Consolidated Statements Of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities
Net income	$ 307	$ 381
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	514	483
Deferred income taxes and investment tax credit	60	60
Other non-cash operating activities and reconciling adjustments	9	22
Cash provided by (used in) changes in assets and liabilities
Accounts and notes receivable and accrued revenue	190	298
Inventories	98	101
Accounts payable and accrued rate refunds	(48)	(41)
Other current and non-current assets and liabilities	55	112
Net cash provided by operating activities	1,185	1,416
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	(973)	(872)
Increase in EnerBank notes receivable	(170)	(80)
Purchase of notes receivable by EnerBank	(220)	0
Cost to retire property and other investing activities	(47)	(56)
Net cash used in investing activities	(1,410)	(1,008)
Cash Flows from Financing Activities
Proceeds from issuance of debt	1,455	794
Retirement of debt	(1,104)	(660)
Increase in EnerBank certificates of deposit	371	136
Decrease in notes payable	(97)	(170)
Issuance of common stock	6	36
Payment of dividends on common and preferred stock	(218)	(204)
Payment of finance lease obligations and other financing costs	(29)	(43)
Net cash provided by (used in) financing activities	384	(111)
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts	159	297
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	175	204
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	334	501
Non-cash transactions
Capital expenditures not paid	150	140
Consumers Energy Company
Cash Flows from Operating Activities
Net income	324	394
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	506	478
Deferred income taxes and investment tax credit	41	35
Other non-cash operating activities and reconciling adjustments	4	15
Cash provided by (used in) changes in assets and liabilities
Accounts and notes receivable and accrued revenue	187	172
Inventories	96	98
Accounts payable and accrued rate refunds	(41)	(34)
Other current and non-current assets and liabilities	(7)	(60)
Net cash provided by operating activities	1,110	1,098
Cash Flows from Investing Activities
Capital expenditures (excludes assets placed under finance lease)	(963)	(859)
Cost to retire property and other investing activities	(63)	(55)
Net cash used in investing activities	(1,026)	(914)
Cash Flows from Financing Activities
Proceeds from issuance of debt	297	544
Retirement of debt	(528)	(330)
Decrease in notes payable	(97)	(170)
Stockholder contribution	675	250
Payment of dividends on common and preferred stock	(273)	(246)
Payment of finance lease obligations and other financing costs	(2)	(21)
Net cash provided by (used in) financing activities	72	27
Net Increase in Cash and Cash Equivalents, Including Restricted Amounts	156	211
Cash and Cash Equivalents, Including Restricted Amounts, Beginning of Period	56	65
Cash and Cash Equivalents, Including Restricted Amounts, End of Period	212	276
Non-cash transactions
Capital expenditures not paid	$ 138	$ 116

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