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Share-Based and Other Deferred Compensation - Additional information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended |  |  | 12 Months Ended |  | 12 Months Ended | 3 Months Ended | 12 Months Ended |  |  | 2 Months Ended
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Dec. 31, 2013 | Jun. 30, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 Employee | Sep. 30, 2013 Long Term Incentive Plan [Member] | Dec. 31, 2013 Long Term Incentive Plan [Member] | Dec. 31, 2013 Employee Loans [Member] | Dec. 31, 2013 2006 Stock Incentive Plan [Member] | Dec. 31, 2012 2006 Stock Incentive Plan [Member] | Dec. 31, 2011 IPO Event-Based Awards [Member] | Dec. 31, 2013 IPO Event-Based Awards [Member] | Dec. 31, 2013 Equity Grants [Member] | Dec. 31, 2012 Equity Grants [Member] | Dec. 31, 2011 Equity Grants [Member] | Dec. 31, 2013 Equity Grants [Member] Minimum [Member] | Dec. 31, 2012 Equity Grants [Member] Minimum [Member] | Dec. 31, 2011 Equity Grants [Member] Minimum [Member] | Dec. 31, 2013 Equity Grants [Member] Maximum [Member] | Dec. 31, 2012 Equity Grants [Member] Maximum [Member] | Dec. 31, 2011 Equity Grants [Member] Maximum [Member] | Dec. 31, 2012 Equity Grants [Member] Restricted Stock Units (RSUs) [Member] | Dec. 31, 2011 Equity Grants [Member] Restricted Stock Units (RSUs) [Member] | Dec. 31, 2013 Class A [Member] 2006 Stock Incentive Plan [Member] | Dec. 31, 2013 Class A [Member] IPO Event-Based Awards [Member] Restricted Stock Units (RSUs) [Member] | Dec. 31, 2013 Restricted Stock Units (RSUs) [Member] Equity Grants [Member] | Dec. 31, 2013 LP Units [Member] | Dec. 31, 2012 LP Units [Member] | Dec. 31, 2011 LP Units [Member] | Dec. 31, 2013 Acquisition-Related [Member] | Dec. 31, 2012 Acquisition-Related [Member] | Dec. 31, 2011 Acquisition-Related [Member] | Dec. 31, 2013 Acquisition-Related [Member] Unvested Acquisition-Related Equity Awards [Member] | Dec. 31, 2013 Acquisition-Related [Member] Unvested Acquisition-Related Equity Awards [Member] Lexicon Deferred Compensation [Member] | Dec. 31, 2012 Acquisition-Related [Member] Unvested Acquisition-Related Equity Awards [Member] Lexicon Deferred Compensation [Member] | Dec. 31, 2011 Acquisition-Related [Member] Unvested Acquisition-Related Equity Awards [Member] Lexicon Deferred Compensation [Member] | Dec. 31, 2011 Acquisition-Related [Member] Class A [Member] | Dec. 31, 2013 2012 Equity Grants [Member] Service-Based Awards [Member] | Mar. 31, 2012 Deferred Cash Program [Member] | Mar. 31, 2011 Deferred Cash Program [Member] | Dec. 31, 2013 Deferred Cash Program [Member] | Dec. 31, 2012 Deferred Cash Program [Member] | Dec. 31, 2011 Deferred Cash Program [Member] | Feb. 26, 2014 Other Share Based Awards [Member] Subsequent Event [Member] | Feb. 26, 2014 Other Deferred Cash [Member] Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Grant of Vested LP units (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 13,548,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Grant of Unvested LP units (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,589,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LP units convertible conversion ratio |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of LP Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,063 | $ 20,971 | $ 22,189 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,883,000 |  |  |  |  |  |  |  |
Total compensation expense not yet recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,561 |  |  |  |  | 113,469 |  |  | 4,706 |  |  |  |
Weighted-average period over which the compensation cost is expected to be recognized (in months) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 18 months |  |  |  |  | 20 months |  |  | 16 months |  |  |  |
Compensation expense related to acquisition related awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,960 | 18,749 | 6,621 |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense related to deferred cash consideration |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,937 | 7,216 | 2,455 |  |  |  |  |  |  |  |  |  |  |  |  |
Grant of acquisition related deferred compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,892 |  |  |  |  |  |  |  |  |  |  |
Deferred compensation, vesting period (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |
Expense related to acquisition related deferred compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 211 | 875 | 413 |  |  |  |  |  |  |  |  |
Stock authorized under plan (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional shares authorized (in shares) |  | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares available to be granted in future (in shares) |  |  |  |  |  |  |  |  | 7,323,000 | 4,667,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RSU's fully vested but not delivered (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 525,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original grant of event based awards (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,286,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RSUs convertible into Class A common Stock ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unvested awards (in shares) |  |  |  |  |  |  |  |  |  |  |  | 12,000 | 6,680,000 | 7,972,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of Event-based Awards |  |  |  |  |  |  |  |  |  |  | 11,467 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards forfeited (in shares) |  |  |  |  |  |  |  |  |  |  | 27,000 |  | 60,000 |  |  |  |  |  |  |  |  | 256,000 | 76,000 |  |  | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred cash awards granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,926 | 9,153 |  |  |  |  | 5,935
Deferred compensation, vesting period (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |
Compensation expense related to deferred compensation program |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,804 | 4,210 | 1,938 |  |
Shares issued during period (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 2,398,000 |  |  |  |  |  |  |  |  | 3,163,000 | 2,273,000 |  |  | 2,398,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,767,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 26.60 | $ 22.62 | $ 21.93 | $ 55.24 | $ 29.19 | $ 36.41 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested units (in shares) |  |  |  |  |  |  |  |  |  |  | 546,000 |  | 3,630,000 |  |  |  |  |  |  |  |  | 1,760,000 | 1,552,000 |  |  | 2,188,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense related to Service-based Award |  |  |  |  |  |  |  |  |  |  |  |  |  | 62,840 | 47,299 |  |  |  |  |  |  |  |  |  |  | 79,678 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Modification of Unvested Award (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 97,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Modification of Vested Award (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based awards reclassified from additional paid-in-capital to other current liabilities |  |  |  |  | 2,828 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income tax benefit related to share-based compensation arrangements |  |  | 29,497 | 26,773 | 19,423 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards, vesting period (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 years |
Requisite service period (in years) |  |  |  |  |  |  |  | one |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum contractual term (in years) |  |  |  |  |  |  |  | five |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement Compensation expense |  |  |  |  |  |  | 1,584 | 7,433 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred Compensation Arrangement Recorded liability |  |  |  |  |  |  |  | 13,378 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LP Units, Transfer Restrictions Released (in shares) | 1,267,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted Class A shares, transfer restrictions released (in shares) | 610,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Separation expense to certain employees |  |  | 4,834 | 7,273 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash distribution for separation benefit |  |  | 3,314 | 5,135 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of employees with modified equity based compensation awards |  |  |  |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incremental Compensation Expense From Modifications |  |  |  |  | $ 4,261 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long Term Incentive Plan Performance Period |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long Term Incentive Plan Payment Period |  |  |  |  |  | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Number of shares of equity interests issued or issuable to acquire entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(4) -URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479 + Details
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- Definition The compensation expense recognized during the period pertaining to the deferred compensation arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The maximum term of the deferred compensation arrangement. + 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition The minimum period that the individual is required to perform services in order to be fully vested under the deferred compensation arrangement. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, 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 (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. + 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 (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of additional shares authorized for issuance under an established share-based compensation plan. + References No definition available. + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(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 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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