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EARNINGS (LOSS) PER SHARE - Shares Excluded from Calculation of Earnings per Share (Detail) (USD $)
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3 Months Ended | |
|---|---|---|
|
Mar. 31, 2015
|
Mar. 31, 2014
|
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Antidilutive options | 345,161 | 579,029 |
| Average price of options to purchase (in dollars per share) | $ 40.29 | $ 34.57 |
| 3.0% Convertible Senior Notes Due 2015 | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Antidilutive options | 3,185,213 | 3,185,213 |
| 1.625% Convertible Senior Notes Due 2019 | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||
| Antidilutive options | 9,885,561 | 9,885,561 |