XML 88 R63.htm IDEA: XBRL DOCUMENT v3.22.4

Derivative Financial Instruments Gains and Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, (Gain) Loss [Line Items]
Derivative settlement (gain) loss	$ 710,700	$ 748,958	$ (351,261)
Net derivative (gain) loss	374,012	901,659	(161,576)
Oil Contracts
Derivative Instruments, (Gain) Loss [Line Items]
Derivative settlement (gain) loss	514,641	523,245	(331,559)
Net derivative (gain) loss	284,863	650,959	(205,180)
Gas Contracts
Derivative Instruments, (Gain) Loss [Line Items]
Derivative settlement (gain) loss	171,598	152,361	(11,898)
Net derivative (gain) loss	82,769	172,248	30,038
NGL Contracts
Derivative Instruments, (Gain) Loss [Line Items]
Derivative settlement (gain) loss	24,461	73,352	(7,804)
Net derivative (gain) loss	$ 6,380	$ 78,452	$ 13,566

X

- Definition

Realized gain or loss recognized in earnings from the settlement of derivative instruments not designated as hedges.

+ References

No definition available.

+ Details

Name:	sm_Derivativesettlementgainorloss
Namespace Prefix:	sm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- 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

Name:	us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

+ Details

Name:	us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=sm_OilContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=sm_GasContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=sm_NGLContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: