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Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Net Income (Loss) | $ 68 | $ 84 | $ 270 | $ 288
Retirement Benefits Liability |  |  |  |
Amortization of net actuarial loss, net of tax | 1 | 1 | 2 | 1
Investments |  |  |  |
Unrealized gain (loss) on investments, net of tax | (1) |  | (1) |
Derivative Instruments |  |  |  |
Reclassification adjustments included in net income, net of tax |  |  |  | 1
Other Comprehensive Income (Loss) |  | 1 | 1 | 2
Comprehensive Income | 68 | 85 | 271 | 290
Comprehensive Income Attributable to Noncontrolling Interest | 1 | 1 | 1 | 1
Comprehensive Income Attributable to CMS Energy | 67 | 84 | 270 | 289
Consumers Energy Company [Member] |  |  |  |
Net Income (Loss) | 84 | 109 | 299 | 330
Retirement Benefits Liability |  |  |  |
Amortization of net actuarial loss, net of tax | 1 | 1 | 2 | 1
Investments |  |  |  |
Unrealized gain (loss) on investments, net of tax | (2) | 1 | (2) | 3
Reclassification adjustments included in net income, net of tax |  |  | (5) |
Derivative Instruments |  |  |  |
Other Comprehensive Income (Loss) | (1) | 2 | (5) | 4
Comprehensive Income Attributable to CMS Energy | $ 83 | $ 111 | $ 294 | $ 334

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