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Financing Activities - Convertible Debt (Details) - Convertible Debt - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Equity component:
Equity component:
Carrying amount of Convertible Notes		$ 311
Debt Issuance Costs, Net		(11)
Net carrying amount		300
Liability component:
Equity component:
Principal amount	$ 1,933	2,097
Unamortized debt discount		(255)
Net carrying amount	$ 1,933	$ 1,842

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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