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Debt - Senior Notes (Details) - USD ($)	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Long-term debt	$ 5,663,000,000		$ 6,019,200,000
Debt instrument, unamortized discount	$ 13,100,000		13,900,000
Senior indebtedness
Debt Instrument [Line Items]
Redemption price (as a percentage)	101.00%
Senior indebtedness | 2028 and 2030 Notes
Debt Instrument [Line Items]
Redemption price (as a percentage)	101.00%
Senior indebtedness | 4.900% 2028 Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,000,000,000	$ 1,000,000,000.00	0
Debt issuance costs, gross		1,800,000
Debt instrument, unamortized discount	$ 3,300,000	3,600,000	0
Basis spread on variable rate	15.00%
Debt instrument, redemption price (percent)	100.00%
Senior indebtedness | 5.050% 2030 Notes
Debt Instrument [Line Items]
Long-term debt	$ 1,000,000,000	1,000,000,000.00	0
Debt issuance costs, gross		1,800,000
Debt instrument, unamortized discount	$ 4,100,000	$ 4,300,000	$ 0
Basis spread on variable rate	15.00%
Debt instrument, redemption price (percent)	100.00%

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