STOCK-BASED COMPENSATION PLANS (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options Weighted Average Exercise Price [Abstract]
Exercisable at December 31,	$ 92.19
2016 Plan [Member] \| Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Weighted average fair value per share of options granted during the year	$ 21.57	$ 23.63	$ 16.68
Expected annual dividend yield	2.65%	2.49%	2.81%
Expected volatility	18.40%	18.93%	18.96%
Risk-free rate of return	2.46%	2.71%	2.02%
Expected option term (years)	4 years 10 months 13 days	4 years 11 months 12 days	5 years 14 days
Stock Options Number of Options [Abstract]
Outstanding at beginning of period,	22,478,581	23,409,293	28,667,300
Spin related adjustment		989,158
Granted	3,136,058	3,303,722	5,098,569
Exercised	(5,897,060)	(3,399,375)	(8,840,019)
Lapsed or Canceled	(986,017)	(1,824,217)	(1,516,557)
Outstanding at end of period,	18,731,562	22,478,581	23,409,293
Vested and Expected to Vest at December 31,	17,636,444
Exercisable at December 31,	11,620,992	14,073,120	12,288,854
Options Activity Footnote [Abstract]
Vested options	11,600,000
Options expected to vest	6,000,000.0
Outstanding unvested options	7,100,000
Stock Options Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period,	$ 97.83	$ 94.16	$ 79.57
Granted	155.43	148.48	125.16
Exercised	84.31	78.29	62.34
Lapsed or Canceled	136.15	123.01	109.04
Outstanding at end of period,	109.87	97.83	94.16
Vested and Expected to Vest at December 31,	107.39
Exercisable at December 31,	$ 92.19	$ 83.42	$ 78.35
Income Statement Impact From Stock Options [Abstract]
Compensation expense	$ 47	$ 64	$ 79
Future income tax benefit recognized	10	13	17
2016 Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Income Statement Impact From Stock Options [Abstract]
Compensation expense	106	111	97
Future income tax benefit recognized	$ 21	$ 21	$ 19

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. 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.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for 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.

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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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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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