamortized debt issuance costs of $0.3 million.