Outstanding Performance Share Units Awarded (Detail) - Performance share units	9 Months Ended
Sep. 30, 2015 shares
Year of Award 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Years of Award	2013
Number of Units	158,000
Description of Performance Metric	Brigatinib clinical trial enrollment (100%) - achieved in 2015
Year of Award 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Years of Award	2014
Number of Units	1,044,000
Description of Performance Metric	Iclusig clinical trial enrollment (50%); cumulative revenues from sales of Iclusig in 2014 and 2015 (50%)
Year of Award 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Years of Award	2015
Number of Units	731,300
Description of Performance Metric	Iclusig clinical trial enrollment (315,000 units); 2015 revenues from sales of Iclusig (315,000 units); total relative return on common stock 2015-2017 (101,300 units)

Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments Other Than Options, Year of Accrual

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ 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)(2)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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- Definition

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+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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