Notes Payable, Net

No definition available.

Name:	sndk_NotesPayableNet
Namespace Prefix:	sndk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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

- 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

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Balance Type:	credit
Period Type:	instant

- Definition

Percentage added to reference rate used to compute variable rate on loan receivable.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansReceivableBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amortized cost, after allowance for credit loss, of financing receivable classified as current. Excludes net investment in lease.

+ References

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+ Details

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

- Definition

Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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

- Definition

The principal amount of the receivable or note before consideration of the discount or premium.

+ References

+ Details

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

- 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.

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

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix:
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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- Details

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Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=sndk_RevolverCreditAgreement2024Member
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Balance Type:
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- Details

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Balance Type:
Period Type:

- Details

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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_VariableRateAxis=sndk_LondonInterbankOfferedRate1Member
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Balance Type:
Period Type:

- Details

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- Details

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Period Type:

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Related Parties and Related Commitments and Contingencies - Related Party Debt (Details) - Related Party - USD ($) $ in Millions	6 Months Ended
	Dec. 27, 2024	Sep. 27, 2024	Jun. 28, 2024	Aug. 20, 2021	Oct. 03, 2019	Nov. 25, 2014	Apr. 29, 2014
Related Party Transaction [Line Items]
Notes due from Parent	$ 0		$ (102)
Notes due to Parent	553		814
Total Notes due to Parent, net	553		712
Notes receivable
Related Party Transaction [Line Items]
Notes due from Parent	0		(102)
Line of Credit \| Revolving Credit Facility \| Revolver Credit Agreement, 2024
Related Party Transaction [Line Items]
Notes due to Parent	$ 553		0
Maximum borrowing capacity		$ 1,000
Line of Credit \| Revolving Credit Facility \| Revolver Credit Agreement, 2024 \| SOFR
Related Party Transaction [Line Items]
Variable interest rate	1.60%
Line of Credit \| Revolving Credit Facility \| Revolver Credit Agreement, 2021
Related Party Transaction [Line Items]
Notes due to Parent	$ 0		77
Maximum borrowing capacity				$ 100
Line of Credit \| Revolving Credit Facility \| Revolver Credit Agreement, 2021 \| LIBOR
Related Party Transaction [Line Items]
Variable interest rate	1.50%
Notes Payable, Other Payables \| 2014 $500M Notes
Related Party Transaction [Line Items]
Notes due to Parent	$ 0		475
Debt instrument, face amount						$ 500
Variable interest rate	2.00%
Notes Payable, Other Payables \| 2014 $42B Yen Notes
Related Party Transaction [Line Items]
Notes due to Parent	$ 0		262
Debt instrument, face amount							$ 42,000
Notes Payable, Other Payables \| 2014 $42B Yen Notes \| TIBOR
Related Party Transaction [Line Items]
Variable interest rate	0.35%
Revolving Credit Facility \| Notes receivable
Related Party Transaction [Line Items]
Notes due from Parent	$ 0		$ (102)
Notes receivable, related parties					$ 101
Revolving Credit Facility \| TIBOR \| Notes receivable
Related Party Transaction [Line Items]
Basis spread on variable rate					0.35%