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Debt - Summary of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Oct. 31, 2021	Oct. 08, 2021	Sep. 21, 2021	Nov. 21, 2019	Dec. 13, 2017	Sep. 05, 2014
Debt Instrument [Line Items]
Long-term debt	$ 2,491.5	$ 2,491.0
Less unamortized debt issuance costs	17.9	19.5
Long-term debt	2,473.6	2,471.5
Line of Credit
Debt Instrument [Line Items]
Long-term debt	0.0	0.0
3.65% Senior Notes, due September 2024
Debt Instrument [Line Items]
Stated interest rate			4.50%
3.65% Senior Notes, due September 2024 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 399.8	$ 399.6
Stated interest rate	3.65%	3.65%		4.50%	4.50%
3.40% Senior Notes, due December 2027 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 499.1	$ 499.0
Stated interest rate	3.40%	3.40%						3.65%
3.00% Senior Notes, due December 2029 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 499.5	$ 499.5
Stated interest rate	3.00%	3.00%				3.00%	3.40%
4.05% Senior Notes, due December 2049 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 396.7	$ 396.6
Stated interest rate	4.05%	4.05%
3.05% Senior Notes, due October 2051 \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 696.4	$ 696.3
Stated interest rate	3.05%	3.05%			3.05%