Carrying value of debt instrument.

No definition available.

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Namespace Prefix:	spwr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Name Accounting Standards Codification
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Balance Type:	na
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.

+ References

No definition available.

+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Period Type:	instant

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- Details

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- Details

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Debt and Credit Sources - Schedule of Debt (Details) - USD ($)	Apr. 04, 2021	Jan. 03, 2021	Dec. 31, 2015	Jun. 30, 2014	Dec. 31, 2010
Debt Instrument [Line Items]
Face Value	$ 668,351,000
CEDA loan
Debt Instrument [Line Items]
Face Value	30,000,000	$ 30,000,000			$ 30,000,000.0
Short-term	29,616,000	0
Long-term	0	29,219,000
Total	29,616,000	29,219,000
Interest rate					8.50%
Non-recourse financing and other debt
Debt Instrument [Line Items]
Face Value	153,195,000	126,283,000
Short-term	65,108,000	97,059,000
Long-term	86,456,000	27,228,000
Total	151,564,000	124,287,000
Convertible Debt
Debt Instrument [Line Items]
Face Value	487,479,000	487,634,000
Convertible Debt \| 0.875% debentures due 2021
Debt Instrument [Line Items]
Face Value	62,484,000	62,634,000		$ 400,000,000.0
Short-term	62,456,000	62,531,000
Long-term	0	0
Total	62,456,000	62,531,000
Interest rate				0.875%
Convertible Debt \| 4.00% debentures due 2023
Debt Instrument [Line Items]
Face Value	424,995,000	425,000,000	$ 425,000,000.0
Short-term	0	0
Long-term	422,749,000	422,443,000
Total	422,749,000	422,443,000
Interest rate			4.00%
Convertible and Loans
Debt Instrument [Line Items]
Face Value	670,674,000	643,917,000
Short-term	157,180,000	159,590,000
Long-term	509,205,000	478,890,000
Total	$ 666,385,000	$ 638,480,000