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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Income Statement [Abstract] |  |
Net revenues | $ 1,863 | $ 1,839
Operating costs, expenses and other income: |  |
Cost of services | 1,144 | 1,163
Selling, general and administrative | 442 | 419
Amortization expense | 19 | 21
Other operating expense, net | 1 | 8
Total operating costs, expenses and other income, net | 1,606 | 1,611
Operating income | 257 | 228
Other income (expense): |  |
Interest expense, net | (36) | (45)
Other expense, net | (49) | (78)
Total non-operating expenses, net | (85) | (123)
Income before income taxes and equity in earnings of equity method investees | 172 | 105
Income tax expense | (68) | (42)
Equity in earnings of equity method investees, net of taxes | 10 | 7
Net income | 114 | 70
Less: Net income attributable to noncontrolling interests | 12 | 9
Net income attributable to Quest Diagnostics | $ 102 | $ 61
Earnings per share attributable to Quest Diagnostics’ common stockholders: |  |
Basic (per share) | $ 0.71 | $ 0.42
Diluted (per share) | $ 0.70 | $ 0.42
Weighted average common shares outstanding: |  |
Basic (in Shares) | 143 | 144
Diluted (in Shares) | 144 | 146
Dividends per common share | $ 0.40 | $ 0.38

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