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Notes and Other Debt, Net - Gain (Loss) on Extinguishment of Debt (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Feb. 28, 2026	Feb. 28, 2025	Mar. 31, 2026	Mar. 31, 2025	Feb. 04, 2026	Dec. 31, 2025	Jun. 24, 2025	May 17, 2024
Debt Instrument [Line Items]
Total principal amount			$ 10,683.1			$ 9,540.5
Gain (loss) on extinguishment of debt			$ 1.2	$ (8.5)
Senior unsecured notes - 8.625% due June 15, 2032 (discount based on imputed interest rate of 9.03%)
Debt Instrument [Line Items]
Issuance senior notes, stated percentage					8.625%
Senior unsecured notes - 8.625% due June 15, 2032 (discount based on imputed interest rate of 9.03%) \| Senior Unsecured Notes
Debt Instrument [Line Items]
Total principal amount					$ 1,000.0		$ 600.0
Gain (loss) on extinguishment of debt	$ 1.2
10.50% Senior Secured Notes due 2028
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt		$ 5.3
Aggregate principal amount		125.0
Debt issuance costs, net		4.8
Gain (loss) on extinguishment of debt, before debt issuance cost writeoff		3.7
10.50% Senior Secured Notes due 2028 \| Senior Secured Notes
Debt Instrument [Line Items]
Issuance senior notes, stated percentage								10.50%
ABS Loan Facility \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt		$ 3.2