Regulation and Rates Public Utilities, Regulatory Proceeding (Tables) - Subsidiaries [Member]

3 Months Ended

Mar. 31, 2023

Purchased Gas Adjustment [Member] | Natural Gas

Regulation and Rates [Line Items]

Schedule of PGA Receivable Payable

The following table presents the PGA mechanism balances and activity at March 31, 2023 and December 31, 2022:

Puget Energy and Puget Sound Energy
(Dollars in Thousands)	At March 31,		At December 31,
PGA (liability)/receivable balance and activity	2023		2022
PGA (liability)/receivable beginning balance	$	(3,536)	$	57,935
Actual natural gas costs	138,178		457,950
Allowed PGA recovery	(234,372)		(496,879)
Interest	(348)		1,674
Refund/interest from counterparty settlement	(2,836)		(24,216)
PGA (liability)/receivable ending balance	$	(102,914)	$	(3,536)

PCA Mechanism [Member] | Electricity

Regulation and Rates [Line Items]

Schedule of Graduated Scale of Rate Adjustment Mechanism

Effective January 1, 2017, the following graduated scale is used in the PCA mechanism:

	Company’s Share				Customers' Share
Annual Power Cost Variability	Over		Under		Over		Under
Over or under collected by up to $17 million	100	%	100	%	—	%	—	%
Over or under collected by between $17 million - $40 million	35		50		65		50
Over or under collected beyond $40 + million	10		10		90		90