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STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 01, 2020 | Feb. 12, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019 | May 13, 2020 | Mar. 23, 2020 | Feb. 06, 2020
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  | $ 137 |  | $ 205 | $ 368 | $ 513 |  |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount |  |  | $ 2,100 |  |  | $ 2,100 |  |  |  |  |
Management Incentive Award |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 5 years |  |  |  |  |
Closing New York Stock Exchange price |  | $ 105.54 |  |  |  |  |  |  |  | $ 91.90 | $ 106.51
Long-Term Incentive Performance Award |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years |  |  |  |  |
Closing New York Stock Exchange price | $ 99.08 |  |  |  |  |  |  |  |  |  |
Weighted-average fair value of options granted (usd per share) |  |  |  |  |  | $ 92.25 |  | $ 123.44 |  |  |
Long-Term Incentive Performance Award | Restricted Units |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Closing New York Stock Exchange price |  |  |  |  |  |  |  |  | $ 91.65 |  |
Nonqualified Stock Options |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 5 years |  |  |  |  |
Percentage of the award vesting at each anniversary date of the grant |  |  |  |  |  | 20.00% |  |  |  |  |
Expiration period (in years) |  |  |  |  |  | 10 years |  |  |  |  |
Stock options granted |  |  | 0.1 | 300,000 |  |  |  |  |  |  |
Weighted-average fair value of options granted (usd per share) | $ 99.28 | $ 105.54 |  |  |  |  |  |  |  |  |

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