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Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Operating Revenue | $ 6,566 |  | $ 6,253 |  | $ 6,503 |
Operating Expenses |  |  |  |  |  |
Fuel for electric generation | 621 |  | 598 |  | 636 |
Purchased and interchange power | 1,387 |  | 1,364 |  | 1,282 |
Purchased power - related parties | 90 |  | 87 |  | 82 |
Cost of gas sold | 1,228 |  | 1,150 |  | 1,512 |
Maintenance and other operating expenses | 1,236 |  | 1,224 |  | 1,237 |
Depreciation and amortization | 628 |  | 598 |  | 546 |
General taxes | 234 |  | 229 |  | 205 |
Total operating expenses | 5,424 |  | 5,250 |  | 5,500 |
Operating Income | 1,142 |  | 1,003 |  | 1,003 |
Other Income (Expense) |  |  |  |  |  |
Interest income | 3 |  | 5 |  | 9 |
Allowance for equity funds used during construction | 6 |  | 8 |  | 6 |
Income from equity method investees | 13 | [1] | 17 | [1] | 9 | [1]
Other income | 10 |  | 11 |  | 16 |
Other expense | (20) |  | (33) |  | (22) |
Total other income (expense) | 12 |  | 8 |  | 18 |
Interest Charges |  |  |  |  |  |
Interest on long-term debt | 385 |  | 372 |  | 396 |
Other interest expense | 16 |  | 21 |  | 23 |
Allowance for borrowed funds used during construction | (3) |  | (4) |  | (4) |
Total interest charges | 398 |  | 389 |  | 415 |
Income Before Income Taxes | 756 |  | 622 |  | 606 |
Income Tax Expense | 302 |  | 245 |  | 191 |
Income From Continuing Operations | 454 |  | 377 |  | 415 |
Income From Discontinued Operations, Net |  |  | 7 | [2] | 2 | [3]
Net Income | 454 |  | 384 |  | 417 |
Income Attributable to Noncontrolling Interests | 2 |  | 2 |  | 2 |
Net Income Attributable to Common Stockholders |  |  |  |  |  |
Amounts attributable to continuing operations | 452 |  | 375 |  | 413 |
Amounts attributable to discontinued operations |  |  | 7 |  | 2 |
Net Income Available to Common Stockholders | 452 |  | 382 |  | 415 |
Income Attributable to Noncontrolling Interests |  |  |  |  |  |
Amounts attributable to continuing operations | 2 |  | 2 |  | 2 |
Amounts attributable to discontinued operations |  |  |  |  |  |
Income attributable to noncontrolling interests | 2 |  | 2 |  | 2 |
Basic Earnings Per Average Common Share |  |  |  |  |  |
Basic earnings from continuing operations | $ 1.71 |  | $ 1.43 |  | $ 1.65 |
Basic earnings from discontinued operations |  |  | $ 0.03 |  | $ 0.01 |
Basic earnings attributable to common stock | $ 1.71 |  | $ 1.46 |  | $ 1.66 |
Diluted Earnings Per Average Common Share |  |  |  |  |  |
Diluted earnings from continuing operations | $ 1.66 |  | $ 1.39 |  | $ 1.57 |
Diluted earnings from discontinued operations |  |  | $ 0.03 |  | $ 0.01 |
Diluted earnings attributable to common stock | $ 1.66 |  | $ 1.42 |  | $ 1.58 |
Dividends Declared Per Common Share | $ 1.02 |  | $ 0.96 |  | $ 0.84 |
Consumers Energy Company [Member] |  |  |  |  |  |
Operating Revenue | 6,321 |  | 6,013 |  | 6,253 |
Operating Expenses |  |  |  |  |  |
Fuel for electric generation | 541 |  | 517 |  | 559 |
Purchased and interchange power | 1,361 |  | 1,339 |  | 1,267 |
Purchased power - related parties | 89 |  | 86 |  | 81 |
Cost of gas sold | 1,187 |  | 1,110 |  | 1,438 |
Maintenance and other operating expenses | 1,174 |  | 1,162 |  | 1,175 |
Depreciation and amortization | 622 |  | 592 |  | 542 |
General taxes | 229 |  | 223 |  | 206 |
Total operating expenses | 5,203 |  | 5,029 |  | 5,268 |
Operating Income | 1,118 |  | 984 |  | 985 |
Other Income (Expense) |  |  |  |  |  |
Interest income | 2 |  | 4 |  | 7 |
Interest and dividend income - related parties | 1 |  | 1 |  | 2 |
Allowance for equity funds used during construction | 6 |  | 8 |  | 6 |
Other income | 14 |  | 16 |  | 19 |
Other expense | (16) |  | (33) |  | (20) |
Total other income (expense) | 7 |  | (4) |  | 14 |
Interest Charges |  |  |  |  |  |
Interest on long-term debt | 237 |  | 232 |  | 251 |
Other interest expense | 11 |  | 16 |  | 18 |
Allowance for borrowed funds used during construction | (3) |  | (4) |  | (4) |
Total interest charges | 245 |  | 244 |  | 265 |
Income Before Income Taxes | 880 |  | 736 |  | 734 |
Income Tax Expense | 346 |  | 297 |  | 267 |
Net Income | 534 |  | 439 |  | 467 |
Preferred Stock Dividends and Distribution | 2 |  | 2 |  | 2 |
Net Income Attributable to Common Stockholders |  |  |  |  |  |
Net Income Available to Common Stockholders | $ 532 |  | $ 437 |  | $ 465 |
[1] | Consumers had no significant equity method investments.
[2] | Includes an $11 million ($7 million net of tax) reversal of a loss on disposal due to the elimination of a liability associated with the 2003 sale of Panhandle.
[3] | Includes an operating gain of $3 million related to a litigation settlement at CMS Viron.

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