Entity Tax Identification Number Entity Tax Identification Number Entity File Number Entity File Number Legal Entity [Axis] Legal Entity [Axis] Cover [Abstract] Cover [Abstract] Title of 12(b) Security Title of 12(b) Security Entities [Table] Entities [Table] Local Phone Number Local Phone Number Entity Address, Address Line One Entity Address, Address Line One Soliciting Material Soliciting Material Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Entity Address, State or Province Entity Address, State or Province Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Arizona Public Service Company [Member] Arizona Public Service Company [Member] Represents Arizona Public Service Company, which is an electric utility subsidiary of the entity. Written Communications Written Communications Entity Information [Line Items] Entity Information [Line Items] Trading Symbol Trading Symbol City Area Code City Area Code Document Period End Date Document Period End Date Amendment Flag Amendment Flag Entity Address, City or Town Entity Address, City or Town Pre-commencement Issuer Tender Offer Pre-commencement Issuer Tender Offer Entity [Domain] Entity [Domain] Security Exchange Name Security Exchange Name Document Type Document Type Pre-commencement Tender Offer Pre-commencement Tender Offer Entity Central Index Key Entity Central Index Key Entity Emerging Growth Company Entity Emerging Growth Company