Long-term Debt and Finance Leases - Senior Note Repurchases (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		4 Months Ended
	Apr. 30, 2024	Mar. 31, 2024	Mar. 31, 2023	Apr. 30, 2024
Debt Instrument [Line Items]
Loss on debt extinguishment		$ (58)	$ 0
Accrued interest		1
Subsequent Event
Debt Instrument [Line Items]
Accrued interest	$ 2			$ 2
Recourse Debt | Subsequent Event
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		58
Principal Repurchased		92
Cash paid		$ 151
Average Repurchase Percentage		162.356%
Recourse Debt | Convertible Senior Notes, due 2048 | Subsequent Event
Debt Instrument [Line Items]
Principal Repurchased	251			$ 251
Cash paid	$ 452
Average Repurchase Percentage	179.454%