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v3.3.1.900

Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Net income | $ 525 | $ 479 | $ 454
Retirement Benefits Liability |  |  |
Net gain (loss) arising during the period, net of tax | 1 | (29) | 26
Prior service credit adjustment, net of tax |  |  | 5
Amortization of net actuarial loss (gain), net of tax | 5 | 3 | 4
Amortization of prior service credit, net of tax | (1) | (1) |
Investments |  |  |
Unrealized gain (loss) on investments, net of tax | (3) | (1) | (2)
Derivative Instruments |  |  |
Reclassification adjustments included in net income, net of tax |  | 1 |
Other Comprehensive Income (Loss) | 2 | (27) | 33
Comprehensive Income | 527 | 452 | 487
Comprehensive Income Attributable to Noncontrolling Interest | 2 | 2 | 2
Comprehensive Income Attributable to CMS Energy | 525 | 450 | 485
Consumers Energy Company [Member] |  |  |
Net income | 594 | 567 | 534
Retirement Benefits Liability |  |  |
Net gain (loss) arising during the period, net of tax | 3 | (11) | 5
Amortization of net actuarial loss (gain), net of tax | 4 | 2 | 3
Investments |  |  |
Unrealized gain (loss) on investments, net of tax | (1) | 4 | 1
Reclassification adjustments included in net income, net of tax | (5) |  | (3)
Derivative Instruments |  |  |
Other Comprehensive Income (Loss) | 1 | (5) | 6
Comprehensive Income Attributable to CMS Energy | $ 595 | $ 562 | $ 540

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