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Stock-Based Compensation (Details) (USD $) | 3 Months Ended |  | 3 Months Ended |  |  |  |  | 3 Months Ended |  | 3 Months Ended |
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Mar. 31, 2013 Stock Options item | Mar. 31, 2013 Restricted Stock, Restricted Stock Units, Cash Settled Restricted Stock Units and Cash Settled Performance Awards item | Mar. 31, 2013 Cash settled restricted stock units and cash settled performance awards | Mar. 31, 2013 Restricted stock shares and stock settled restricted stock units | Mar. 31, 2013 Partnership Phantom Units | May 31, 2011 2007 Plan | Mar. 31, 2013 2007 Plan Stock Options | Mar. 31, 2013 2007 Plan Stock Appreciation Rights | Mar. 31, 2013 2007 Plan Restricted Stock | Mar. 31, 2013 2007 Plan Stock Settled Restricted Stock Units | Feb. 28, 2013 2013 Plan | Mar. 31, 2013 2013 Plan Stock Options | Mar. 31, 2013 2013 Plan Stock Appreciation Rights | Mar. 31, 2013 2013 Plan Stock-settled award other than an option, stock appreciation right or award for which the recipient pays intrinsic value | Mar. 31, 2013 Employee Stock Purchase Plan | May 31, 2011 Employee Stock Purchase Plan | Mar. 31, 2013 Employee Stock Purchase Plan Minimum | Mar. 31, 2013 Employee Stock Purchase Plan Maximum | Mar. 31, 2013 Partnership Long-Term Incentive Plan
Stock-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of shares available under the Plan |  |  |  |  |  | 12,500,000 |  |  |  |  | 6,500,000 |  |  |  |  | 1,000,000 |  |  | 1,035,378
Number of shares counted by each award |  |  |  |  |  |  | 1 | 1 | 2 | 2 |  | 1 | 1 | 1.75 |  |  |  |  |
Expiration period | 7 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of awards per anniversary or year (as a percent) | 33.33% | 33.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of anniversaries of grant date on which awards will vest | 3 | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average grant date fair value (in dollars per share) | $ 10.19 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average assumptions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected life | 4 years 6 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate (as a percent) | 0.66% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Volatility (as a percent) | 49.19% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend yield (as a percent) | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in shares) | 2,584,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) | 177,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercised (in shares) | (236,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancelled (in shares) | (3,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at the end of the period (in shares) | 2,522,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercisable at the end of the period (in shares) | 1,812,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Exercise Price |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in dollars per share) | $ 27.02 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in dollars per share) | $ 25.04 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercised (in dollars per share) | $ 16.72 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancelled (in dollars per share) | $ 46.92 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at end of period, (in dollars per share) | $ 27.82 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercisable at the end of period (in dollars per share) | $ 32.58 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Remaining Life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at the end of the period | 4 years 1 month 6 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercisable at the end of the period | 3 years 3 months 18 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate Intrinsic Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding at the end of the period (in dollars) | $ 17,623,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercisable at the end of the period (in dollars) | 9,573,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total intrinsic value of stock options exercised (in dollars) | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected unrecognized compensation cost related to unvested stock options (in dollars) | 3,800,000 | 36,700,000 |  |  | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average period over which the expected unrecognized compensation cost related to unvested stock options will be recognized | 2 years | 2 years 1 month 6 days |  |  | 2 years 4 months 24 days |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested awards at the beginning of the period (in shares) |  | 1,992,000 | 480,000 | 1,480,000 | 63,884,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  | 693,000 |  |  | 55,334,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested (in shares) |  | (720,000) |  |  | (18,135,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancelled (in shares) |  | (5,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested awards at the end of the period (in shares) |  | 1,960,000 | 480,000 | 1,480,000 | 101,083,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Grant-Date Fair Value Per Share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested awards at the beginning of the period (in dollars per share) |  | $ 16.12 |  |  | $ 23.62 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted (in dollars per share) |  | $ 25.06 |  |  | $ 23.76 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vested (in dollars per share) |  | $ 18.79 |  |  | $ 24.46 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancelled (in dollars per share) |  | $ 20.13 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested awards at the end of the period (in dollars per share) |  | $ 18.29 |  |  | $ 23.55 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum employee salary to purchase shares (in dollars) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000 |  |  |  |
Maximum percentage of employee eligible pay to purchase shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |
Purchase price as a percent of the fair market value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 85.00% | 100.00% |
Remaining shares available for purchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 288,318 |  |  |  |
Employee Stock Purchase plan discount from market price (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |

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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + 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 (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + 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 (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the 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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 65 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 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 The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c), d(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, 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 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the 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 (d)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(f) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + 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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph d(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Weighted average remaining contractual term for option awards 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 Purchase price of common stock expressed as a percentage of its fair market value. + References No definition available. + Details
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- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. + References No definition available. + Details
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