Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Current Assets
Cash and cash equivalents	$ 234	$ 153
Accounts receivable and accrued revenue, less allowance of $20 in both periods	997	964
Notes receivable, less allowance of $26 in 2019 and $24 in 2018	250	233
Assets held for sale	39	0
Accounts receivable – related parties	14	14
Accrued gas revenue	18	16
Inventories at average cost
Gas in underground storage	256	450
Materials and supplies	148	143
Generating plant fuel stock	38	57
Deferred property taxes	226	279
Regulatory assets	26	37
Prepayments and other current assets	97	101
Total current assets	2,376	2,468
Plant, Property, and Equipment
Plant, property, and equipment, gross	24,729	24,400
Less accumulated depreciation and amortization	7,236	7,037
Plant, property, and equipment, net	17,493	17,363
Construction work in progress	822	763
Total plant, property, and equipment	18,315	18,126
Other Non-current Assets
Regulatory assets	1,711	1,743
Accounts and notes receivable	1,791	1,645
Investments	62	69
Other	538	478
Total other non-current assets	4,102	3,935
Total Assets	24,793	24,529
Current Liabilities
Current portion of long-term debt, finance leases, and other financing	842	996
Notes payable	30	97
Accounts payable	544	723
Accounts payable – related parties	6	10
Accrued rate refunds	25	4
Accrued interest	109	94
Accrued taxes	295	398
Regulatory liabilities	107	155
Other current liabilities	148	147
Total current liabilities	2,106	2,624
Non-current Liabilities
Long-term debt	11,105	10,615
Non-current portion of finance leases and other financing	91	69
Regulatory liabilities	3,736	3,681
Postretirement benefits	440	436
Asset retirement obligations	433	432
Deferred investment tax credit	98	99
Deferred income taxes	1,544	1,487
Other non-current liabilities	345	294
Total non-current liabilities	17,792	17,113
Commitments and contingencies
Common stockholders’ equity
Common stock, authorized 350.0 shares; outstanding 283.7 shares in 2019 and 283.4 shares in 2018	3	3
Other paid-in capital	5,087	5,088
Accumulated other comprehensive loss	(66)	(65)
Accumulated deficit	(166)	(271)
Total common stockholders’ equity	4,858	4,755
Noncontrolling interests	37	37
Total equity	4,895	4,792
Total Liabilities and Equity	24,793	24,529
Consumers Energy Company
Current Assets
Cash and cash equivalents	37	39
Accounts receivable and accrued revenue, less allowance of $20 in both periods	894	855
Assets held for sale	35	0
Accounts receivable – related parties	9	15
Accrued gas revenue	18	16
Inventories at average cost
Gas in underground storage	256	450
Materials and supplies	143	137
Generating plant fuel stock	37	52
Deferred property taxes	226	279
Regulatory assets	26	37
Prepayments and other current assets	86	83
Total current assets	1,794	1,980
Plant, Property, and Equipment
Plant, property, and equipment, gross	24,300	23,963
Less accumulated depreciation and amortization	7,156	6,958
Plant, property, and equipment, net	17,144	17,005
Construction work in progress	812	756
Total plant, property, and equipment	17,956	17,761
Other Non-current Assets
Regulatory assets	1,711	1,743
Accounts and notes receivable	29	27
Accounts and notes receivable – related parties	104	104
Other	458	410
Total other non-current assets	2,302	2,284
Total Assets	22,052	22,025
Current Liabilities
Current portion of long-term debt, finance leases, and other financing	47	48
Notes payable	30	97
Accounts payable	515	685
Accounts payable – related parties	11	14
Accrued rate refunds	25	4
Accrued interest	79	59
Accrued taxes	369	436
Regulatory liabilities	107	155
Other current liabilities	115	120
Total current liabilities	1,298	1,618
Non-current Liabilities
Long-term debt	6,565	6,779
Non-current portion of finance leases and other financing	91	69
Regulatory liabilities	3,736	3,681
Postretirement benefits	396	392
Asset retirement obligations	430	428
Deferred investment tax credit	98	99
Deferred income taxes	1,840	1,809
Other non-current liabilities	274	230
Total non-current liabilities	13,430	13,487
Commitments and contingencies
Common stockholders’ equity
Common stock, authorized 350.0 shares; outstanding 283.7 shares in 2019 and 283.4 shares in 2018	841	841
Other paid-in capital	5,049	4,699
Accumulated other comprehensive loss	(21)	(21)
Accumulated deficit	1,418	1,364
Total common stockholders’ equity	7,287	6,883
Preferred stock	37	37
Total equity	7,324	6,920
Total Liabilities and Equity	$ 22,052	$ 22,025