v2.4.0.6

Stock-Based Compensation Plans (Details) (USD $) | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 2009 Plan | May 21, 2009 2009 Plan | Dec. 31, 2012 2009 Plan Stock Options | Dec. 31, 2011 2009 Plan Stock Options | Dec. 31, 2010 2009 Plan Stock Options | Dec. 31, 2012 1994 Plan | Dec. 31, 2012 1994 Plan Stock Options | Dec. 31, 2011 1994 Plan Stock Options | Dec. 31, 2010 1994 Plan Stock Options
Stock-Based Compensation Plans |  |  |  |  |  |  |  |  |  |  |  |
Common stock authorized for issuance under incentive plan |  |  |  | 4,199,822 |  |  |  |  | 1,269,822 |  |  |
Common stock shares available for grant |  |  |  |  | 1,269,822 |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |  | $ 0.01 |  |  |  |  |  |  |  |
Common stock authorized under the new plan for issuance under incentive plan |  |  |  | 2,930,000 |  |  |  |  |  |  |  |
Shares |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in shares) |  |  |  |  |  | 247,403 | 126,484 |  |  | 1,112,959 | 2,072,217 | 2,836,254
Exercised (in shares) | (407,784) |  |  |  |  | (43,265) | (23,908) |  |  | (364,519) | (930,391) | (729,381)
Granted (in shares) | 115,303 | 144,827 | 126,484 |  |  | 115,303 | 144,827 | 126,484 |  |  |  |
Forfeited (in shares) |  |  |  |  |  | (11,887) |  |  |  | (28,610) | (28,867) | (34,656)
Options outstanding at the end of the period (in shares) |  |  |  |  |  | 307,554 | 247,403 | 126,484 |  | 719,830 | 1,112,959 | 2,072,217
Options exercisable at the end of the period (in shares) |  |  |  |  |  | 74,618 | 30,771 | 3,417 |  | 719,830 | 1,012,304 | 1,730,978
Weighted average exercise price per share |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding at the beginning of the period (in dollars per share) |  |  |  |  |  | $ 98.42 | $ 74.20 |  |  | $ 94.10 | $ 88.50 | $ 80.76
Exercised (in dollars per share) |  |  |  |  |  | $ 85.09 | $ 75.75 |  |  | $ 68.21 | $ 82.43 | $ 57.87
Granted (in dollars per share) |  |  |  |  |  | $ 133.16 | $ 115.83 | $ 74.20 |  |  |  |
Forfeited (in dollars per share) |  |  |  |  |  | $ 115.15 |  |  |  | $ 139.58 | $ 68.29 | $ 100.02
Options outstanding at the end of the period (in dollars per share) |  |  |  |  |  | $ 112.67 | $ 98.42 | $ 74.20 |  | $ 105.40 | $ 94.10 | $ 88.50
Options exercisable at the end of the period (in dollars per share) |  |  |  |  |  | $ 97.46 | $ 81.54 | $ 74.20 |  | $ 105.40 | $ 98.62 | $ 93.60

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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 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 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 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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