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SHARE-BASED COMPENSATION PLANS AND AWARDS Part 2 (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |  |  |
Share-based compensation expense, retirement eligibility preceding the requisite vesting period | $ 2 | $ 2 | $ 2
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Number Outstanding at end of period (in shares) | 2,614,100 |  |
Weighted-Average Remaining Contractual Life (in years) | 7 years 19 days |  |
Weighted-Average Exercise Price (in dollars per share) | $ 70 |  |
Number Exercisable at end of period (in shares) | 1,335,500 |  |
Weighted-Average Exercise Price (in dollars per share) | $ 65 |  |
Exercise price of options lower range (in dollars per share) | 18 |  |
Exercise prices of options upper range (in dollars per share) | $ 87 |  |
Prices of $18-$35 [Member] |  |  |
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Number Outstanding at end of period (in shares) | 62,500 |  |
Weighted-Average Remaining Contractual Life (in years) | 1 year 7 months 26 days |  |
Weighted-Average Exercise Price (in dollars per share) | $ 27 |  |
Number Exercisable at end of period (in shares) | 62,500 |  |
Weighted-Average Exercise Price (in dollars per share) | $ 27 |  |
Exercise price of options lower range (in dollars per share) | 18 |  |
Exercise prices of options upper range (in dollars per share) | $ 35 |  |
Prices of $36-$50 [Member] |  |  |
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Number Outstanding at end of period (in shares) | 271,500 |  |
Weighted-Average Remaining Contractual Life (in years) | 3 years 1 month 25 days |  |
Weighted-Average Exercise Price (in dollars per share) | $ 39 |  |
Number Exercisable at end of period (in shares) | 271,500 |  |
Weighted-Average Exercise Price (in dollars per share) | $ 39 |  |
Exercise price of options lower range (in dollars per share) | 36 |  |
Exercise prices of options upper range (in dollars per share) | $ 50 |  |
Prices of $51-$73 [Member] |  |  |
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Number Outstanding at end of period (in shares) | 823,300 |  |
Weighted-Average Remaining Contractual Life (in years) | 7 years 19 days |  |
Weighted-Average Exercise Price (in dollars per share) | $ 67 |  |
Number Exercisable at end of period (in shares) | 454,000 |  |
Weighted-Average Exercise Price (in dollars per share) | $ 68 |  |
Exercise price of options lower range (in dollars per share) | 51 |  |
Exercise prices of options upper range (in dollars per share) | $ 73 |  |
Prices of $74-$87 [Member] |  |  |
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Number Outstanding at end of period (in shares) | 1,456,800 |  |
Weighted-Average Remaining Contractual Life (in years) | 8 years |  |
Weighted-Average Exercise Price (in dollars per share) | $ 79 |  |
Number Exercisable at end of period (in shares) | 547,500 |  |
Weighted-Average Exercise Price (in dollars per share) | $ 80 |  |
Exercise price of options lower range (in dollars per share) | 74 |  |
Exercise prices of options upper range (in dollars per share) | $ 87 |  |
Stock Option [Member] |  |  |
Remaining contractual term and weighted average exercise prices of stock options [Abstract] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value | $ 59 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 37 |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | 5 years 6 months 30 days |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees, due to retirement eligibility preceding the requisite vesting period. + References No definition available. + Details
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- Definition Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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