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Stock-Based Compensation | 12 Months Ended
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Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation | Stock-Based Compensation We issue stock-based incentive awards to our eligible employees and Directors under two employee stock ownership plans (the 1993 and 2002 Employee Stock Incentive Plans) and a Director Deferred Stock Ownership Plan.
• | 1993 Employee Stock Incentive Plan – This plan provided for the granting of incentive stock options, nonqualified stock options, stock appreciation rights (“SARs”), restricted stock awards, or other stock-based awards. No further awards may be granted under this plan; although awards granted prior to the adoption of the 2002 Plan, as amended, remain outstanding under this plan in accordance with their terms. The remaining options under this plan will expire in the first quarter of 2013.
• | 2002 Employee Stock Incentive Plan (the “2002 Plan”) – The 2002 Plan permits the granting of nonqualified stock options, SARs, performance stock, restricted stock and other stock-based awards.
• | Director Deferred Stock Ownership Plan – Under this plan, common stock reserved may be credited to deferred stock accounts for eligible Directors. In general, the plan requires that 50% of eligible Directors’ annual compensation plus dividend equivalents be credited to deferred stock accounts. Each Director may also elect to defer all or a portion of the remaining compensation and have an equivalent number of shares credited to the deferred stock account. Recipients under this plan are not required to provide consideration to us other than rendering service. Shares will be delivered as of the date a recipient ceases to be a member of the Board of Directors or within five years thereafter, if so elected. The plan will remain in effect until terminated by the Board of Directors or until no shares of stock remain available under the plan.
The number of common shares reserved for issuance are as follows:
(in millions) | December 31,
| 2012 |  | 2011
Shares available for granting under the 2002 Plan | 26.8 |  | 19.2
Options outstanding | 18.6 |  | 27.0
Total shares reserved for issuance 1 | 45.4 |  | 46.2
1 | Shares reserved for issuance under the Director Deferred Stock Ownership Plan are included in the total, but are less than 0.2 million.
We issue treasury shares upon exercise of stock options and the issuance of restricted stock and unit awards. To offset the dilutive effect of the exercise of employee stock options, we periodically repurchase shares, see Note 9 – Equity for further discussion. Also impacting the common shares reserved for issuance was the special dividend announced in the fourth quarter of 2012. In conjunction with the special dividend, the Compensation and Leadership Development Committee of the Board of Directors decided that employees who hold stock options, performance share units and restricted unit awards under the employee stock ownership plans should receive the economic benefit of the special dividend. Therefore, employees' equity awards have been adjusted to maintain the value of the award prior to the special dividend. Stock-based compensation expense and the corresponding tax benefit are as follows:
(in millions) | Years ended December 31,
| 2012 |  | 2011 |  | 2010
Stock option expense | $ | 10 |  |  | $ | 19 |  |  | $ | 18 |
Restricted stock and unit awards expense | 83 |  |  | 58 |  |  | 33 |
Total stock-based compensation expense | $ | 93 |  |  | $ | 77 |  |  | $ | 51 |
Tax benefit | 36 |  |  | 29 |  |  | 20 |
Included in total stock-based compensation expense are amounts related to employees at the Company's corporate offices who transferred to MHE of $5 million, $4 million and $2 million for the years ended December 31, 2012, 2011 and 2010. Additionally, stock-based compensation of $16 million, $19 million and $14 million is recorded in discontinued operations for the years ended December 31, 2012, 2011 and 2010, respectively, as as result of the definitive agreement to sell MHE described further in Note 2 – Growth and Value Plan & Discontinued Operations. Stock Options Stock options, which may not be granted at a price less than the fair market value of our common stock on the date of grant, vest over a two years service period in equal annual installments and have a maximum term of 10 years. Therefore, stock option compensation costs are recognized from the date of grant, utilizing a two-year graded vesting method. Under this method, fifty percent of the costs are ratably recognized over the first twelve months with the remaining costs ratably recognized over a twenty-four month period starting from the date of grant. We use a lattice-based option-pricing model to estimate the fair value of options granted. The following assumptions were used in valuing the options granted (in 2012, stock options were not granted as part of employees' total stock-based incentive awards):
|  |  | Years ended December 31,
|  |  | 2011 |  | 2010
Risk-free average interest rate |  |  | 0.2-3.5% |  |  | 0.3-4.2% |
Dividend yield |  |  | 2.5-3.0% |  |  | 2.9-3.1% |
Volatility |  |  | 21-51% |  |  | 28-60% |
Expected life (years) |  |  | 6.1-6.2 |  |  | 5.8-7.0 |
Weighted-average grant-date fair value per option |  |  | $ | 10.61 |  |  | $ | 10.02 |
Because lattice-based option-pricing models incorporate ranges of assumptions, those ranges are disclosed. These assumptions are based on multiple factors, including historical exercise patterns, post-vesting termination rates, expected future exercise patterns and the expected volatility of our stock price. The risk-free interest rate is the imputed forward rate based on the U.S. Treasury yield at the date of grant. We use the historical volatility of our stock price over the expected term of the options to estimate the expected volatility. The expected term of options granted is derived from the output of the lattice model and represents the period of time that options granted are expected to be outstanding. Stock option activity is as follows:
(in millions, except per award amounts) | Shares |  | Weighted average exercise price |  | Weighted-average remaining years of contractual term |  | Aggregate intrinsic value
Options outstanding as of December 31, 2011 | 27.0 |  |  | $ | 39.96 |  |  |  |  |
Granted 1 | 0.7 |  | 1 |  | — |  |  |  |  |
Exercised | (8.4 | ) |  | $ | 35.61 |  |  |  |  |
Canceled, forfeited and expired | (0.7 | ) |  | $ | 52.85 |  |  |  |  |
Options outstanding as of December 31, 2012 | 18.6 |  |  | $ | 39.58 |  |  | 4.1 |  | $ | 288 |
Options exercisable as of December 31, 2012 | 17.5 |  |  | $ | 39.71 |  |  | 3.8 |  | $ | 270 |
1 | These shares relate to the adjustment in connection with the special dividend announced in the fourth quarter of 2012 and, as such, a weighted average exercise price was not calculated.
