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CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Operating Revenues |  |
Electric | $ 2,951 | $ 3,065
Natural gas | 1,105 | 1,203
Total operating revenues | 4,056 | 4,268
Operating Expenses |  |
Cost of electricity | 819 | 847
Cost of natural gas | 289 | 325
Operating and maintenance | 1,597 | 1,517
Depreciation, amortization, and decommissioning | 752 | 712
Total operating expenses | 3,457 | 3,401
Operating Income | 599 | 867
Interest income | 9 | 5
Interest expense | (220) | (218)
Other income, net | 108 | 34
Income Before Income Taxes | 496 | 688
Income tax provision | 51 | 109
Net Income | 445 | 579
Preferred stock dividend requirement of subsidiary | 3 | 3
Preferred stock dividend requirement | 0 |
Income Available for Common Stock | $ 442 | $ 576
Weighted Average Common Shares Outstanding, Basic (in shares) | 515 | 508
Weighted Average Common Shares Outstanding, Diluted (in shares) | 516 | 511
Net Earnings Per Common Share, Basic (in dollars per share) | $ 0.86 | $ 1.13
Net Earnings Per Common Share, Diluted (in dollars per share) | 0.86 | 1.13
Dividends Declared Per Common Share (in dollars per share) | $ 0 | $ 0.49
Pacific Gas & Electric Co |  |
Operating Revenues |  |
Electric | $ 2,951 | $ 3,067
Natural gas | 1,105 | 1,204
Total operating revenues | 4,056 | 4,271
Operating Expenses |  |
Cost of electricity | 819 | 847
Cost of natural gas | 289 | 325
Operating and maintenance | 1,597 | 1,518
Depreciation, amortization, and decommissioning | 752 | 712
Total operating expenses | 3,457 | 3,402
Operating Income | 599 | 869
Interest income | 9 | 5
Interest expense | (217) | (216)
Other income, net | 109 | 31
Income Before Income Taxes | 500 | 689
Income tax provision | 48 | 120
Net Income | 452 | 569
Preferred stock dividend requirement of subsidiary | 0 |
Preferred stock dividend requirement | 3 | 3
Income Available for Common Stock | $ 449 | $ 566

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