Long-term Debt and Finance Leases - Senior Note Repurchases (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Debt Instrument [Line Items]
Loss on debt extinguishment			$ 0	$ 0	$ (260)	$ 0
Accrued interest	$ 2	$ 1
Recourse Debt
Debt Instrument [Line Items]
Principal Repurchased			$ 343		343
Cash paid					603
Recourse Debt | Convertible Senior Notes, due 2048
Debt Instrument [Line Items]
Loss on debt extinguishment					$ 260
Principal Repurchased	251	92
Cash paid	$ 452	$ 151
Average Repurchase Percentage	179.454%	162.356%