Debt (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Fair value	$ 1,400.3	$ 1,375.9
Debt and Lease Obligation	1,591.2	1,597.0
Interest Expense, Debt	67.2	67.3	$ 55.9
Fair Value, Inputs, Level 3 [Member]
Debt Instrument [Line Items]
Debt and Lease Obligation	0.0	$ 7.1
Senior Notes Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400.0
Debt Instrument, Interest Rate, Stated Percentage	4.875%	4.875%
Fair value	$ 397.0	$ 397.5
Debt and Lease Obligation	$ 399.5	$ 399.0
Maturity date of debt	Oct. 01, 2024	Oct. 01, 2024
Senior Notes Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 550.0
Debt Instrument, Interest Rate, Stated Percentage	3.875%	3.875%
Fair value	$ 530.4	$ 522.1
Debt and Lease Obligation	$ 548.5	$ 547.9
Maturity date of debt	Aug. 26, 2026	Aug. 26, 2026
Senior Notes Due 2051
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 650.0
Debt Instrument, Interest Rate, Stated Percentage	3.85%	3.85%
Fair value	$ 472.7	$ 449.1
Debt and Lease Obligation	$ 643.1	$ 642.9
Maturity date of debt	Jun. 11, 2051	Jun. 11, 2051
Other Miscellaneous Debt [Member] [Domain]
Debt Instrument [Line Items]
Debt and Lease Obligation	$ 0.0	$ 7.1