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FAIR VALUE MEASUREMENTS - Part 1 (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] |  |
Cash held - offsetting derivative net asset positions under master-netting arrangements | $ 0 | $ 0
Cash posted - total | 110,000 | 157,000
Cash posted - offsetting derivative net liability positions under master-netting arrangements | 20,100 | 99,600
Cash posted - remaining in excess of derivative net liability positions included in consolidated Balance Sheets | 89,900 | 57,400
Long-term debt, fair value | 11,500,000 | 15,600,000
Long-term debt | 12,900,000 | 13,600,000
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member] |  |
Derivative assets |  |
Derivative asset, fair value, gross | 304,076 |
Derivative liabilities |  |
Derivative liability, fair value, gross | (256,757) |
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member] | Financial Contracts |  |
Derivative assets |  |
Derivative asset, fair value, gross | 236,699 | 204,161
Derivative liabilities |  |
Derivative liability, fair value, gross | (256,757) | (303,740)
Fair Value, Recurring [Member] | Gross Fair Value Measurement [Member] | Interest Rate Contracts |  |
Derivative assets |  |
Interest-rate contracts | 67,377 |
Derivative liabilities |  |
Interest-rate contracts |  | (145,524)
Fair Value, Recurring [Member] |  |
Derivative assets |  |
Derivative assets | 67,377 | 0
Derivative assets netting | (236,699) | (204,161)
Derivative liabilities |  |
Derivative liabilities | 0 | (145,524)
Derivative liabilities netting | 256,757 | 303,740
Fair Value, Recurring [Member] | Financial Contracts |  |
Derivative assets |  |
Derivative assets | 0 | 0
Derivative assets netting | (236,699) | (204,161)
Derivative liabilities |  |
Derivative liabilities | 0 | 0
Derivative liabilities netting | 256,757 | 303,740
Fair Value, Recurring [Member] | Interest Rate Contracts |  |
Derivative assets |  |
Interest-rate contracts | 67,377 |
Derivative assets netting | 0 |
Derivative liabilities |  |
Interest-rate contracts |  | (145,524)
Derivative liabilities netting |  | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Derivative assets |  |
Derivative asset, fair value, gross | 10,959 | 22,019
Derivative liabilities |  |
Derivative liability, fair value, gross | (112,578) | (67,226)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Financial Contracts |  |
Derivative assets |  |
Derivative asset, fair value, gross | 10,959 | 22,019
Derivative liabilities |  |
Derivative liability, fair value, gross | (112,578) | (67,226)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Contracts |  |
Derivative assets |  |
Interest-rate contracts | 0 |
Derivative liabilities |  |
Interest-rate contracts |  | 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Derivative assets |  |
Derivative asset, fair value, gross | 201,733 | 172,833
Derivative liabilities |  |
Derivative liability, fair value, gross | (104,047) | (258,446)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Financial Contracts |  |
Derivative assets |  |
Derivative asset, fair value, gross | 134,356 | 172,833
Derivative liabilities |  |
Derivative liability, fair value, gross | (104,047) | (112,922)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Contracts |  |
Derivative assets |  |
Interest-rate contracts | 67,377 |
Derivative liabilities |  |
Interest-rate contracts |  | (145,524)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Derivative assets |  |
Derivative asset, fair value, gross | 91,384 | 9,309
Derivative liabilities |  |
Derivative liability, fair value, gross | (40,132) | (123,592)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Financial Contracts |  |
Derivative assets |  |
Derivative asset, fair value, gross | 91,384 | 9,309
Derivative liabilities |  |
Derivative liability, fair value, gross | (40,132) | (123,592)
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Contracts |  |
Derivative assets |  |
Interest-rate contracts | $ 0 |
Derivative liabilities |  |
Interest-rate contracts |  | $ 0

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