XML 62 R50.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Related Party Transactions - Consumers (Tables) (Consumers Energy Company [Member]) | 12 Months Ended
--- | ---
Dec. 31, 2013
Consumers Energy Company [Member] |
Schedule of Related Party Transactions, by Related Party Table |
In Millions
Description | Related Party | 2013 | 2012 | 2011 |
Purchases of capacity and energy | Affiliates of CMS Enterprises |  | $ | 89 |  | $ | 86 |  | $ | 81 |

X
- 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
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration