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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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Gross amount of debt extinguished.

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Long-Term Debt (Details) - USD ($)	3 Months Ended
Long-Term Debt (Details) - USD ($)	Mar. 31, 2021	Feb. 28, 2021	Jan. 06, 2021
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 14,000,000
Notes Payable
Debt Instrument [Line Items]
Debt instrument, face amount			$ 5,697,000,000
Debt outstanding			103,000,000
Notes Payable \| Prior Noble Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount			$ 5,697,000,000
Unsecured Debt \| Debentures Due 2097
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		7.25%