Rendering

Component: (Network and Table)
Network
40802 - Disclosure - Plant, Property, and Equipment (Schedule of Capital Leased Asssets) (Details)
(http://www.cmsenergy.com/2009-06-30/role/DisclosurePlantPropertyAndEquipmentScheduleOfCapitalLeasedAsssetsDetails)
TableStatement [Table]
Slicers (applies to each fact value in each table cell)
Statement [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
Balance at beginning of period
285,000,000  
280,000,000  
Capital Leased Assets, Gross, Additions
12,000,000  
9,000,000  
Capital Leased Assets, Gross, Disposals and Transfers
(6,000,000) 
(4,000,000) 
Balance at end of period
291,000,000  
 
285,000,000  
 
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation
124,000,000  
108,000,000