Available commercial paper.

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Debt Instrument, Covenant, Minimum Consolidated Net Income For Three Consecutive Calendar Months

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No definition available.

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Extended Financing Agreement Term

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Line Of Credit Facility, Committed Amount

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No definition available.

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- Definition

Line of credit facility aggregate commitment amount.

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No definition available.

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- Definition

Line Of Credit Facility, Number Of Extension Options

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No definition available.

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- Definition

Period for borrowing funds.

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No definition available.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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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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No definition available.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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- Definition

Gross amount of debt extinguished.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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DEBT AND FINANCING COSTS - Additional Information (Detail) £ in Millions		1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 21, 2019 USD ($)	Mar. 31, 2019 USD ($)	Nov. 30, 2018 USD ($) contract	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 GBP (£)	Jun. 19, 2019 USD ($)	Mar. 01, 2019 USD ($)	Feb. 28, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Finance lease obligations, current				$ 25,000,000		$ 25,000,000						$ 1,000,000
Loss on extinguishment of debt				75,000,000	$ 0	75,000,000	$ 0
Available commercial paper				3,500,000,000		3,500,000,000
Commercial paper outstanding				0		0
Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, committed amount													$ 4,000,000,000.0
Extended financing agreement term		1 year
Credit facility maximum borrowing capacity		$ 5,000,000,000.0
Letters of credit outstanding, amount				0		0
Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, committed amount				2,080,000,000.00		2,080,000,000.00
Credit facility maximum borrowing capacity				3,000,000,000.0		3,000,000,000.0
Line of credit facility aggregate commitment amount \| £								£ 3.1
Notes And Debentures
Debt Instrument [Line Items]
Debt instrument, fair value				8,600,000,000		8,600,000,000						7,800,000,000
Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount									$ 1,000,000,000.0
Unsecured Debt \| 6.9% senior notes due September 15, 2018
Debt Instrument [Line Items]
Debt instrument, face amount				$ 150,000,000		$ 150,000,000						$ 150,000,000
Debt instrument, stated interest rate				7.625%		7.625%		7.625%				7.625%
Unsecured Debt \| 4.250% Notes Due January 15, 2030
Debt Instrument [Line Items]
Debt instrument, face amount									$ 600,000,000
Debt instrument, stated interest rate									4.25%
Unsecured Debt \| 5.350% Notes Due July 1, 2049
Debt Instrument [Line Items]
Debt instrument, face amount									$ 400,000,000
Debt instrument, stated interest rate									5.35%
Altus Midstream LP \| Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Extended financing agreement term			1 year
Credit facility maximum borrowing capacity			$ 650,000,000							$ 1,500,000,000	$ 800,000,000
Line of credit facility, number of extension options \| contract			2
Debt covenant, minimum consolidated net income for three consecutive calendar months			$ 175,000,000
Borrowings on line of credit				$ 0		$ 0						$ 0
Altus Midstream LP \| Line of Credit \| Letter of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity											100,000,000
Altus Midstream LP \| Line of Credit \| Swingline Loan Subfacility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity											$ 100,000,000
Commercial Paper
Debt Instrument [Line Items]
Period for borrowing funds						270 days
Senior Notes [Member]
Debt Instrument [Line Items]
Debt repurchased principal amount	$ 932,000,000
Extinguishment of debt amount	1,000,000,000.0
Loss on extinguishment of debt	75,000,000
Unamortized debt issuance costs and discount	$ 7,000,000