Long-term Debt, term loan

No definition available.

Name:	psd_LongtermDebttermloan
Namespace Prefix:	psd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
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-Name Accounting Standards Codification
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-Section S99
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

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-Publisher FASB
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-Section S99
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-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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+ Details

Name:	us-gaap_LongTermLineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Long-Term Debt (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Oct. 01, 2018	Jun. 04, 2018	Mar. 28, 2018	Mar. 05, 2018	Dec. 31, 2017	Jun. 15, 2017
Debt Instrument [Line Items]
Long-term debt	$ 5,888,172
Long-term Debt, term loan	150,000	$ 150,000				$ 0
Long-term Line of Credit, Noncurrent	11,900					102,600
Current borrowing capacity of line of credit	200,000
Senior Secured Note \| 3.650% Senior Secured Note Due 2025 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 400,000					400,000
Stated interest rate percent	3.65%
Term Loan Expansion [Member]
Debt Instrument [Line Items]
Long-term Line of Credit, Noncurrent	$ 100,000
Subsidiaries [Member]
Debt Instrument [Line Items]
Long-term debt	3,926,272
Subsidiaries [Member] \| Senior Secured Note \| 6.740% Series Due 2018
Debt Instrument [Line Items]
Long-term debt	$ 0		$ 200,000			200,000	$ 200,000
Stated interest rate percent	6.74%						6.74%
Commercial Paper			348,000
Subsidiaries [Member] \| Senior Secured Note \| 4.223% Series Due 2048 [Members] [Domain]
Debt Instrument [Line Items]
Long-term debt	$ 600,000		$ 600,000			0
Stated interest rate percent	4.223%
Subsidiaries [Member] \| Senior Secured Note \| 4.300% Series Due 2045
Debt Instrument [Line Items]
Long-term debt	$ 425,000					$ 425,000
Stated interest rate percent	4.30%
Subsidiaries [Member] \| Junior Subordinated Debt \| consent fees [Domain]
Debt Instrument [Line Items]
Long-term debt					$ 2,600
Subsidiaries [Member] \| Junior Subordinated Debt \| remaining principal paid [Domain] [Domain] [Domain]
Debt Instrument [Line Items]
Long-term debt				$ 56,600
Subsidiaries [Member] \| Junior Subordinated Debt \| 6.974% Series Due 2067
Debt Instrument [Line Items]
Long-term debt	$ 0				250,000
Stated interest rate percent				6.974%
Subsidiaries [Member] \| Junior Subordinated Debt \| debt premium [Domain]
Debt Instrument [Line Items]
Long-term debt					1
Subsidiaries [Member] \| Junior Subordinated Debt \| debt face value [Domain] [Domain]
Debt Instrument [Line Items]
Long-term debt					1
Subsidiaries [Member] \| Junior Subordinated Debt \| debt discount [Domain]
Debt Instrument [Line Items]
Long-term debt					1
Subsidiaries [Member] \| Junior Subordinated Debt \| principal paid [Domain]
Debt Instrument [Line Items]
Long-term debt					193,400
Subsidiaries [Member] \| Junior Subordinated Debt \| principal paid [Domain]
Debt Instrument [Line Items]
Long-term debt					$ 194,900