XML 41 R53.htm IDEA: XBRL DOCUMENT v2.4.0.6
Commitments and Contingencies (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Schedule Of Guarantees  
Maximum potential undiscounted payments $ 337,148
Performance guarantees through letters of credit
 
Schedule Of Guarantees  
Term 2013-2017
Maximum potential undiscounted payments 235,957
Standby letters of credit
 
Schedule Of Guarantees  
Term 2013-2014
Maximum potential undiscounted payments 13,435
Commercial letters of credit
 
Schedule Of Guarantees  
Term 2013
Maximum potential undiscounted payments 1,113
Bid bonds and performance bonds
 
Schedule Of Guarantees  
Term 2013-2018
Maximum potential undiscounted payments $ 86,643