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Preferred and Common Stock - Schedule of Options Fully Vested and/or Expected to Vest (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013
Schedule Of Stock Options [Line Items] |
Options Fully Vested and/or Expected to Vest, Number of options | 45.3
Options Fully Vested and/or Expected to Vest, Weighted average remaining contractual life, years | 4 years 11 months 9 days
Options Fully Vested and/or Expected to Vest, Weighted average exercise price | $ 10.78
Options Fully Vested and/or Expected to Vest, Intrinsic value | $ 55
$8.33 [Member] |
Schedule Of Stock Options [Line Items] |
Range of exercise price, lower unit | $ 8.33
Options Fully Vested and/or Expected to Vest, Number of options | 16.3
Options Fully Vested and/or Expected to Vest, Weighted average remaining contractual life, years | 1 year 22 days
Options Fully Vested and/or Expected to Vest, Weighted average exercise price | $ 8.33
Options Fully Vested and/or Expected to Vest, Intrinsic value | 38
$8.34 - $11.33 [Member] |
Schedule Of Stock Options [Line Items] |
Range of exercise price, lower unit | $ 8.34
Range of exercise price, upper unit | $ 11.33
Options Fully Vested and/or Expected to Vest, Number of options | 17.1
Options Fully Vested and/or Expected to Vest, Weighted average remaining contractual life, years | 8 years 2 months 19 days
Options Fully Vested and/or Expected to Vest, Weighted average exercise price | $ 9.60
Options Fully Vested and/or Expected to Vest, Intrinsic value | $ 17
$11.34 - $17.40 [Member] |
Schedule Of Stock Options [Line Items] |
Range of exercise price, lower unit | $ 11.34
Range of exercise price, upper unit | $ 17.40
Options Fully Vested and/or Expected to Vest, Number of options | 10.8
Options Fully Vested and/or Expected to Vest, Weighted average remaining contractual life, years | 6 years 1 month 21 days
Options Fully Vested and/or Expected to Vest, Weighted average exercise price | $ 14.46
$17.41 - $34.84 [Member] |
Schedule Of Stock Options [Line Items] |
Range of exercise price, lower unit | $ 17.41
Range of exercise price, upper unit | $ 34.84
Options Fully Vested and/or Expected to Vest, Number of options | 1.1
Options Fully Vested and/or Expected to Vest, Weighted average remaining contractual life, years | 18 days
Options Fully Vested and/or Expected to Vest, Weighted average exercise price | $ 28.92

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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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