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SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Aug. 31, 2015 | May 31, 2014
Class of Stock [Line Items] |  |  |  |  |  |
Stock repurchased during period (shares) | 0 | 1,588,251 | 2,594,809 | 5,649,805 |  |
Stock repurchased during period | $ 0 | $ 119 | $ 193 | $ 381 |  |
2015 1 Billion Repurchase Program [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Stock repurchase program, authorized amount (shares) |  |  |  |  | $ 1,000 |
Stock repurchased during period (shares) | 0 | 0 | 2,594,809 | 0 |  |
Stock repurchased during period | $ 0 | $ 0 | $ 193 | $ 0 |  |
May 2014 Stock Repurchase Program [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Stock repurchase program, authorized amount (shares) |  |  |  |  |  | $ 650
Stock repurchased during period (shares) | 0 | 1,588,251 | 0 | 5,649,805 |  |
Stock repurchased during period | $ 0 | $ 119 | $ 0 | $ 381 |  |

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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: 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(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 + Details
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