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Employee Share Plan - Stock Award Activity (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013
Stock Option Activity [Abstract] |
Outstanding Beginning balance, Number of Options | 7,541
Granted, Number of Options | 1,497
Exercised or released, Number of Options | (1,846)
Expired or canceled, Number of Options | (1,157)
Outstanding Ending balance, Number of Options | 6,035
Exercisable Ending balance, Number of Options | 2,695
Outstanding beginning balance, Weighted Average Exercise Price Per Share | $ 7.18
Granted, Weighted Average Exercise Price Per Share | $ 6.52
Exercised or released, Weighted Average Exercise Price Per Share | $ 7.57
Expired or canceled, Weighted Average Exercise Price Per Share | $ 7.28
Outstanding Ending balance, Weighted Average Exercise Price Per Share | $ 6.88
Exercisable Ending balance, Weighted Average Exercise Price | $ 7.33
Weighted Average Remaining Contractual Term , Outstanding | 3 years 4 months 2 days
Weighted Average Remaining Contractual Term , Vested and Exercisable at Dec 31, 2013 | 2 years 22 days
Aggregate Intrinsic value, Outstanding Ending Balance | $ 13.5
Aggregate Intrinsic value, Vested and exercisable at Dec 31, 2013 | $ 4.8

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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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