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CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
OPERATING REVENUES | $ 743.9 | $ 719.8 | $ 1,728.4 | $ 1,749.8
COST OF SALES | 269.8 | 259.8 | 645.4 | 682.3
OPERATING EXPENSES |  |  |  |
Other operation and maintenance | 113.1 | 109.4 | 354.6 | 334.3
Depreciation and amortization | 82.2 | 77.9 | 240.8 | 230.0
Taxes other than income | 21.5 | 21.9 | 66.5 | 68.8
Total operating expenses | 216.8 | 209.2 | 661.9 | 633.1
OPERATING INCOME | 257.3 | 250.8 | 421.1 | 434.4
OTHER INCOME (EXPENSE) |  |  |  |
Equity in earnings of unconsolidated affiliates | 34.5 | (71.9) | 79.5 | (12.0)
Allowance for equity funds used during construction | 3.9 | 2.2 | 9.2 | 5.4
Other income | 5.7 | 8.9 | 18.9 | 19.4
Other expense | (3.3) | (5.3) | (10.8) | (8.5)
Net other income (expense) | 40.8 | (66.1) | 96.8 | 4.3
INTEREST EXPENSE |  |  |  |
Interest on long-term debt | 35.8 | 37.0 | 107.3 | 110.9
Allowance for borrowed funds used during construction | (2.0) | (1.1) | (4.7) | (2.7)
Interest on short-term debt and other interest charges | 1.6 | 1.1 | 5.1 | 4.2
Interest expense | 35.4 | 37.0 | 107.7 | 112.4
INCOME BEFORE TAXES | 262.7 | 147.7 | 410.2 | 326.3
INCOME TAX EXPENSE | 79.1 | 36.5 | 129.9 | 84.4
NET INCOME | $ 183.6 | $ 111.2 | $ 280.3 | $ 241.9
BASIC AVERAGE COMMON SHARES OUTSTANDING | 199.7 | 199.7 | 199.7 | 199.6
DILUTED AVERAGE COMMON SHARES OUTSTANDING | 199.9 | 199.7 | 199.8 | 199.6
BASIC EARNINGS PER AVERAGE COMMON SHARE | $ 0.92 | $ 0.55 | $ 1.40 | $ 1.21
DILUTED EARNINGS PER AVERAGE COMMON SHARE | 0.92 | 0.55 | 1.40 | 1.21
DIVIDENDS DECLARED PER COMMON SHARE | $ 0.30250 | $ 0.27500 | $ 0.85250 | $ 0.77500

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