LONG-TERM DEBT AND CREDIT AGREEMENTS (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Total long-term debt, including current portion	$ 6,131,000,000	$ 6,985,000,000
Less current portion	(577,000,000)	(939,000,000)
Total Noncurrent Debt	5,554,000,000	6,046,000,000
Long Term Debt By Maturity [Abstract]
2016	577,000,000
2017	490,000,000
2018	910,000,000
2019	902,000,000
2020	2,000,000
Thereafter	3,250,000,000
Total long-term debt, including current portion	6,131,000,000	6,985,000,000
Less current portion	(577,000,000)	(939,000,000)
Total Long-term debt	$ 5,554,000,000	6,046,000,000
364-Day Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Facility initiation date	Sep. 30, 2015
Facility expiration date	Sep. 28, 2016
Line of credit facility, current borrowing capacity	$ 3,000,000,000
Borrowing capacity description	364-Day Credit Agreement is maintained for general corporate purposes
Floating Rate Notes Due 2015 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 0	700,000,000
Maturity date of debt instrument	Nov. 17, 2015
Notes 5.40% due 2016 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 400,000,000	400,000,000
Various interest rates	5.40%
Maturity date of debt instrument	Mar. 15, 2016
Notes 5.30% due 2017 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 400,000,000	400,000,000
Various interest rates	5.30%
Maturity date of debt instrument	Mar. 15, 2017
Notes 5.30% due 2018 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 900,000,000	900,000,000
Various interest rates	5.30%
Maturity date of debt instrument	Mar. 01, 2018
Notes 5.00% due 2019 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 900,000,000	900,000,000
Various interest rates	5.00%
Maturity date of debt instrument	Feb. 15, 2019
Notes 4.25% due 2021 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 800,000,000	800,000,000
Various interest rates	4.25%
Maturity date of debt instrument	Mar. 01, 2021
Notes 3.35% due 2023 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 300,000,000	300,000,000
Various interest rates	3.35%
Maturity date of debt instrument	Dec. 01, 2023
Notes 5.375% Due 2041 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 600,000,000	600,000,000
Various interest rates	5.375%
Maturity date of debt instrument	Mar. 01, 2041
Industrial development bond obligations, floating rate maturing at various dates through 2037 [Member]
Debt Instrument [Line Items]
Industrial development bond	$ 30,000,000	30,000,000
Maturity date of debt instrument	Dec. 31, 2037
Debentures 6.625% due 2028 [Member]
Debt Instrument [Line Items]
Debentures	$ 216,000,000	216,000,000
Various interest rates	6.625%
Maturity date of debt instrument	Jun. 15, 2028
Debentures 9.065% due 2033 [Member]
Debt Instrument [Line Items]
Debentures	$ 51,000,000	51,000,000
Various interest rates	9.065%
Maturity date of debt instrument	Jun. 01, 2033
Notes 5.70% due 2036 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 550,000,000	550,000,000
Various interest rates	5.70%
Maturity date of debt instrument	Mar. 15, 2036
Notes 5.70% due 2037 [Member]
Debt Instrument [Line Items]
Senior Notes	$ 600,000,000	600,000,000
Various interest rates	5.70%
Maturity date of debt instrument	Mar. 15, 2037
Other including capitalized leases and debt issuance costs, .6% to 9.5% maturing at various dates through 2023 [Member]
Debt Instrument [Line Items]
Other long term debt	$ 384,000,000	$ 538,000,000
Interest rate range minimum	0.60%
Interest rate range maximum	9.50%
Maturity date of debt instrument	Dec. 31, 2023
Syndicate Of Banks [Member]
Line Of Credit Facility [Line Items]
Facility initiation date	Jul. 10, 2015
Facility expiration date	Jul. 10, 2020
Line of credit facility, current borrowing capacity	$ 4,000,000,000
Line of credit facility, maximum borrowing capacity	4,500,000,000
Line Of Credit Facility Previous Borrowing Capacity	$ 4,000,000,000