Subsequent Event (Details) (Brazilian Commercial Operations [Member], USD $) In Millions, unless otherwise specified	Nov. 30, 2011
Minimum [Member]
Subsequent Event [Line Items]
Expected operating losses and other charges	$ 22.0
Expected impairment on investment due to a foreign currency exchange loss	8.0
Expected provison for income taxes	8.0
Maximum [Member]
Subsequent Event [Line Items]
Expected operating losses and other charges	25.0
Expected impairment on investment due to a foreign currency exchange loss	10.0
Expected provison for income taxes	$ 10.0