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Long-Term Debt and Liquidity Matters - Components of Long-Term Debt (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
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Long-Term Debt and Liquidity Matters [Line Items] |  |
Total long-term debt | $ 7,791,971 | $ 7,063,735
TOTAL LONG-TERM DEBT LESS CURRENT MATURITIES | 7,741,286 | 6,913,735
Pinnacle West |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | 7,844,660 |
Unamortized discount | (25) | (34)
Unamortized debt issuance cost | (2,083) | (2,924)
Total long-term debt | 947,892 | 797,042
Less current maturities | 0 | 150,000
Total long-term debt less current maturities | 947,892 | 647,042
TOTAL LONG-TERM DEBT LESS CURRENT MATURITIES | 947,892 | 647,139
Arizona Public Service Company |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | 6,843,975 |
Unamortized discount | (14,548) | (14,995)
Unamortized premium | 12,368 | 13,575
Unamortized debt issuance cost | (48,266) | (47,862)
Total long-term debt | 6,793,529 | 6,266,693
Less current maturities | 0 | 0
Total long-term debt less current maturities | 6,793,529 | 6,266,693
TOTAL LONG-TERM DEBT LESS CURRENT MATURITIES | 6,793,529 | 6,266,693
Bright Canyon Energy Corporation |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | 50,685 |
Los Alamitos equity bridge loan | 27,575 | 0
Los Alamitos construction facility | 23,110 | 0
Unamortized debt issuance cost | (135) | 0
Total long-term debt | 50,550 | 0
Less current maturities | 50,685 | 0
Total long-term debt less current maturities | (135) | 0
Pollution Control Bonds - Variable | Arizona Public Service Company |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | $ 163,975 | $ 35,975
Weighted-average interest rate (as a percent) | 3.96% | 0.22%
Total Pollution Control Bonds | Arizona Public Service Company |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | $ 163,975 | $ 35,975
Senior Unsecured Notes | Pinnacle West |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | $ 500,000 | 500,000
Interest rate (as a percent) | 1.30% |
Senior Unsecured Notes | Arizona Public Service Company |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Gross long-term debt | $ 6,680,000 | 6,280,000
Senior Unsecured Notes | Arizona Public Service Company | Minimum |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Interest rate (as a percent) | 2.20% |
Senior Unsecured Notes | Arizona Public Service Company | Maximum |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Interest rate (as a percent) | 6.88% |
Term Loan | Pinnacle West |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Term loans | $ 450,000 | $ 300,000
Term Loan | Arizona Public Service Company |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Weighted-average interest rate (as a percent) | 5.10% | 0.81%
Variable Rate Construction Facility | Bright Canyon Energy Corporation |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Weighted-average interest rate (as a percent) | 5.71% |
Bridge Loan | Bright Canyon Energy Corporation |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |
Weighted-average interest rate (as a percent) | 5.18% |

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- Definition Sum of the carrying values as of the balance sheet date of total long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date. + References No definition available. + Details
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- Definition Short-Term financing which is expected to be paid back relatively quickly, such as by a subsequent longer-term loan. Also called swing loan or bridge financing. + 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)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(1)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans. + 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 -Subparagraph (SX 210.5-02(19)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- 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 https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: 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(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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