| **CREDIT ARRANGEMENTS (Details)**                                                                    |                   |                 | 12 Months Ended |              |
|------------------------------------------------------------------------------------------------------|-------------------|-----------------|-----------------|--------------|
||
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Short term borrowings under commercial paper                                                         |              |            | $ 75,000,000    | $ 75,000,000 |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018                        |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Value of senior unsecured revolving credit arrangement                                               | $ 1,000,000,000   |            |            |         |
| Term of senior unsecured revolving credit agreement                                                  | 5 years           |            |            |         |
| Sub-limit for swingline loans                                                                        | $ 70,000,000      |            |            |         |
| Sub-limit for letters of credit                                                                      | 175,000,000       |            |            |         |
| Foreign currency sub-limit                                                                           | 200,000,000       |            |            |         |
| Provision for maximum amount of commitments                                                          | 500,000,000       |            |            |         |
| Provision for maximum amount of credit extensions                                                    | $ 1,500,000,000.0 |            |            |         |
| Unused commitment fee percentage                                                                     | 0.20%             |            |            |         |
| Payment failures on other debt which can trigger an event of default                                 | $ 100,000,000     |            |            |         |
| Amount of unsatisfied final judgment or orders considered an event of default                        | 100,000,000       |            |            |         |
| Amount of certain ERISA liability incurrence considered an event of default                          | $ 100,000,000     |            |            |         |
| Period to request extension of maturity date in event of default                                     | 45 days           |            |            |         |
| Maturity date extension period in event of default                                                   | 1 year            |            |            |         |
| Number of extension periods per calendar year in event of default | extension                        | 1                 |            |            |         |
| Number of extension periods in event of default | extension                                          | 2                 |            |            |         |
| Borrowings outstanding                                                                               |              |            | 0               |         |
| Short term borrowings under commercial paper                                                         |              |            | 75,000,000      |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | Maximum              |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Unused commitment fee percentage                                                                     | 0.30%             |            |            |         |
| Maximum allowable percentage of consolidated total indebtedness to total capital                     | 0.65              |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | Minimum              |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Unused commitment fee percentage                                                                     | 0.125%            |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | LIBOR                |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Rate divisor percentage                                                                              | 1.00%             |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | Eurodollar           |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Interest rate margin                                                                                 | 1.50%             |            |            |         |
| Interest rate margin, base rate                                                                      | 1.00%             |            |            |         |
| Interest rate margin, initial rate                                                                   | 0.50%             |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | Eurodollar | Maximum |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Interest rate margin                                                                                 | 2.00%             |            |            |         |
| Interest rate margin, initial rate                                                                   | 1.00%             |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | Eurodollar | Minimum |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Interest rate margin                                                                                 | 1.125%            |            |            |         |
| Interest rate margin, initial rate                                                                   | 0.125%            |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2018 Credit Facility 2018 | NYFRB                |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Interest rate margin, base rate                                                                      | 0.50%             |            |            |         |
| Senior Unsecured Debt | Revolving Credit Facility | 2015 Credit Facility 2015                        |              |            |            |         |
| **Line of Credit Facility [Line Items]**                                                             |              |            |            |         |
| Value of senior unsecured revolving credit arrangement                                               |              | $ 1,000,000,000 |            |         |
| Term of senior unsecured revolving credit agreement                                                  |              | 5 years         |            |         |
| Unamortized debt issuance costs recognized as loss on extinguishment of debt                         |              |            | $ 1,000,000     |         |

| X                                                                                                                                                                                                                                                                                       |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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Debt Instrument, Basis Spread on Variable Rate, Base Rate
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No definition available.
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Debt Instrument, Basis Spread on Variable Rate, Initial Rate
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No definition available.
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Debt Instrument, Basis Spread on Variable Rate, Rate Divisor Percentage
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No definition available.
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| X                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument, Debt Default, Maturity Date Extension Period
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No definition available.
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| X                                                                                                                                                                                                                                                                                           |
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Debt Instrument, Debt Default, Number of Extension Periods
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No definition available.
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| X                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument, Debt Default, Number of Extension Periods Per Calendar Year
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Debt Instrument, Debt Default, Period to Request Extension of Maturity Date
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No definition available.
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| X                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit, Covenant, Maximum Amount of ERISA Liability
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit, Covenant, Maximum of Unsatisfied Final Judgments From Certain Subsidiaries
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit, Covenant Terms, Maximum Amount of Other Indebtedness From Certain Subsidiaries
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                              |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit Facility, Maximum Borrowing Capacity, Amount of Commitments
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit Facility, Maximum Borrowing Capacity, Amount of Credit Extensions
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit Facility, Maximum Borrowing Capacity, Sub-limit For Foreign Currency
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit Facility, Maximum Borrowing Capacity, Sub-limit For Letters Of Credit
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Line of Credit Facility, Maximum Borrowing Capacity, Sub-limit For Swing Line Loans
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.
+ References
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| X                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Percentage points added to the reference rate to compute the variable rate on the debt instrument.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
+ References
No definition available.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
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.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                      |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Indebtedness divided by net capital.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.
+ References
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| X                                                                                                                                                |
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| X                                                                                                                                                        |
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