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LONG-TERM DEBT (Details) $ in Millions | 1 Months Ended | 12 Months Ended | 24 Months Ended
--- | --- | --- | ---
Aug. 31, 2020 JPY (¥) numberOfPayments | Feb. 29, 2020 USD ($) | May 31, 2017 USD ($) | May 31, 2016 USD ($) | Jun. 30, 2015 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | May 31, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Partially funded repurchase amount |  |  |  |  |  |  |  | $ 2,800 |
Total repurchase amount previously announced |  |  |  |  |  |  |  | 3,000 |
Repayments debt |  |  |  |  |  | $ 1,370 | $ 42 | 96 |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  |  |  |  |  | $ 24 | $ 21 |  |
Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  |  |  |  | $ 1,800 |
Debt issuance costs and discounts |  |  | $ 24 |  |  |  |  |  | $ 24
Senior notes [Member] | Debt redemption, period one [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  |  |  |  |  |  | 101.00%
Senior notes [Member] | Debt redemption, period two [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Debt redemption percentage |  |  |  |  |  |  |  |  | 100.00%
Senior notes [Member] | Unsecured Senior Notes, 4.20% [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  |  | $ 400 |  |  |  |  |  | $ 400
Debt, term |  |  | 30 years |  |  |  |  |  |
Stated interest rate |  |  | 4.20% |  |  | 4.20% |  |  | 4.20%
Senior notes [Member] | Unsecured Senior Notes, 3.75% [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  | $ 400 |  |  |  |  |
Debt, term |  |  |  | 30 years |  |  |  |  |
Stated interest rate |  |  |  | 3.75% |  | 3.75% |  |  |
Senior notes [Member] | Unsecured Senior Notes, 4.60% [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  |  |  |  | $ 1,000 |  |  |  |
Debt, term |  |  |  |  | 30 years |  |  |  |
Stated interest rate |  |  |  |  | 4.60% | 4.60% |  |  |
Senior notes [Member] | Unsecured Senior Notes, 1.85% |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt |  | $ 500 |  |  |  |  |  |  |
Stated interest rate |  | 1.85% |  |  |  | 1.85% |  |  |
Basis points |  | 0.10% |  |  |  |  |  |  |
Debt redemption percentage |  | 100.00% |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net |  | $ 5 |  |  |  |  |  |  |
Japanese Yen Term Loan | Term Loan Agreement, 0.05% [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Face amount of debt | ¥ | ¥ 9,000,000,000 |  |  |  |  |  |  |  |
Debt Instrument, Number Of Semi-Annual Principal Payments | numberOfPayments | 4 |  |  |  |  |  |  |  |
Long-term Debt, Weighted Average Interest Rate, over Time | 0.05% |  |  |  |  |  |  |  |
Minimum | Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  |  |  |  |  |  |  |  | 20.00%
Maximum | Senior notes [Member] |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |
Basis points |  |  |  |  |  |  |  |  | 25.00%

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