Unaudited Condensed Consolidated Statements of Stockholders’ Deficit (Parentheticals)	6 Months Ended
Jun. 28, 2026
Accumulated Deficit
Senior unsecured convertible notes for shares of common stock	7.00%

Percentage of senior unsecured convertible notes for shares of common stock.

No definition available.

Name:	spwr_SeniorUnsecuredConvertibleNotesForSharesOfCommonStock
Namespace Prefix:	spwr_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration