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Debt - Senior Notes and Debentures (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Loss on extinguishment of debt	$ 0.0	$ 0.0	$ 0.0	$ 0.2
Senior notes: April 2029
Debt Instrument [Line Items]
Principal	$ 750.0		$ 750.0		$ 750.0
Interest rate	4.875%		4.875%		4.875%	4.875%
Senior Notes Due April 2029 March Issuance
Debt Instrument [Line Items]
Principal						$ 400.0
Senior Notes Due April 2029 December Issuance
Debt Instrument [Line Items]
Principal					$ 350.0
Senior notes: April 2034
Debt Instrument [Line Items]
Principal	$ 800.0		$ 800.0		800.0	$ 800.0
Interest rate	5.00%		5.00%			5.00%
Senior notes: December 2033
Debt Instrument [Line Items]
Principal	$ 650.0		$ 650.0		$ 650.0
Interest rate	5.00%		5.00%		5.00%
Senior notes: November 2029
Debt Instrument [Line Items]
Principal	$ 400.0		$ 400.0		$ 0.0
Interest rate	5.00%		5.00%
Senior notes: November 2034
Debt Instrument [Line Items]
Principal	$ 500.0		$ 500.0		$ 0.0
Interest rate	5.20%		5.20%