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BORROWINGS Part 1 (Details) - USD ($) $ in Millions			12 Months Ended
		Nov. 01, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Early debt extinguishment and other related costs			$ 7	$ 0	$ 85
Total borrowings			6,168	6,540
Borrowings due within one year			243	393
Long-term borrowings			5,925	6,147
5.5% notes due November 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 0	250
Stated Interest Rate (in hundredths)			5.50%
Maturity Date			2019
Extinguishment of Debt, Amount			$ 250
2.7% notes due January 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 250	797
Stated Interest Rate (in hundredths)			2.70%
Maturity Date			2020
Extinguishment of Debt, Amount			$ 550
4.5% debentures due January 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 185	185
Stated Interest Rate (in hundredths)			4.50%
Maturity Date			2021
3.5% Notes Due Dec 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 297	0
Principal amount		$ 300
Stated Interest Rate (in hundredths)			3.50%
Maturity Date			2021
3.6% notes due August 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 739	738
Stated Interest Rate (in hundredths)			3.60%
Maturity Date			2022
1.50% notes due May 2023
Debt Instrument [Line Items]
Long-term Debt	[1]		$ 855	895
Stated Interest Rate (in hundredths)			1.50%
Maturity Date			2023
7 1/4% debentures due January 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 197	197
Stated Interest Rate (in hundredths)			7.25%
Maturity Date			2024
7 5/8% debentures due June 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 43	43
Stated Interest Rate (in hundredths)			7.625%
Maturity Date			2024
3.8% notes due March 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 691	690
Stated Interest Rate (in hundredths)			3.80%
Maturity Date			2025
1.875% notes due November 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]		$ 566	592
Stated Interest Rate (in hundredths)			1.875%
Maturity Date			2026
7.60% debentures due February 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 195	195
Stated Interest Rate (in hundredths)			7.60%
Maturity Date			2027
4.5% Notes Due Dec 2028 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 492	0
Principal amount		500
Stated Interest Rate (in hundredths)			4.50%
Maturity Date			2028
4.8% notes due September 2042 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 493	493
Stated Interest Rate (in hundredths)			4.80%
Maturity Date			2042
4.65% notes due October 2044 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 872	871
Stated Interest Rate (in hundredths)			4.65%
Maturity Date			2044
Commercial paper and short-term borrowings [Member]
Debt Instrument [Line Items]
Borrowings due within one year			$ 243	389
Line of Credit [Member]
Debt Instrument [Line Items]
Long-term Debt			50	200
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt			0	$ 5
Various Debt Instruments [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount			800
Redemption Premium			6
Early debt extinguishment and other related costs			7
Booked value of debt extinguished			799
Repayments of Debt			$ 806
Proceeds from Issuance of Debt		$ 789
[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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