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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Net Income $ 183 $ 210 $ 696 $ 590
Retirement Benefits Liability        
Net loss arising during the period, net of tax 0 (5) 0 (5)
Settlement arising during the period, net of tax 0 1 0 1
Amortization of net actuarial loss, net of tax 1 1 5 3
Amortization of prior service credit 0 0 (1) (1)
Derivatives        
Unrealized gain (loss) on derivative instruments, net of tax of $—, $—, $—, and $(1) 0 (1) 1 (5)
Reclassification adjustments included in net income, net of tax of $—, $—, $1, and $— 0 1 0 1
Other Comprehensive Income (Loss) 1 (3) 5 (6)
Comprehensive Income 184 207 701 584
Comprehensive Loss Attributable to Noncontrolling Interests (6) (8) (18) (7)
Comprehensive Income Attributable to CMS Energy 190 215 719 591
Consumers Energy Company        
Net Income 186 230 712 625
Retirement Benefits Liability        
Amortization of net actuarial loss, net of tax 1 1 2 1
Derivatives        
Other Comprehensive Income (Loss) 1 1 2 1
Comprehensive Income $ 187 $ 231 $ 714 $ 626