|
Goderich Tornado (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | 11 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|---|
|
Jun. 30, 2012
|
Mar. 31, 2012
|
Jun. 30, 2012
|
Jun. 30, 2011
|
Jun. 30, 2012
|
Dec. 31, 2011
|
|
| Product cost: | ||||||
| Property, plant and equipment impairment charges | $ 0 | $ 0 | ||||
| Site clean-up and restoration costs | 1.1 | 7.0 | ||||
| Estimated insurance recoveries recognized | (1.1) | (7.0) | ||||
| Net impact on product cost excluding business interruption | 0 | 0 | ||||
| Total insurance advances | 1.1 | 25.0 | 7.0 | |||
| Deferred revenue | 18 | |||||
| Insurance advances for operating purposes, Goderich tornado | 18.0 | 0 | 50.0 | |||
| Total amount recorded in deferred revenue since the tornado | 27.5 | |||||
| Total insurance advances received and recorded as reduction to salt product costs | 21.5 | |||||
| Impairment charges related to damaged property, plant, and equipment | 4.8 | |||||
| Estimated recoverable business interruption losses | $ 3 | $ 17 | $ 33 | |||