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Revenue (Components Of Accounts Receivable And Accrued Revenue) (Details) - USD ($) $ in Millions | Mar. 31, 2018 | Dec. 31, 2017
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Accounts receivable and accrued revenue from contracts with customers | $ 808 | $ 844
Other accounts receivable | 194 | 188
Total accounts receivable and accrued revenue | 1,002 | 1,032
Consumers Energy Company [Member] |  |
Accounts receivable and accrued revenue from contracts with customers | 802 | 838
Other accounts receivable | 56 | 47
Total accounts receivable and accrued revenue | 858 | 885
Enterprises [Member] |  |
Accounts receivable and accrued revenue from contracts with customers | $ 6 | $ 6

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + 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(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 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(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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