v3.5.0.2

Goodwill (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) item | Sep. 30, 2016 USD ($) GWh
Goodwill |  |
Period of declining power prices | 2 years |
Goodwill | $ 37.6 | $ 134.5
Number of asset groups tested under step one | item | 5 |
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 134.5
Impairment of goodwill |  | (78.8)
Translation Adjustments |  | (18.1)
Goodwill, Ending Balance | $ 37.6 | 37.6
Morris And Nipigon |  |
Goodwill |  |
Number of reporting units not significantly impacted by declining power prices | item | 2 |
Goodwill | $ 6.9 | 6.9
Changes in the carrying amount of goodwill |  |
Goodwill, Ending Balance | 6.9 | $ 6.9
Curtis Palmer |  |
Goodwill |  |
Quantity triggering agreement expiration | GWh |  | 10,000
Expected period of expiration before specified date (in years) |  | 2 years
Moresby Lake |  |
Changes in the carrying amount of goodwill |  |
Impairment of goodwill |  | $ 0.0
East U.S. |  |
Goodwill |  |
Goodwill | 3.3 | 3.3
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 3.3
Goodwill, Ending Balance | 3.3 | 3.3
East U.S. | Curtis Palmer |  |
Goodwill |  |
Goodwill | 29.1 | 44.5
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 44.5
Impairment of goodwill |  | (15.4)
Goodwill, Ending Balance | 29.1 | 29.1
Canada | Nipigon |  |
Goodwill |  |
Goodwill | 3.6 | 3.6
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 3.6
Goodwill, Ending Balance | 3.6 | 3.6
Canada | North Bay And Kapuskasing |  |
Goodwill |  |
Long lived asset impairment charge | 5.9 | 5.9
Canada | North Bay |  |
Goodwill |  |
Goodwill |  | 8.3
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 8.3
Impairment of goodwill |  | (6.5)
Translation Adjustments |  | (1.8)
Canada | Kapuskasing |  |
Goodwill |  |
Goodwill |  | 8.8
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 8.8
Impairment of goodwill |  | (6.7)
Translation Adjustments |  | (2.1)
Canada | Mamquam |  |
Goodwill |  |
Goodwill |  | 64.4
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 64.4
Impairment of goodwill |  | (50.2)
Translation Adjustments |  | (14.2)
Canada | Moresby Lake |  |
Goodwill |  |
Goodwill | 1.6 | 1.6
Changes in the carrying amount of goodwill |  |
Goodwill, Beginning Balance |  | 1.6
Goodwill, Ending Balance | $ 1.6 | $ 1.6

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