COMMITMENTS AND CONTINGENCIES - Contractual Obligations (Detail) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
Oil and Gas Delivery Commitments and Contracts [Line Items]
Total	$ 1,634
2018	258
2019-2020	445
2021-2022	274
2023 & Beyond	657
Sublease income	$ 1
Capital leases imputed interest rate	4.40%
Capital leases future minimum payments due	$ 18
Drilling rigs
Oil and Gas Delivery Commitments and Contracts [Line Items]
Total	85
2018	20
2019-2020	65
2021-2022	0
2023 & Beyond	0
Purchase obligations
Oil and Gas Delivery Commitments and Contracts [Line Items]
Total	1,275
2018	183
2019-2020	296
2021-2022	214
2023 & Beyond	582
Operating lease obligations
Oil and Gas Delivery Commitments and Contracts [Line Items]
Total	233
2018	54
2019-2020	81
2021-2022	57
2023 & Beyond	41
Capital lease obligations
Oil and Gas Delivery Commitments and Contracts [Line Items]
Total	41
2018	1
2019-2020	3
2021-2022	3
2023 & Beyond	$ 34

Capital Leases, Imputed Interest Rate

No definition available.

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- Definition

Amount of minimum lease payments for capital leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

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- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation due in the fourth and fifth fiscal years following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of contractual obligation due in the second and third fiscal years following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

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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.

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- Definition

The amount of revenue recognized for the period under subleasing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 55
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=77891322&loc=d3e41620-112719

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