Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net income	$ 213	$ 241
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax of $- for both periods	1	1
Amortization of prior service credit	(1)	0
Investments
Unrealized loss on investments	0	(1)
Derivatives
Unrealized loss on derivative instruments, net of tax of $- for both periods	(1)
Unrealized loss on derivative instruments, net of tax of $- for both periods		0
Other Comprehensive Loss	(1)	0
Comprehensive Income	212	241
Consumers Energy Company
Net income	226	242
Retirement Benefits Liability
Amortization of net actuarial loss, net of tax of $- for both periods	0	1
Investments
Unrealized loss on investments	0	(1)
Derivatives
Other Comprehensive Loss	0	0
Comprehensive Income	$ 226	$ 242