STOCK-BASED COMPENSATION - Fair Value of Employee Stock Options Granted as Determined by Black-Scholes Valuation Model Assumptions (Detail) - $ / shares |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2021 |
Dec. 31, 2020 |
|
| Nonqualified Stock Options | ||
| Stockholders Equity Note [Line Items] | ||
| Risk-free interest rate | 0.84% | 1.26% |
| Expected volatility | 23.15% | 19.25% |
| Weighted-average fair value of options granted (usd per share) | $ 23.71 | $ 11.74 |
| Expected life (in years) | 7 years 6 months | 7 years 6 months |
| Expected dividend yield | 3.31% | 3.51% |
| Long-Term Incentive Performance Award | ||
| Stockholders Equity Note [Line Items] | ||
| Risk-free interest rate | 0.19% | 0.15% |
| Expected volatility | 30.70% | 27.53% |
| Weighted-average fair value of options granted (usd per share) | $ 167.31 | $ 92.77 |
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Share Payout | 102.40% | 101.00% |
| X | ||||||||||
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Share Payout No definition available.
|
| X | ||||||||||
- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition 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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|