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BORROWINGS Part 1 (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Early debt extinguishment costs				$ 1	$ 0	$ 7
Total borrowings		$ 5,618	$ 5,782	5,618	5,782
Borrowings due within one year		349	171	349	171
Long-term borrowings		$ 5,269	5,611	$ 5,269	5,611
2.7% notes due January 2020 [Member]
Debt Instrument [Line Items]
Stated Interest Rate (in hundredths)		2.70%		2.70%
Maturity Date				2020
Extinguishment of Debt, Amount			250
4.5% debentures due January 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 0	185	$ 0	185
Stated Interest Rate (in hundredths)		4.50%		4.50%
Maturity Date				2021
Extinguishment of Debt, Amount		$ 185
3.5% Notes Due Dec 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 299	298	$ 299	298
Stated Interest Rate (in hundredths)		3.50%		3.50%
Maturity Date				2021
3.6% notes due August 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 744	741	$ 744	741
Stated Interest Rate (in hundredths)		3.60%		3.60%
Maturity Date				2022
1.50% notes due May 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]	$ 919	840	$ 919	840
Stated Interest Rate (in hundredths)		1.50%		1.50%
Maturity Date				2023
7 1/4% debentures due January 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 198	198	$ 198	198
Stated Interest Rate (in hundredths)		7.25%		7.25%
Maturity Date				2024
7 5/8% debentures due June 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 43	43	$ 43	43
Stated Interest Rate (in hundredths)		7.625%		7.625%
Maturity Date				2024
3.8% notes due March 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 701	695	$ 701	695
Stated Interest Rate (in hundredths)		3.80%		3.80%
Maturity Date				2025
1.875% notes due November 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]	$ 609	556	$ 609	556
Stated Interest Rate (in hundredths)		1.875%		1.875%
Maturity Date				2026
7.60% debentures due February 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 195	195	$ 195	195
Stated Interest Rate (in hundredths)		7.60%		7.60%
Maturity Date				2027
4.5% Notes Due Dec 2028 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 493	493	$ 493	493
Stated Interest Rate (in hundredths)		4.50%		4.50%
Maturity Date				2028
4.8% notes due September 2042 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 493	493	$ 493	493
Stated Interest Rate (in hundredths)		4.80%		4.80%
Maturity Date				2042
4.65% notes due October 2044 [Member]
Debt Instrument [Line Items]
Long-term Debt		$ 874	874	$ 874	874
Stated Interest Rate (in hundredths)		4.65%		4.65%
Maturity Date				2044
Commercial paper and short-term borrowings [Member]
Debt Instrument [Line Items]
Borrowings due within one year		$ 50	$ 171	$ 50	$ 171
[1] The carrying value of the euro-denominated 1.50% notes due May 2023 and 1.875% notes due November 2026 will fluctuate with changes in the euro exchange rate. The carrying value of these euro-denominated borrowings have been designated as non-derivative net investment hedges of a portion of the Company's net investments in euro functional-currency denominated subsidiaries to offset foreign currency fluctuations.

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