(in millions, except per award amounts) | Shares |  | Weighted-average grant-date fair value
Nonvested options outstanding as of December 31, 2011 | 3.6 |  |  | $ | 10.41 |
Vested 1 | (2.4 | ) |  | $ | 10.34 |
Forfeited | (0.1 | ) |  | $ | 10.41 |
Nonvested options outstanding as of December 31, 2012 | 1.1 |  |  | $ | 10.61 |
Total unrecognized compensation expense related to nonvested options | $ | 1 |  |  |
Weighted-average years to be recognized over | 0.3 |  |  |
1 | The majority of the share adjustment that was recorded in connection with the special dividend announced in the fourth quarter of 2012 related to options that have previously vested, therefore, the shares granted were offset by the equivalent vested amount.
The total fair value of our stock options that vested during the years ended December 31, 2012, 2011 and 2010 was $21 million, $18 million and $20 million, respectively. We receive a tax deduction for certain stock option exercises during the period in which the options are exercised, generally for the excess of the quoted market value of the stock at the time of the exercise of the options over the exercise price of the options (“intrinsic value”). For the years ended December 31, 2012, 2011 and 2010, $42 million, $20 million and $2 million, respectively, of excess tax benefits from stock options exercised are reported in our cash flows used for financing activities. Information regarding our stock option exercises is as follows:
(in millions) | Years ended December 31,
| 2012 |  | 2011 |  | 2010
Net cash proceeds from the exercise of stock options | $ | 299 |  |  | $ | 139 |  |  | $ | 50 |
Total intrinsic value of stock option exercises | $ | 120 |  |  | $ | 41 |  |  | $ | 16 |
Income tax benefit realized from stock option exercises | $ | 47 |  |  | $ | 16 |  |  | $ | 6 |
Restricted Stock and Unit Awards Restricted stock and unit awards (performance and non-performance) have been granted under the 2002 Plan. Restricted stock and unit performance awards will vest only if we achieve certain financial goals over the performance period. Restricted stock non-performance awards have various vesting periods (generally three years), with vesting beginning on the first anniversary of the awards. Recipients of restricted stock and unit awards are not required to provide consideration to us other than rendering service. The stock-based compensation expense for restricted stock and unit awards is determined based on the market price of our stock at the grant date of the award applied to the total number of awards that are anticipated to fully vest. For restricted stock and unit performance awards, adjustments are made to expense dependent upon financial goals achieved. Restricted stock and unit activity for performance and non-performance awards is as follows:
(in millions, except per award amounts) | Shares |  | Weighted-average grant-date fair value
Nonvested shares as of December 31, 2011 | 4.4 |  |  | $ | 36.78 |
Granted 1 | 1.7 |  |  | $ | 44.38 |
Vested | (2.5 | ) |  | $ | 35.24 |
Forfeited | (0.2 | ) |  | $ | 37.54 |
Nonvested shares as of December 31, 2012 | 3.4 |  |  | $ | 40.49 |
Total unrecognized compensation expense related to nonvested options | $ | 115 |  |  |
Weighted-average years to be recognized over | 1.7 |  |  |
1 | There are 0.2 million shares within the total amount granted during the year that relate to the adjustment in connection with the special dividend announced in the fourth quarter of 2012.
| Years ended December 31,
| 2012 |  | 2011 |  | 2010
Weighted-average grant-date fair value per award | $ | 44.38 |  |  | $ | 37.80 |  |  | $ | 33.72 |
Total fair value of restricted stock and unit awards vested | $ | 90 |  |  | $ | 1 |  |  | $ | 1 |
Tax benefit relating to restricted stock activity | $ | 32 |  |  | $ | 22 |  |  | $ | 13 |

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 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 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, 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. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 + Details
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