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SHARE BASED COMPENSATION - Exercise Price - (Details) shares in Thousands, Option in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 Option $ / shares shares | Dec. 31, 2019 Option $ / shares shares | Dec. 31, 2018 Option $ / shares
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 38,373 | 33,882 | 28,935
Weighted average remaining contractual life | 4 years |  |
Weighted Average Exercise Price | $ 39.65 | $ 39.70 | $ 38.25
Number of exercisable share option | Option | 26,943 | 21,535 |
Weighted Average Exercise Price Exercisable | $ 39.10 | $ 37.86 |
Shares available for future issuance | shares | 8,999 | 14,295 |
23.28-24.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 51 |  |
Weighted average remaining contractual life | 6 years |  |
Weighted Average Exercise Price | $ 23.28 |  |
30.00-34.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 5,130 |  |
Weighted average remaining contractual life | 2 years |  |
Weighted Average Exercise Price | $ 30.23 |  |
Number of exercisable share option | Option | 5,130 |  |
Weighted Average Exercise Price Exercisable | $ 30.23 |  |
35.00 to 39.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 12,484 |  |
Weighted average remaining contractual life | 3 years |  |
Weighted Average Exercise Price | $ 38.40 |  |
Number of exercisable share option | Option | 6,663 |  |
Weighted Average Exercise Price Exercisable | $ 37.82 |  |
40.00 to 44.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 20,527 |  |
Weighted average remaining contractual life | 4 years |  |
Weighted Average Exercise Price | $ 42.71 |  |
Number of exercisable share option | Option | 15,030 |  |
Weighted Average Exercise Price Exercisable | $ 42.60 |  |
45.00 to 49.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 53 |  |
Weighted average remaining contractual life | 5 years |  |
Weighted Average Exercise Price | $ 48.06 |  |
Number of exercisable share option | Option | 35 |  |
Weighted Average Exercise Price Exercisable | $ 48.07 |  |
50.00 to 54.27 |  |  |
SHARE BASED COMPENSATION |  |  |
Number of share options | Option | 128 |  |
Weighted average remaining contractual life | 5 years |  |
Weighted Average Exercise Price | $ 52.39 |  |
Number of exercisable share option | Option | 85 |  |
Weighted Average Exercise Price Exercisable | $ 52.39 |  |
Minimum | 23.28-24.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 23.28 |  |
Minimum | 30.00-34.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 30.00 |  |
Minimum | 35.00 to 39.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 35.00 |  |
Minimum | 40.00 to 44.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 40.00 |  |
Minimum | 45.00 to 49.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 45.00 |  |
Minimum | 50.00 to 54.27 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 50.00 |  |
Maximum | 23.28-24.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 24.99 |  |
Maximum | 30.00-34.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 34.99 |  |
Maximum | 35.00 to 39.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 39.99 |  |
Maximum | 40.00 to 44.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 44.99 |  |
Maximum | 45.00 to 49.99 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | 49.99 |  |
Maximum | 50.00 to 54.27 |  |  |
SHARE BASED COMPENSATION |  |  |
Exercise price (in dollars per share) | $ 54.27 |  |

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