CMS Energy Corporation Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Common Stock	Other Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retirement benefits liability	Retained Earnings	Cumulative Preferred Stock	Noncontrolling Interests
Total Equity at Beginning of Period at Dec. 31, 2022	$ 7,595	$ 3	$ 5,490		$ (52)	$ 1,350	$ 224	$ 580
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			11
Common stock repurchased			(7)
Net gain arising during the period	1				1
Amortization of net actuarial loss	0				0
Net Income	194					204		(10)
Dividends declared on common stock						(142)
Dividends declared on preferred stock						(2)
Other changes in noncontrolling interests								2
Total Equity at End of Period at Mar. 31, 2023	$ 7,652	3	5,494	$ (51)		1,410	224	572
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.4875
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0.2625
Total Equity at Beginning of Period at Dec. 31, 2023	$ 8,125	3	5,705		(46)	1,658	224	581
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued			281
Common stock repurchased			(11)
Net gain arising during the period	0				0
Amortization of net actuarial loss	1				$ 1
Net Income	263					287		(24)
Dividends declared on common stock						(154)
Dividends declared on preferred stock						(2)
Other changes in noncontrolling interests								3
Total Equity at End of Period at Mar. 31, 2024	$ 8,506	$ 3	$ 5,975	$ (45)		$ 1,789	$ 224	$ 560
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (in dollars per share)	$ 0.5150
Dividends declared per preferred stock Series C depositary share (in dollars per share)	$ 0.2625