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BORROWINGS Part 1 (Details) Schedule of Long-term Debt Instruments - USD ($) $ in Millions		6 Months Ended	9 Months Ended	12 Months Ended
		Jun. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total Borrowings			$ 6,626	$ 6,540
Borrowings due within one year			728	393
Long-term borrowings			5,898	6,147
5.5% notes due November 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 250	250
Debt Instrument, Interest Rate, Stated Percentage			5.50%
Debt Instrument, Maturity Date			Nov. 30, 2019
2.7% notes due January 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 798	797
Debt Instrument, Interest Rate, Stated Percentage			2.70%
Debt Instrument, Maturity Date			Jan. 31, 2020
4.5% notes due January 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 185	185
Debt Instrument, Interest Rate, Stated Percentage			4.50%
Debt Instrument, Maturity Date			Jan. 31, 2021
3.6% notes due August 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 739	738
Debt Instrument, Interest Rate, Stated Percentage			3.60%
Debt Instrument, Maturity Date			Aug. 31, 2022
1.5% notes due May 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]		$ 865	895
Debt Instrument, Interest Rate, Stated Percentage			1.50%
Debt Instrument, Maturity Date			May 31, 2023
7 1/4% debentures due January 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 198	197
Debt Instrument, Interest Rate, Stated Percentage			7.25%
Debt Instrument, Maturity Date			Jan. 31, 2024
7 5/8% debentures due June 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 43	43
Debt Instrument, Interest Rate, Stated Percentage			7.625%
Debt Instrument, Maturity Date			Jun. 30, 2024
3.8% notes due March 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 688	690
Debt Instrument, Interest Rate, Stated Percentage			3.80%
Debt Instrument, Maturity Date			Mar. 31, 2025
1.875% notes due 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	[1]		$ 572	592
Debt Instrument, Interest Rate, Stated Percentage			1.875%
Debt Instrument, Maturity Date			Nov. 30, 2026
7.60% debentures due February 2027 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 195	195
Debt Instrument, Interest Rate, Stated Percentage			7.60%
Debt Instrument, Maturity Date			Feb. 28, 2027
4.8% notes due September 2042 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 493	493
Debt Instrument, Interest Rate, Stated Percentage			4.80%
Debt Instrument, Maturity Date			Sep. 30, 2042
4.65% notes due October 2044 [Member]
Debt Instrument [Line Items]
Long-term Debt			$ 872	871
Debt Instrument, Interest Rate, Stated Percentage			4.65%
Debt Instrument, Maturity Date			Oct. 31, 2044
Commercial paper and short-term borrowings [Member]
Debt Instrument [Line Items]
Borrowings due within one year			$ 727	389
Credit Facility
Debt Instrument [Line Items]
Long-term Debt			0	200
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt			1	5
Secured Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity			250
Line of Credit Facility, Maximum Month-end Outstanding Amount		$ 25	$ 0	$ 0
[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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Contractual interest rate for funds borrowed, under the debt agreement.

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