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v2.3.0.11

Financings (Dividend Restrictions) (Details) (USD $) | 6 Months Ended
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Jun. 30, 2011
Limitation on payment of stock dividends | $ 1,100,000,000
Consumers Energy Company [Member] |
Common stock dividends from Consumers | 196,000,000
Unrestricted retained earnings | $ 452,000,000

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