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Earnings Per Share | 12 Months Ended
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Dec. 31, 2012
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings per Share Basic earnings per common share (“EPS”) is computed by dividing net income attributable to the common shareholders of the Company by the weighted-average number of common shares outstanding. Diluted EPS is computed in the same manner as basic EPS, except the number of shares is increased to include additional common shares that would have been outstanding if potential common shares with a dilutive effect had been issued. Potential common shares consist primarily of stock options, restricted stock and restricted stock units calculated using the treasury stock method. The calculation for basic and diluted EPS is as follows:
(in millions, except per share data) | Years ended December 31,
| 2012 |  | 2011 |  | 2010
Amount attributable to The McGraw-Hill Companies, Inc. common shareholders: |  |  |  |  |
Income from continuing operations | $ | 676 |  |  | $ | 607 |  |  | $ | 581 |
(Loss) income from discontinued operations | (239 | ) |  | 304 |  |  | 247 |
Net income attributable to the Company | $ | 437 |  |  | $ | 911 |  |  | $ | 828 |
Basic weighted-average number of common shares outstanding | 278.6 |  |  | 298.1 |  |  | 309.4 |
Effect of stock options and other dilutive securities | 6.0 |  |  | 5.5 |  |  | 2.8 |
Diluted weighted-average number of common shares outstanding | 284.6 |  |  | 303.6 |  |  | 312.2 |
Basic EPS: |  |  |  |  |
Income from continuing operations | $ | 2.43 |  |  | $ | 2.03 |  |  | $ | 1.88 |
(Loss) income from discontinued operations | (0.86 | ) |  | 1.02 |  |  | 0.80 |
Net income | $ | 1.57 |  |  | $ | 3.05 |  |  | $ | 2.68 |
Diluted EPS: |  |  |  |  |
Income from continuing operations | $ | 2.37 |  |  | $ | 2.00 |  |  | $ | 1.86 |
(Loss) income from discontinued operations | (0.84 | ) |  | 1.00 |  |  | 0.79 |
Net income | $ | 1.53 |  |  | $ | 3.00 |  |  | $ | 2.65 |
There were 1.4 million, 1.6 million and 1.4 million restricted performance shares outstanding as of December 31, 2012, 2011 and 2010, respectively, that were not included in the computation of diluted earnings per common share because the necessary vesting conditions have not yet been met. The effect of the potential exercise of stock options is excluded from the computation of diluted earnings per share when the average market price of the common stock is lower than the exercise price of the related option during the period because the effect would have been antidilutive. For the years ended December 31, 2012, 2011 and 2010, the number of stock options excluded from the computation was 3.4 million, 10.1 million and 23.2 million, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1252-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=16381557&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1278-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -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 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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