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LONG-TERM DEBT - Additional Information (Details) | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2022 USD ($) | Sep. 30, 2021 USD ($) | Aug. 31, 2021 USD ($) | Mar. 31, 2021 USD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Jan. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  |  | $ 164,000,000 | $ 0 | $ 164,000,000 | $ 0 | $ 0 |
Maximum aggregate borrowings under credit facility (up to) |  |  |  |  |  |  | 4,500,000,000 |  |  |
Outstanding borrowings |  |  |  |  |  | $ 900,000,000 | 1,050,000,000 | 900,000,000 |  |
Cash paid for interest, net of amounts capitalized |  |  |  |  |  |  | 391,000,000 | $ 377,000,000 | $ 348,000,000 |
Series N Notes, interest rate of 3.1%, face amount of $400, redeemed August 9, 2021 (effective interest rate of 3.4%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt retired |  |  | $ 400,000,000 |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Borrowings under credit agreement |  |  |  |  |  |  | 1,700,000,000 |  |  |
Repayments under credit agreement |  |  |  |  |  |  | 1,500,000,000 |  |  |
Outstanding borrowings |  |  |  |  |  |  | $ 1,100,000,000 |  |  |
Senior Notes | Series Q Notes, interest rate of 2.3%, face amount of $399, matured January 15, 2022 (effective interest rate of 2.5%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 2.30% |  |  |
Face amount |  |  |  |  |  |  | $ 399,000,000 |  |  |
Senior Notes | Series Q Notes, interest rate of 2.3%, face amount of $399, matured January 15, 2022 (effective interest rate of 2.5%) | Subsequent Event |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt retired | $ 404,000,000 |  |  |  |  |  |  |  |  |
Senior Notes | Series EE Notes, interest rate of 5.8%, face amount of $600, maturing May 1, 2025 (effective interest rate of 6.0%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Debt retired |  | $ 1,000,000,000 |  |  |  |  |  |  |  |
Interest rate |  | 5.75% |  |  | 5.75% |  | 5.80% |  |  |
Face amount |  |  |  |  |  |  | $ 600,000,000 |  |  |
Senior Notes | Series II Notes, interest rate of 2.8%, face amount of $700, maturing October 15, 2033 (effective interest rate of 2.8%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  | 2.75% |  |  | 2.75% |  | 2.80% |  |  |
Face amount |  | $ 700,000,000 |  |  | $ 700,000,000 |  | $ 700,000,000 |  |  |
Net proceeds |  | $ 693,000,000 |  |  |  |  |  |  |  |
Senior Notes | Series N Notes, interest rate of 3.1%, face amount of $400, redeemed August 9, 2021 (effective interest rate of 3.4%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 3.10% |  |  |
Face amount |  |  |  |  |  |  | $ 400,000,000 |  |  |
Senior Notes | Series HH Notes, interest rate of 2.9%, face amount of $1,100, maturing April 15, 2031 (effective interest rate of 3.0%) |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 2.85% |  |  | 2.90% |  |  |
Face amount |  |  |  | $ 1,100,000,000 |  |  | $ 1,100,000,000 |  |  |
Net proceeds |  |  |  | $ 1,089,000,000.000 |  |  |  |  |  |
Line of Credit | Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum leverage ratio |  |  |  |  |  |  |  |  |  | 5.50
Line of Credit | Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum leverage ratio |  |  |  |  |  |  |  |  |  | 4.00

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