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Related Party Transactions - Consumers (Tables) | 12 Months Ended
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Dec. 31, 2015
Consumers Energy Company [Member] |
Schedule of Related Party Transactions, by Related Party Table |
In Millions
Description | Related Party | 2015 | 2014 | 2013 |
Purchases of capacity and energy | Affiliates of CMS Enterprises |  | $ | 83 |  | $ | 89 |  | $ | 89 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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- Details
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