COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($) $ in Millions |
Mar. 31, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Loans to and accounts receivable from the Canadian Entities | $ 49.0 | $ 48.6 |
| Contingent Liabilities recognized in Consolidated Financials | 37.5 | 37.2 |
| Michigan Electricity Matters [Member] | Ìý | Ìý |
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Loss Contingency Accrual | 13.6 | Ìý |
| Fair Value, Inputs, Level 3 [Member] | Ìý | Ìý |
| Loss Contingencies [Line Items] | Ìý | Ìý |
| Loans to and accounts receivable from the Canadian Entities | 49.0 | 48.6 |
| Contingent Liabilities recognized in Consolidated Financials | $ 37.5 | $ 37.2 |
| X | ||||||||||
- Definition Contingent Liabilities recognized in Consolidated Financials No definition available.
|
| X | ||||||||||
- Definition Loans to and accounts receivables from the Canadian Entities No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount of loss contingency liability. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|