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RISK MANAGEMENT AND HEDGING ACTIVITIES USING DERIVATIVES - Part 1 (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2020 | Dec. 31, 2021
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | $ 178,153 | $ 178,153 |  | $ 204,161
(Liabilities) | (124,566) | (124,566) |  | (449,264)
Cash posted - offsetting derivative net liability positions under master-netting arrangements |  |  |  | 99,600
Realized Gain on Settled Interest Rate Swaps Recorded in AOCI | 28,100 |  |  |
Notional Amount Of Cash Flow Hedge Instruments Settled |  | 750,000 | $ 1,300,000 |
Notional Amount of Cash Flow Hedge Instruments Terminated | 375,000 |  |  |
Notes Payable from Public Offering Due 2032 |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Senior Notes, Noncurrent | 750,000 | 750,000 |  |
Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 177,595 | 177,595 |  | 204,161
(Liabilities) | (124,326) | (124,326) |  | (449,264)
Derivatives not designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 558 | 558 |  | 0
(Liabilities) | (240) | (240) |  | 0
Interest Rate Contracts | Derivatives designated as hedging instruments | Purchased/Payor |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount | 400,000 | 400,000 |  | 1,100,000
Natural Gas Pipelines |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Fair Value, Net | 0 | 0 |  | 0
Other Current Assets [Member] | Commodity Contract | Financial contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 160,390 | 160,390 |  |
(Liabilities) | (123,121) | (123,121) |  |
Other Current Assets [Member] | Commodity Contract | Financial contracts | Derivatives not designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 558 | 558 |  | 0
(Liabilities) | (240) | (240) |  | 0
Other Current Assets [Member] | Interest Rate Contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 10,918 | 10,918 |  | 0
Other Current Liabilities [Member] | Interest Rate Contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
(Liabilities) | 0 | 0 |  | (145,524)
Fully Netted Assets/Liabilities | Commodity Contract | Financial contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets |  |  |  | 204,161
(Liabilities) |  |  |  | (303,740)
Other Assets [Member] | Commodity Contract | Financial contracts | Derivatives designated as hedging instruments |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Assets | 6,287 | 6,287 |  | 0
(Liabilities) | (1,205) | (1,205) |  | 0
Interest Rate Contracts | Cash Flow Hedging [Member] | Forward contracts | Forecasted Debt Issuances [Member] |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |
Derivative, Notional Amount | $ 400,000 | $ 400,000 |  | $ 1,100,000

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