Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
	Aug. 01, 2022	Apr. 28, 2022	Mar. 10, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 17, 2022	Sep. 15, 2021	Jun. 14, 2021	Sep. 26, 2019
Debt Instrument [Line Items]
Long-term Debt, term loan										$ 210,000
Total PSE long-term debt				$ 6,858,160
Long-term Line of Credit, Noncurrent				34,300	$ 33,300
Long-term debt				6,858,160
Line of Credit Facility, Maximum Borrowing Capacity				1,300,000
Debt discount, issuance costs and other				194,787	203,394
Gain (Loss) on Extinguishment of Debt				0	0	$ (13,546)
Repayment of term loan and revolving credit				0	234,000	$ 159,400
Line of Credit Facility, Maximum Amount Outstanding During Period				118,600
Line of Credit, Current				84,300
Debt Instrument, Unused Borrowing Capacity, Amount			$ 550,000
Debt Instrument, Maximum Borrowing Capacity			$ 1,000,000
Senior Secured Note | 2.379% Senior Secured Note Due 2028
Debt Instrument [Line Items]
Total PSE long-term debt				500,000	500,000				$ 500,000
Long-term debt				$ 500,000	500,000				$ 500,000
Stated interest rate percent				2.379%					2.379%
Long-term Debt, Term									7 years
Senior Secured Note | 6.000% Senior Secured Note Due 2021
Debt Instrument [Line Items]
Stated interest rate percent									6.00%
Senior Secured Note | 4.224% Senior Secured Note Due 2032
Debt Instrument [Line Items]
Total PSE long-term debt				$ 450,000	0		$ 450,000
Long-term debt				$ 450,000	0		$ 450,000
Stated interest rate percent				4.224%			4.224%
Senior Secured Note | 5.625% Senior Secured Note Due 2022
Debt Instrument [Line Items]
Stated interest rate percent		5.625%
Extinguishment of Debt, Amount		$ 457,200
Debt Instrument, Increase, Accrued Interest		7,200
Long-term debt, Principal		$ 450,000
Subsidiaries [Member]
Debt Instrument [Line Items]
Total PSE long-term debt				$ 4,823,860
Long-term debt				4,823,860
Line of Credit Facility, Maximum Borrowing Capacity				1,400,000
Debt discount, issuance costs and other				37,095	39,141
Debt Instrument, Unused Borrowing Capacity, Amount	$ 1,400,000
Debt Instrument, Maximum Borrowing Capacity	$ 1,400,000
Subsidiaries [Member] | Senior Secured Note | 4.223% Series Due 2048
Debt Instrument [Line Items]
Total PSE long-term debt				600,000	600,000
Long-term debt				$ 600,000	600,000
Stated interest rate percent				4.223%
Subsidiaries [Member] | Senior Secured Note | 2.893% Senior Secured Note Due 2051
Debt Instrument [Line Items]
Total PSE long-term debt				$ 450,000	450,000			$ 450,000
Long-term debt				$ 450,000	$ 450,000			$ 450,000
Stated interest rate percent				2.893%				2.893%
Long-term Debt, Term								30 years