The number of positions eliminated during the period as a percentage of total positions eliminated during the period in connection with the restructuring plan(s).

No definition available.

+ Details

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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Balance Type:	debit
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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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Balance Type:	credit
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- Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

Restructuring Charges (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Jan. 31, 2016	Mar. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring liability			$ 5
Restructuring charges			39		$ 73
Positions eliminated, percent	40.00%
Workforce Reduction [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring liability			1
Restructuring charges			23		73
Positions eliminated, percent		40.00%
Fayetteville Shale [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring liability			4
Restructuring charges			$ 16