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RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Part 3 (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Realized Loss on Settled Interest Rate Swaps Recorded in AOCI |  |  | $ 48,300
Notional Amount Of Cash Flow Hedge Instruments Settled | $ 750,000 |  | 1,300,000
Derivative, Net Liability Position, Aggregate Fair Value | 0 |  |
Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss) | 121,365 | $ (264,764) | (214,315)
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives | (260,952) | (298,133) | (27,410)
Commodity Contract | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss) | (84,807) | (322,648) | (5,699)
Commodity Contract | Commodity sales revenues | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives | (483,625) | (731,793) | 85,436
Commodity Contract | Cost of sales and fuel | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives | 256,888 | 473,612 | (19,170)
Interest Rate Contracts | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Unrealized change in fair value of cash flow hedges in other comprehensive income (loss) | 206,172 | 57,884 | (208,616)
Interest Rate Contracts | Interest Expense [Member] | Cash Flow Hedging [Member] |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |
Change in fair value of cash flow hedges reclassified from accumulated other comprehensive loss into net income on derivatives | $ (34,215) | $ (39,952) | $ (93,676)

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- Definition Aggregate notional amount specified by the settled derivative(s) designated as cash flow hedge instruments, expressed as an absolute value + References No definition available. + Details
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