Quarterly report pursuant to Section 13 or 15(d)

General - Additional Information (Detail)

v2.4.0.8
General - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 3 Months Ended 11 Months Ended
Mar. 31, 2014
country
Rigs
Mar. 31, 2013
Dec. 31, 2013
country
Mar. 31, 2014
Exxon Neftegas Limited [Member]
Mar. 31, 2013
Exxon Neftegas Limited [Member]
Mar. 31, 2014
ITS [Member]
Mar. 31, 2014
ITS [Member]
Revenue, Major Customer [Line Items]              
Number of countries in which Entity has operated since inception 50            
Number of countries in which entity operates     24        
Number of countries with international rental tools operations 10            
Barge drilling rigs 13            
Land rings 23            
Percentage accounted for under the equity method 50.00%            
Fair value adjustments for finite lived intangible assets           $ 8.5  
Weighted average useful life           3 years 3 years 4 months 24 days
Reimbursement cost 16.4 14.8          
Deposits in domestic bank 50.8   104.3        
Deposits in foreign banks $ 43.9   $ 50.1        
Percentage of revenue from major customer       17.10% 15.10%