v3.26.1
Document and Entity Information
Mar. 24, 2026
Cover [Abstract]  
Document Type 8-K
Document Period End Date Mar. 24, 2026
Entity File Number 1-16305
Entity Registrant Name PUGET ENERGY INC /WA
Entity Incorporation State Country Code WA
Entity Address Address Line 1 355 110th Ave NE
Entity Address City Or Town Bellevue
Entity Address State Or Province WA
Entity Address Postal Zip Code 98004
City Area Code 425
Local Phone Number 454-6363
Entity Tax Identification Number 91-1969407
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0001085392