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Operating leases
12 Months Ended
Dec. 31, 2012
Operating leases [Abstract]  
Operating leases
Note 9 – Operating leases
 
The Company has operating leases relating to premises, the most significant being its offices in Stavanger, London, Singapore, Houston, