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STOCKHOLDERS’ EQUITY AND REDEEMABLE NONCONTROLLING INTEREST (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Jul. 01, 2015
Schedule of Stockholders' Equity and Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Dividends per common share | $ 0.38 | $ 0.38 | $ 0.38 | $ 0.33 | $ 0.33 | $ 0.33 | $ 0.33 | $ 1.14 | $ 0.99 |
Share repurchase authorization remaining available | $ 522 |  |  |  |  |  |  | $ 522 |  |
Treasury stock value acquired cost method |  |  |  |  |  |  |  | $ 174 | $ 82 |
Reissuance of shares for employee benefit plan | 0.1 |  |  |  | 0.6 |  |  | 1.3 | 1.4 |
Redeemable noncontrolling interest | $ 69 |  |  | $ 0 |  |  |  | $ 69 |  |
UMass [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Stockholders' Equity and Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage by noncontrolling owners |  |  |  |  |  |  |  |  |  | 18.90%
Subsidiaries [Member] | UMass [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Stockholders' Equity and Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership percentage by noncontrolling owners |  |  |  |  |  |  |  |  |  | 18.90%
Share Repurchases Open Market [Member] |  |  |  |  |  |  |  |  |  |
Schedule of Stockholders' Equity and Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |
Treasury stock shares acquired | 0.3 |  |  |  | 0.4 |  |  | 2.4 | 1.5 |
Treasury stock acquired average cost per share | $ 69.24 |  |  |  | $ 62.03 |  |  | $ 71.27 | $ 56.84 |
Treasury stock value acquired cost method | $ 25 |  |  |  | $ 25 |  |  | $ 174 | $ 82 |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: 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 + Details
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 + Details
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