SHARE-BASED COMPENSATION PLANS (Details) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($) $ / shares shares	Mar. 31, 2018 award $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options, contractual term	10 years
Grants in period for accounting purposes (in shares)	79	98
Compensation cost not yet recognized \| $	$ 53
Compensation cost not yet recognized, period for recognition	2 years 1 month 6 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential performance award percentage	200.00%
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted (in shares)	182	347
Award vesting period	3 years
Weighted average fair value per option granted (in usd per share) \| $ / shares	$ 11.74	$ 15.89
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Grants in period (in shares)		95
Number of performance periods for which performance based stock will be measured for vesting purposes \| award		3
Weighted average fair value, non-equity options granted in period (in usd per share) \| $ / shares	$ 57.92	$ 74.72
Performance Based Restricted Stock \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential performance award percentage		150.00%
ROC/COC Performance Based Restricted Stock Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	75	51
Weighted average fair value, non-equity options granted in period (in usd per share) \| $ / shares	$ 61.22	$ 72.93
ROC/COC Performance Based Restricted Stock Rights \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Potential performance award percentage	200.00%
SRG, Performance Based Restricted Stock Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	75	51
Weighted average fair value, non-equity options granted in period (in usd per share) \| $ / shares	$ 61.22	$ 72.93
Time Vested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years	3 years
Grants in period (in shares)	298	132
Weighted average fair value, non-equity options granted in period (in usd per share) \| $ / shares	$ 57.92	$ 76.69
Vested awards (in shares)		104

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Performance-based restricted stock awards granted

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Share Based Compensation Arrangement, By Share Based Payment Award, Potential Performance Award, Percentage

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Net number of share options (or share units) granted during the period.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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