Notes and Other Debt, Net - Senior Unsecured Notes (Narrative) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jun. 24, 2025	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	Oct. 13, 2021	Feb. 02, 2021
Debt Instrument [Line Items]
Total principal amount		$ 9,261.5		$ 9,261.5		$ 5,861.5
Repayment of debt				1,063.0	$ 455.9
Gain (loss) on extinguishment of debt		0.0	$ 0.0	(40.5)	$ 0.0
Senior unsecured notes - 6.50%, due February 15, 2029 (discount is based on imputed interest rate of 6.83%)
Debt Instrument [Line Items]
Total principal amount		$ 1,110.0		$ 1,110.0		1,110.0
Issuance senior notes, stated percentage		6.50%		6.50%
Senior unsecured notes - 6.50%, due February 15, 2029 (discount is based on imputed interest rate of 6.83%) | Senior Unsecured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage								6.50%
Senior unsecured notes - 6.00% due January 15, 2030 (discount is based on imputed interest rate of 6.27%)
Debt Instrument [Line Items]
Total principal amount		$ 700.0		$ 700.0		700.0
Issuance senior notes, stated percentage		6.00%		6.00%
Senior unsecured notes - 6.00% due January 15, 2030 (discount is based on imputed interest rate of 6.27%) | Senior Unsecured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage							6.00%
Senior unsecured notes - 8.625% due June 15, 2032 (discount is based on imputed interest rate of 9.16%)
Debt Instrument [Line Items]
Total principal amount		$ 600.0		$ 600.0		0.0
Issuance senior notes, stated percentage		8.625%		8.625%
Senior unsecured notes - 8.625% due June 15, 2032 (discount is based on imputed interest rate of 9.16%) | Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal amount	$ 600.0
Issuance senior notes, stated percentage	8.625%
Eight Point Six Three Percentage Senior Unsecured Notes Due July Fifteen Two Thousand Thirty Two
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt				$ 31.9
Debt issuance costs, net		$ 4.7		4.7
Cash interest expense				27.2
Eight Point Six Three Percentage Senior Unsecured Notes Due July Fifteen Two Thousand Thirty Two | Senior Unsecured Notes
Debt Instrument [Line Items]
Repayment of debt	$ 500.0
Senior secured notes - 10.50%, due February 15, 2028 (discount is based on imputed interest rate of 10.99%)
Debt Instrument [Line Items]
Total principal amount		$ 2,275.0		$ 2,275.0		$ 2,900.0
Issuance senior notes, stated percentage		10.50%		10.50%