XML 69 R56.htm IDEA: XBRL DOCUMENT
v3.20.2

Palo Verde Sale Leaseback Variable Interest Entities - Narrative (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) power_plant | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) power_plant Lease | Jun. 30, 2019 USD ($) | Dec. 31, 1986 Trust
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Increase in net income due to consolidation of Palo Verde Sale Leaseback Trusts | $ 4,874,000 | $ 4,874,000 | $ 9,747,000 | $ 9,747,000 |
APS |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Number of VIE lessor trusts | 3 |  | 3 |  | 3
Increase in net income due to consolidation of Palo Verde Sale Leaseback Trusts | $ 4,874,000 | 4,874,000 | $ 9,747,000 | 9,747,000 |
Palo Verde VIE | APS |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Increase in net income due to consolidation of Palo Verde Sale Leaseback Trusts | $ 5,000,000 | $ 5,000,000 | 10,000,000 | $ 10,000,000 |
Initial loss exposure to the VIE's noncontrolling equity participants during lease extension period |  |  | 304,000,000 |  |
Maximum loss exposure to the VIE's noncontrolling equity participants during lease extension period |  |  | $ 456,000,000 |  |
Palo Verde VIE | APS | Through 2023 |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Number of leases under which assets are retained | Lease |  |  | 1 |  |
Palo Verde VIE | APS | Through 2033 |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Number of leases under which assets are retained | Lease |  |  | 2 |  |
Palo Verde VIE | APS | Period 2017 through 2023 |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Annual lease payments |  |  | $ 23,000,000 |  |
Palo Verde VIE | APS | Period 2024 through 2033 |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Annual lease payments |  |  | $ 16,000,000 |  |
Palo Verde VIE | APS | Period 2024 through 2033 | Maximum |  |  |  |  |
Palo Verde Sale Leaseback Variable Interest Entities |  |  |  |  |
Lease period (up to) |  |  | 2 years |  |

X
- Definition Number of VIE lessor trusts with whom agreements have been made to sell and lease back interests in certain nuclear generating assets and related common facilities. + References No definition available. + Details
Name: | pnw_NumberOfVIELessorTrusts
Namespace Prefix: | pnw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the period of lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller. + References No definition available. + Details
Name: | pnw_SaleLeasebackTransactionLeasePeriod
Namespace Prefix: | pnw_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of leases under which assets are retained through a specified period. + References No definition available. + Details
Name: | pnw_SaleLeasebackTransactionNumberOfLeasesUnderWhichAssetsRetainedThroughSpecifiedPeriod
Namespace Prefix: | pnw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Variable Interest Entity, Entity Initial Loss Exposure to Noncontrolling Interests During Lease Extension Period, Amount + References No definition available. + Details
Name: | pnw_VariableInterestEntityEntityInitialLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount
Namespace Prefix: | pnw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Variable Interest Entity, Entity Maximum Loss Exposure to Noncontrolling Interests During Lease Extension Period, Amount + References No definition available. + Details
Name: | pnw_VariableInterestEntityEntityMaximumLossExposuretoNoncontrollingInterestsDuringLeaseExtensionPeriodAmount
Namespace Prefix: | pnw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669625-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22658-107794 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669619-108580 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=120409616&loc=SL4591551-111686 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 250 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=109234566&loc=d3e22663-107794 + Details
Name: | us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The yearly payments due under the lease entered into in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121549808&loc=d3e36991-112694 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121586228&loc=d3e50796-112755 + Details
Name: | us-gaap_SaleLeasebackTransactionAnnualRentalPayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=pnw_ArizonaPublicServiceCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnw_SaleLeasebackTransactionPeriodAxis=pnw_SaleLeasebackTransactionPeriodThrough2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnw_SaleLeasebackTransactionPeriodAxis=pnw_SaleLeasebackTransactionPeriodThrough2033Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnw_SaleLeasebackTransactionPeriodAxis=pnw_SaleLeasebackTransactionPeriod2016Through2023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pnw_SaleLeasebackTransactionPeriodAxis=pnw_SaleLeasebackTransactionPeriod2024Through2033Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |