Non-Cancellable Purchase Obligation

No definition available.

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Namespace Prefix:	sei_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Purchase Obligation, Payable Terms, Maximum Days

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The percentage of termination penalty.

+ References

No definition available.

+ Details

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Namespace Prefix:	sei_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 55
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-15

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477548/944-605-55-12

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-1

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of defendants named in a legal action.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
-SubTopic 20
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-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483076/450-20-50-4

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.9-06)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
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-Name Accounting Standards Codification
-Section S50
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-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
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-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 440
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482648/440-10-50-4

+ Details

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

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Data Type:	na
Balance Type:
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- Details

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- Details

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- Details

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- Details

Name:	srt_RangeAxis=srt_MaximumMember
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- Details

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- Details

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- Details

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- Details

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Commitments and Contingencies - Narrative (Details) $ in Millions		6 Months Ended
	Mar. 13, 2026 USD ($)	Jun. 30, 2026 USD ($) defendant
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Litigation settlement, amount awarded to other party	$ 131.2
Purchase commitments		$ 1,477.2
Standby Letters of Credit
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Letters of aggregate face amount		145.0
Letter of Credit
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Letters of aggregate face amount		70.0
Proceeds from lines of credit		0.0
Revolving Credit Facility
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Letters of aggregate face amount		$ 75.0
Minimum
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Percentage of termination penalty (as a percent)		5.00%
Maximum
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Percentage of termination penalty (as a percent)		90.00%
Colusa Power Infrastructure Partners, LLC
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Litigation settlement, amount awarded to other party	66.9
Purchase commitments		$ 130.2
Purchase obligation, payable terms, maximum days		30 days
Baker Hughes Energy Services LLC
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Litigation settlement, amount awarded to other party	$ 64.3
Baker Hughes Energy Services LLC \| NovaLT16 Turbine Acquisition
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Non-cancellable purchase obligation		$ 364.9
Stateline
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Purchase commitments		168.8
Solaris Energy Management, LLC \| Related Party
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Other commitments		$ 1.4
Masaba Lawsuit
Purchase Commitment, Excluding Long-Term Commitment [Line Items]
Subsidiaries named as defendants \| defendant		2