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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2014
Stock-Based Compensation [Abstract] |
Schedule Of Assumptions Used To Estimate Fair Value Of Stock Options |
|  |  |  |  |  | For the nine months ended
|  |  |  |  |  | September 30,
|  |  |  |  |  | 2014 |  |  | 2013
Risk free interest rate |  |  |  |  |  | 1.15% - 1.37% |  |  | 0.51% - 1.38%
Dividend yield |  |  |  |  |  | 0.0% |  |  | 0.0%
Expected volatility |  |  |  |  |  | 22.0% |  |  | 25.0% - 29.0%
Expected lives |  |  |  |  |  | 4.4 years |  |  | 3.9 - 4.8 years
Company's Activities With Respect To Its Stock Options |
|  |  |  |  |  |  | Weighted- |  |  |
|  |  |  | Weighted- |  | Average |  |  |
|  |  |  | Average |  | Remaining |  |  |
|  | Number |  | Exercise Price |  | Contractual |  | Aggregate
|  | of Shares |  | Per Share |  | Life (in years) |  | Intrinsic Value
Outstanding at December 31, 2013 |  | 2,979 |  | $ | 48.30 |  |  |  |  |
Granted |  | 1,121 |  | $ | 95.51 |  |  |  |  |
Exercised |  | (743) |  | $ | 36.20 |  |  |  |  |
Canceled |  | (29) |  | $ | 77.89 |  |  |  |  |
Outstanding at September 30, 2014 |  | 3,328 |  | $ | 66.64 |  | 4.9 |  | $ | 147,296
Exercisable at September 30, 2014 |  | 1,082 |  | $ | 41.08 |  | 3.2 |  | $ | 75,516
Unvested at September 30, 2014 |  | 2,246 |  | $ | 78.95 |  | 5.7 |  | $ | 71,780
Company's Restricted Stock Unit Activity |
|  |  |  |  |  |  |  |  | Weighted-
|  |  |  |  |  |  |  |  | Average
|  |  |  |  |  |  |  |  | Grant Date
|  |  |  |  |  |  | Number of |  | Fair Value per
|  |  |  |  |  |  | Units |  | Share
|  |  |  |  |  |  | (in thousands) |  |  |
Outstanding at December 31, 2013 |  |  |  |  |  |  | 305 |  | $ | 55.60
Granted |  |  |  |  |  |  | 118 |  | $ | 95.55
Vested |  |  |  |  |  |  | (121) |  | $ | 50.14
Forfeited/canceled |  |  |  |  |  |  | (3) |  | $ | 74.31
Outstanding at September 30, 2014 |  |  |  |  |  |  | 299 |  | $ | 73.42

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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