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Long Term Debt - Guarantees (Narrative) (Detail)
$ in Millions
Dec. 31, 2015
USD ($)
Surety Bond [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations $ 63.2
Commercial standby letters of credit [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations 103.9
Bank Gurantees [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations 51.3
Bank Gurantees Collaterized [Member]  
Guarantee Obligations [Line Items]  
Gurantees Obligations $ 13.1