Percentage increase in quarterly dividend.

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- Definition

Share-repurchase program, cash proceeds required for conditioned amount.

+ References

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- Definition

Stock-repurchase program, conditioned amount.

+ References

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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- Definition

Aggregate dividends declared during the period for each share of common stock outstanding.

+ References

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- Definition

Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (a)
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- Definition

The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

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- References

No definition available.

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Stockholders' Equity (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended
Stockholders' Equity (Narrative) (Details) - USD ($)	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Feb. 28, 2019	Jun. 30, 2018	Mar. 31, 2018
Stockholders Equity [Abstract]
Common stock dividends paid, amount			$ 34,000,000		$ 34,000,000
Common stock dividends, rate per share			$ 0.09	$ 0.09	$ 0.08
Scenario Forecast [Member]
Stockholders Equity [Abstract]
Percentage of increase to quarterly dividend		22.00%
Common stock dividends, rate per share		$ 0.11
Scenario Forecast [Member] \| Barnett Shale [Member] \| BKV [Member]
Stockholders Equity [Abstract]
Divestitures of property and equipment	$ 570,000,000
Share Repurchase Programs [Member]
Stockholders Equity [Abstract]
Share-repurchase program, authorized amount							$ 5,000,000,000.0	$ 4,000,000,000.0	$ 1,000,000,000.0
5.0 Billion Dollar Share Repurchase Program [Member]
Stockholders Equity [Abstract]
Share-repurchase program expiration date			Dec. 31, 2019
1.0 Billion Dollar Share Repurchase Program [Member]
Stockholders Equity [Abstract]
Share-repurchase program, authorized amount						$ 1,000,000,000.0
Share-repurchase program expiration date			Dec. 31, 2020
Stock-repurchase program, conditioned amount						$ 800,000,000
Minimum [Member]
Stockholders Equity [Abstract]
Share-repurchase program, cash proceeds required for conditioned amount			$ 725,000,000
Maximum [Member] \| 1.0 Billion Dollar Share Repurchase Program [Member] \| Scenario Forecast [Member]
Stockholders Equity [Abstract]
Share repurchase program, remaining authorized repurchase amount	$ 200,000,000