Quarterly report pursuant to Section 13 or 15(d)

Hurricane Remediation And Insurance Claims (Narrative) (Details)

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Hurricane Remediation And Insurance Claims (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 54 Months Ended
Sep. 30, 2008
Dec. 31, 2012
Hurricane Remediation And Insurance Claims [Abstract]    
Retention amount per occurrence $ 10.0  
Maximum insurance coverage policy limit due to named windstorms for per incident 150.0  
Maximum general and excess liability insurance policy coverage 250.0  
Insurance recoveries related to hurricanes   $ 140.0