XML 81 R61.htm IDEA: XBRL DOCUMENT
v3.25.1

Leases and Other Commitments - Supplemental Balance Sheet (Details) - USD ($) $ in Millions | Dec. 27, 2024 | Jun. 28, 2024 | Jun. 30, 2023
--- | --- | --- | ---
Leases and Other Commitments [Line Items] |  |  |
Operating lease right-of-use assets (included in other non-current assets) | $ 191 | $ 179 |
Current portion of long-term operating lease liabilities (included in accrued expenses) | 17 | 11 |
Long-term operating lease liabilities (included in other liabilities) | 179 | 171 |
Total operating lease liabilities | $ 196 | $ 182 |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other non-current assets | Other non-current assets |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued Liabilities, Current | Accrued Liabilities, Current |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent |
The Flash Business of Western Digital Corporation [Member] |  |  |
Leases and Other Commitments [Line Items] |  |  |
Operating lease right-of-use assets (included in other non-current assets) |  | $ 179 | $ 93
Current portion of long-term operating lease liabilities (included in accrued expenses) |  | 11 | 13
Long-term operating lease liabilities (included in other liabilities) |  | 172 | 87
Total operating lease liabilities |  | $ 183 | $ 100
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] |  | Other non-current assets | Other non-current assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] |  | Accrued Liabilities, Current | Accrued Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] |  | Other Liabilities, Noncurrent | Other Liabilities, Noncurrent

X
- References No definition available. + Details
Name: | sndk_LeasesAndOtherCommitmentsLineItems
Namespace Prefix: | sndk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseLiability
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indicates line item in statement of financial position that includes current operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
Name: | us-gaap_OperatingLeaseLiabilityCurrentStatementOfFinancialPositionExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indicates line item in statement of financial position that includes noncurrent operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
Name: | us-gaap_OperatingLeaseLiabilityNoncurrentStatementOfFinancialPositionExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
Name: | us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=sndk_TheFlashBusinessOfWesternDigitalCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |