CMS Energy Corporation Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities
Net Income	$ 808	$ 813	$ 1,330
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	1,180	1,126	1,114
Deferred income taxes and investment tax credits	157	89	249
Bad debt expense	34	50	22
Postretirement benefits contributions	(12)	(12)	(12)
Gain from sale of EnerBank	0	(5)	(657)
Other non‑cash operating activities and reconciling adjustments	(274)	(93)	(70)
Net cash used in discontinued operations	0	0	(111)
Changes in assets and liabilities
Accounts receivable and accrued revenue	241	(677)	(103)
Inventories	185	(450)	(93)
Accounts payable and accrued rate refunds	(136)	4	153
Other current assets and liabilities	(21)	14	13
Other non‑current assets and liabilities	147	(4)	(16)
Net cash provided by operating activities	2,309	855	1,819
Cash Flows from Investing Activities
Net proceeds from sale of EnerBank	0	5	898
Net cash provided by discontinued operations	0	0	78
Cost to retire property and other investing activities	(167)	(107)	(133)
Net cash used in investing activities	(3,386)	(2,476)	(1,233)
Cash Flows from Financing Activities
Proceeds from issuance of debt	3,551	1,899	335
Retirement of debt	(2,132)	(106)	(235)
Increase in notes payable	73	20	0
Issuance of common stock	192	69	26
Issuance of preferred stock, net of issuance costs	0	0	224
Payment of dividends on common and preferred stock	(579)	(544)	(508)
Proceeds from the sale of membership interest in VIE to tax equity investor	86	49	0
Contribution from noncontrolling interest	6	2	1
Net cash used in discontinued operations	0	0	(84)
Other financing costs	(54)	(62)	(54)
Net cash provided by (used in) financing activities	1,143	1,327	(295)
Net Increase (Decrease) in Cash and Cash Equivalents, Including Restricted Amounts	66	(294)	291
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	182	476	185
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	248	182	476
Cash transactions
Interest paid (net of amounts capitalized)	607	490	489
Income taxes paid	15	1	16
Non‑cash transactions
Capital expenditures not paid	265	228	196
Capital Expenditures
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	(2,407)	(2,374)	(2,076)
Covert Plant Acquisition
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	$ (812)	$ 0	$ 0