Total debt divided by EBITDAX.

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Leverage Ratio, Amount of Credit Limit

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Leverage Ratio, Percentage of Credit Limit

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No definition available.

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EBITDAX divided by consolidated interest expense.

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No definition available.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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

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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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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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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Date the credit facility terminates, in CCYY-MM-DD format.

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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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Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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No definition available.

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Debt (2018 Revolving Credit Facility - Narrative) (Details)		1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 26, 2018 USD ($)	Apr. 30, 2018 USD ($)	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
Debt Instrument [Line Items]
Subsidiary ownership						100.00%
Repayments of long-term debt						$ 2,095,000,000	$ 1,139,000,000	$ 1,175,000,000
Long-term Debt [Member] \| 2016 Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 743,000,000								$ 743,000,000
Line of credit, amount borrowed							0
Long-term Debt [Member] \| 2018 Credit Facility [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 3,500,000,000
Current borrowing capacity						2,100,000,000
Amount outstanding						$ 2,000,000,000
Credit facility, maturity date						Apr. 26, 2023
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Minimum interest coverage ratio	1.00
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio, percentage of credit limit	10.00%
Leverage ratio, amount of credit limit	$ 150,000,000
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Maximum [Member] \| Scenario, Forecast [Member]
Debt Instrument [Line Items]
Leverage ratio			4.00	4.25	4.50
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Eurodollar [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis points	1.50%
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Eurodollar [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis points	2.50%
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Basis points	0.50%
Long-term Debt [Member] \| 2018 Credit Facility [Member] \| Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Basis points	1.50%
Long-term Debt [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Amount outstanding						$ 112,000,000	$ 323,000,000
2016 Term Loan due December 2020 [Member] \| Long-term Debt [Member]
Debt Instrument [Line Items]
Debt instrument face amount									$ 1,191,000,000
Repayments of long-term debt	$ 1,191,000,000	$ 1,191,000,000