Revenue (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 13, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer, Including Assessed Tax		$ 3,734,132	$ 3,222,391	$ 3,311,090
Regulated Operating Revenue, Other		66,620	26,121	28,718
Revenues		3,805,661	3,326,450	3,401,130
Puget LNG [Member]
Revenue, Remaining Performance Obligation, Amount		195,566
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction		15,359
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, 2025		19,710
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, 2026		19,454
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, 2027		19,454
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, 2028		19,454
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Thereafter		$ 102,135
Remaining Contract Term, PLNG		10 years
Subsidiaries [Member]
Regulated Operating Revenue, Other		$ 66,620	26,121	28,718
Revenues		3,805,661	3,326,450	3,401,130
Other Non-Customer Revenue	$ 23,200
Nonutility Revenue	23,200
Nonutility Expense	$ 12,900
Electricity, US Regulated [Member]
Revenue from Contract with Customer, Including Assessed Tax		2,348,356	2,106,122	2,132,522
Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Including Assessed Tax		1,036,411	938,061	870,457
Other Revenue From Contracts with Customers [Member]
Revenue from Contract with Customer, Including Assessed Tax		349,365	178,208	308,111
Decoupling over-collection [Member]
Regulated Operating Revenue, Other		(31,510)	35,006	(18,634)
Other Non-606 Revenue [Member]
Regulated Operating Revenue, Other		$ 103,039	$ 69,053	$ 108,674