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Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Current Assets |  |
Cash and cash equivalents | $ 358 | $ 172
Restricted cash and cash equivalents | 31 | 32
Accounts receivable and accrued revenue, less allowances | 754 | 914
Notes receivable | 88 | 63
Accounts receivable - related parties | 11 | 10
Accrued power supply and gas revenue | 152 |
Inventories at average cost |  |
Gas in underground storage | 582 | 660
Materials and supplies | 109 | 107
Generating plant fuel stock | 84 | 114
Deferred income taxes | 29 | 126
Deferred property taxes | 148 | 202
Regulatory assets | 11 | 40
Prepayments and other current assets | 108 | 86
Total current assets | 2,465 | 2,526
Plant, Property, and Equipment |  |
Plant, property, and equipment, gross | 16,583 | 16,184
Less accumulated depreciation and amortization | 5,242 | 5,087
Plant, property, and equipment, net | 11,341 | 11,097
Construction work in progress | 1,339 | 1,149
Total plant, property, and equipment | 12,680 | 12,246
Other Non-current Assets |  |
Regulatory assets | 1,463 | 1,530
Accounts and notes receivable, less allowances | 687 | 646
Investments | 62 | 59
Other | 362 | 409
Total other non-current assets | 2,574 | 2,644
Total Assets | 17,719 | 17,416
Current Liabilities |  |
Current portion of long-term debt, capital and financing obligation | 439 | 562
Notes payable |  | 170
Accounts payable | 587 | 585
Accounts payable - related parties | 10 | 10
Accrued rate refunds |  | 12
Accrued interest | 103 | 96
Accrued taxes | 225 | 297
Regulatory liabilities | 70 | 67
Other current liabilities | 129 | 146
Total current liabilities | 1,563 | 1,945
Non-current Liabilities |  |
Long-term debt | 7,535 | 7,101
Non-current portion of capital and financing obligations | 131 | 138
Regulatory liabilities | 2,220 | 2,215
Postretirement benefits | 241 | 239
Asset retirement obligations | 329 | 325
Deferred investment tax credit | 39 | 40
Deferred income taxes | 1,676 | 1,616
Other non-current liabilities | 303 | 306
Total non-current liabilities | 12,474 | 11,980
Commitments and Contingencies (Notes 2 and 3) |  |
Equity |  |
Common stock | 3 | 3
Other paid-in capital | 4,761 | 4,715
Accumulated other comprehensive income (loss) | (20) | (22)
Retained earnings (Accumulated deficit) | (1,099) | (1,242)
Total common stockholder's equity | 3,645 | 3,454
Noncontrolling interests | 37 | 37
Total equity | 3,682 | 3,491
Total Liabilities and Equity | 17,719 | 17,416
Consumers Energy Company [Member] |  |
Current Assets |  |
Cash and cash equivalents | 98 | 18
Restricted cash and cash equivalents | 31 | 31
Accounts receivable and accrued revenue, less allowances | 739 | 902
Notes receivable |  | 14
Accounts receivable - related parties | 1 | 4
Accrued power supply and gas revenue | 152 |
Inventories at average cost |  |
Gas in underground storage | 582 | 653
Materials and supplies | 104 | 103
Generating plant fuel stock | 82 | 113
Deferred property taxes | 148 | 202
Regulatory assets | 11 | 40
Prepayments and other current assets | 101 | 77
Total current assets | 2,049 | 2,157
Plant, Property, and Equipment |  |
Plant, property, and equipment, gross | 16,441 | 16,044
Less accumulated depreciation and amortization | 5,174 | 5,022
Plant, property, and equipment, net | 11,267 | 11,022
Construction work in progress | 1,337 | 1,147
Total plant, property, and equipment | 12,604 | 12,169
Other Non-current Assets |  |
Regulatory assets | 1,463 | 1,530
Accounts and notes receivable, less allowances | 4 | 11
Investments | 34 | 29
Other | 233 | 283
Total other non-current assets | 1,734 | 1,853
Total Assets | 16,387 | 16,179
Current Liabilities |  |
Current portion of long-term debt, capital and financing obligation | 67 | 64
Notes payable |  | 170
Accounts payable | 573 | 571
Accounts payable - related parties | 14 | 13
Accrued rate refunds |  | 12
Accrued interest | 63 | 63
Accrued taxes | 283 | 353
Deferred income taxes | 121 | 55
Regulatory liabilities | 70 | 67
Other current liabilities | 97 | 112
Total current liabilities | 1,288 | 1,480
Non-current Liabilities |  |
Long-term debt | 4,555 | 4,579
Non-current portion of capital and financing obligations | 131 | 138
Regulatory liabilities | 2,220 | 2,215
Postretirement benefits | 182 | 179
Asset retirement obligations | 328 | 324
Deferred investment tax credit | 39 | 40
Deferred income taxes | 2,143 | 2,115
Other non-current liabilities | 251 | 252
Total non-current liabilities | 9,849 | 9,842
Commitments and Contingencies (Notes 2 and 3) |  |
Equity |  |
Common stock | 841 | 841
Other paid-in capital | 3,572 | 3,257
Accumulated other comprehensive income (loss) | 2 | (2)
Retained earnings (Accumulated deficit) | 798 | 724
Total common stockholder's equity | 5,213 | 4,820
Preferred stock | 37 | 37
Total equity | 5,250 | 4,857
Total Liabilities and Equity | $ 16,387 | $ 16,179

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- Definition Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29 -Article 5 + Details
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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- Definition The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 31 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.31(a)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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