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INCOME TAXES (Reserve for unrecognized tax benefits, interest and penalties) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits, Income Tax Penalties Expense	$ 0
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	110,000,000	$ 104,000,000	$ 110,000,000
Additions:
Prior year tax positions	5,000,000	7,000,000	4,000,000
Current year tax positions	28,000,000	11,000,000	11,000,000
Decreases:
Prior year tax positions	(3,000,000)	(6,000,000)	(12,000,000)
Settlements with taxing authorities	0	0	(9,000,000)
Lapse of statute of limitations	(39,000,000)	(6,000,000)	0
Balance at end of year	$ 101,000,000	$ 110,000,000	$ 104,000,000

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Unrecognized Tax Benefits, Additions

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Unrecognized Tax Benefits, Decreases

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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