Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

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-Section 55

-Paragraph 8

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Balance Type:	credit
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- 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))

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

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-Publisher FASB

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- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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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 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Section 40

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DEBT (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended
	Mar. 31, 2015	Apr. 30, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,200us-gaap_DebtInstrumentFaceAmount		$ 1,200us-gaap_DebtInstrumentFaceAmount
Unamortized discount	18		18
Debt issuance cost	11us-gaap_DebtIssuanceCosts
Subsequent Event [Member]
Debt Instrument [Line Items]
Pre tax losses on extinguishment of debt		64
Other Income (Expense), Net [Member]
Debt Instrument [Line Items]
Pre tax losses on extinguishment of debt	79
2.50% Senior Notes due March 2020 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	300		300
Debt instrument, interest rate	2.50%		2.50%
Unamortized discount	1		1
3.50% Senior Notes due March 2025 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	600		600
Debt instrument, interest rate	3.50%		3.50%
4.70% Senior Notes due March 2045 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	300		300
Debt instrument, interest rate	4.70%		4.70%
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]
Debt instrument, interest rate	6.95%		6.95%
Extinguishment of debt, amount			176
5.75% Senior Notes Due 2040 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	5.75%		5.75%
Extinguishment of debt, amount			74
3.20% Senior Notes Due 2016 [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	3.20%		3.20%
3.20% Senior Notes Due 2016 [Member] \| Subsequent Event [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate		3.20%
Extinguishment of debt, amount		$ 150