v2.4.0.6

Quarterly Financial Data (Unaudited) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Consolidated Statements of Income |  |  |  |  |  |  |  |  |  |  |
Commissions, fees and other | $ 2,980 | $ 2,708 | $ 2,799 | $ 2,748 | $ 2,897 | $ 1,786 | $ 1,883 | $ 1,891 | $ 11,235 | $ 8,457 | $ 7,521
Fiduciary investment income | 14 | 15 | 12 | 11 | 12 | 15 | 15 | 13 | 52 | 55 | 74
Total revenue | 2,994 | 2,723 | 2,811 | 2,759 | 2,909 | 1,801 | 1,898 | 1,904 | 11,287 | 8,512 | 7,595
Operating income | 435 | 341 | 434 | 396 | 422 | 263 | 268 | 273 | 1,606 | 1,226 | 1,021
Income from continuing operations | 280 | 208 | 265 | 253 | 242 | 147 | 184 | 186 | 1,006 | 759 | 681
Loss from discontinued operations |  |  | 2 | 2 | (1) |  | (26) |  | 4 | (27) | 111
Net income | 280 | 208 | 267 | 255 | 241 | 147 | 158 | 186 | 1,010 | 732 | 792
Less: Net income attributable to noncontrolling interests | 3 | 10 | 9 | 9 | 10 | 3 | 5 | 8 | 31 | 26 | 45
Net income attributable to Aon stockholders | $ 277 | $ 198 | $ 258 | $ 246 | $ 231 | $ 144 | $ 153 | $ 178 | $ 979 | $ 706 | $ 747
Basic: |  |  |  |  |  |  |  |  |  |  |
lncome from continuing operations (in dollars per share) | $ 0.84 | $ 0.59 | $ 0.76 | $ 0.72 | $ 0.68 | $ 0.52 | $ 0.64 | $ 0.65 | $ 2.91 | $ 2.50 | $ 2.25
Loss from discontinued operations (in dollars per share) | $ 0.01 |  |  |  |  |  | $ (0.09) |  | $ 0.01 | $ (0.09) | $ 0.39
Net income (in dollars per share) | $ 0.85 | $ 0.59 | $ 0.76 | $ 0.72 | $ 0.68 | $ 0.52 | $ 0.55 | $ 0.65 | $ 2.92 | $ 2.41 | $ 2.64
Diluted: |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations (in dollars per share) | $ 0.82 | $ 0.59 | $ 0.75 | $ 0.71 | $ 0.67 | $ 0.51 | $ 0.63 | $ 0.63 | $ 2.86 | $ 2.46 | $ 2.19
Loss from discontinued operations (in dollars per share) | $ 0.01 |  |  |  |  |  | $ (0.09) |  | $ 0.01 | $ (0.09) | $ 0.38
Net income (in dollars per share) | $ 0.83 | $ 0.59 | $ 0.75 | $ 0.71 | $ 0.67 | $ 0.51 | $ 0.54 | $ 0.63 | $ 2.87 | $ 2.37 | $ 2.57
COMMON STOCK DATA |  |  |  |  |  |  |  |  |  |  |
Dividends paid per share (in dollars per share) | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.15 | $ 0.60 | $ 0.60 | $ 0.60
Price range: |  |  |  |  |  |  |  |  |  |  |
High (in dollars per share) | $ 51.11 | $ 52.17 | $ 54.58 | $ 53.17 | $ 46.24 | $ 40.08 | $ 44.34 | $ 43.16 | $ 54.58 | $ 46.24 |
Low (in dollars per share) | $ 39.90 | $ 39.68 | $ 48.66 | $ 43.31 | $ 38.72 | $ 35.10 | $ 37.06 | $ 37.33 | $ 39.68 | $ 35.10 |
Shares outstanding (in shares) | 324.4 | 323.3 | 326.7 | 330.5 | 332.3 | 270.9 | 269.7 | 269.4 | 324.4 | 332.3 |
Average monthly trading volume (in shares) |  |  |  |  | 54.4 | 80.3 | 38.7 | 37.2 |  | 52.7 |

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