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BORROWINGS Part 2 (Details) Credit Facility and Commercial Paper Borrowings - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Credit Facilities [Abstract] |  |
Borrowings due within one year | $ 1,046 | $ 349
Revolving Credit Facility [Member] |  |
Credit Facilities [Abstract] |  |
Line of Credit Facility, Expiration Date | Oct. 31, 2023 |
Line of Credit Facility, Maximum Borrowing Capacity | $ 1,500 |
Line of Credit Facility, Maximum Month-end Outstanding Amount | 0 | 0
Commercial Paper [Member] |  |
Credit Facilities [Abstract] |  |
Commercial Paper | $ 0 | $ 50
Debt, Weighted Average Interest Rate |  | 0.25%

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