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CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Revenue | $ 467.3 | $ 413.8 | $ 1,314.5 | $ 1,302.4
Operating expenses: |  |  |  |
Compensation and related expenses | 196.8 | 168.9 | 565.9 | 544.9
Selling, general and administrative | 93.9 | 83.5 | 267.7 | 261.6
Intangible amortization and impairments | 24.0 | 22.1 | 169.1 | 66.3
Depreciation and other amortization | 3.5 | 4.0 | 10.6 | 11.6
Other operating expenses | 9.4 | 9.3 | 27.7 | 27.1
Total operating expenses | 327.6 | 287.8 | 1,041.0 | 911.5
Operating income | 139.7 | 126.0 | 273.5 | 390.9
Non-operating (income) and expenses: |  |  |  |
Investment and other (income) loss | (6.9) | 9.5 | (20.3) | 6.8
Income from equity method investments | (19.4) | (9.8) | (47.3) | (40.1)
Interest expense | 21.8 | 18.1 | 58.8 | 55.6
Imputed interest expense and contingent payment arrangements | 6.7 | 8.3 | (35.7) | 24.9
Total non-operating (income) and expenses | 2.2 | 26.1 | (44.5) | 47.2
Income before income taxes | 137.5 | 99.9 | 318.0 | 343.7
Income taxes | 19.4 | 19.8 | 46.0 | 73.2
Net income | 118.1 | 80.1 | 272.0 | 270.5
Net income (non-controlling interests) | (63.2) | (40.0) | (173.1) | (145.9)
Net income (controlling interest) | $ 54.9 | $ 40.1 | $ 98.9 | $ 124.6
Average shares outstanding - basic (in shares) | 51.7 | 51.9 | 51.6 | 51.9
Average shares outstanding - diluted (in shares) | 53.0 | 53.0 | 52.9 | 53.2
Earnings per share - basic (in dollars per share) | $ 1.06 | $ 0.77 | $ 1.92 | $ 2.40
Earnings per share - diluted (in dollars per share) | $ 1.04 | $ 0.76 | $ 1.87 | $ 2.34

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