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v3.3.1.900

Summary of Option Activities (Detail) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Outstanding Option, Number of shares, beginning balance | 7,897,451 | 7,620,958 | 7,436,238
Granted, Number of Shares | 3,039,350 | 2,845,500 | 2,889,750
Exercised, Number of Shares | (2,256,454) | (2,277,469) | (2,288,666)
Cancelled, Number of Shares | (280,164) | (291,538) | (416,364)
Outstanding Option, Number of shares, ending balance | 8,400,183 | 7,897,451 | 7,620,958
Outstanding options vested and exercisable, Number of Shares | 1,671,216 |  |
Outstanding Option, Average Option Price, beginning balance | $ 57.29 | $ 43.63 | $ 36.31
Granted, Average Option Price | 117.70 | 78.65 | 53.51
Exercised, Average Option Price | 48.97 | 38.50 | 32.27
Cancelled, Average Option Price | 83.63 | 55.63 | 43.93
Outstanding Option, Average Option Price, ending balance | 80.50 | 57.29 | 43.63
Outstanding options vested and exercisable, Average option price | 52.19 |  |
54.79 -$16.22 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  |  | 54.79
Range, Low |  |  | 16.22
79.79 -$53.38 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  |  | 79.79
Range, Low |  |  | 53.38
53.38 -$16.22 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  |  | 53.38
Range, Low |  |  | $ 16.22
79.79-$30.32 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  | 79.79 |
Range, Low |  | 30.32 |
102.21-$78.17 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  | 102.21 |
Range, Low |  | 78.17 |
73.65-$30.32 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  | 73.65 |
Range, Low |  | 30.32 |
78.17-$36.95 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High |  | 78.17 |
Range, Low |  | $ 36.95 |
102.21-$36.95 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High | 102.21 |  |
Range, Low | 36.95 |  |
$142.43-$108.29 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High | 142.43 |  |
Range, Low | 108.29 |  |
$134.70-$36.95 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High | 134.70 |  |
Range, Low | 36.95 |  |
$142.43-$36.95 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Range, High | 142.43 |  |
Range, Low | $ 36.95 |  |

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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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