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DEBT (Retirement of Debt) (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Apr. 30, 2015	Mar. 31, 2015	Dec. 31, 2015	Dec. 31, 2014
Other (Expense) Income, Net [Member]
Debt Instrument [Line Items]
Losses on extinguishment of debt			$ 144
6.95% Senior Notes due July 2037 and 5.75% Senior Notes due January 2040 [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount		$ 250
6.95% Senior Notes Due 2037 [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount		176
Debt instrument, interest rate			6.95%
5.75% Senior Notes Due 2040 [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount		$ 74
Debt instrument, interest rate			5.75%
5.45% Senior Notes Due 2015 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	5.45%		5.45%	5.45%
3.20% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Extinguishment of debt, amount	$ 150
Debt instrument, interest rate	3.20%		3.20%
6.40% Senior Notes Due 2017 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	6.40%			6.40%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

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- Definition

Gross amount of debt extinguished.

+ References

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

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