v3.25.4

Debt - Narrative (Details) - ABL Facility - Line of Credit - USD ($)	9 Months Ended
	Jan. 31, 2026	Apr. 30, 2025
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 4,750,000,000
Debt amount utilized	1,489,000,000
Letters of credit	$ 5,000,000
Basis spread on variable rate (as a percent)	125.00%
Weighted average interest rate (as a percent)	4.748%	5.242%
Fixed charge coverage ratio	1.0
Minimum availability under the bank facility for covenant purposes	$ 475,000,000
Availability under the bank facility for covenant purposes	$ 3,468,000,000	$ 3,616,000,000
Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	125.00%
Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as a percent)	137.50%

Debt Instrument, Covenant, Fixed Charge Coverage Ratio

+ References

No definition available.

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- Definition

Debt Instrument, Covenant, Minimum Borrowing Availability

+ References

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Remaining Borrowing Capacity, Covenant Adjusted

+ References

No definition available.

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Namespace Prefix:	snblt_
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Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

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- 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

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-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

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
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+ Details

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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

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

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-Topic 470
-SubTopic 10
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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
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-Section S99
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-Paragraph 1
-Subparagraph (SX 210.5-02(19)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Sunbelt Rentals Holdings, Inc. 10-Q