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Long-term Debt and Finance Leases - Interest Expense in Connection with Convertible Senior Notes, due 2048 (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Amortization of financing costs and debt discounts	$ 6	$ 11
Convertible Senior Notes Due 2048 | Recourse Debt
Debt Instrument [Line Items]
Contractual interest expense	4	4
Amortization of financing costs and debt discounts	0	4
Total	$ 4	$ 8
Effective Interest Rate	0.76%	1.32%

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Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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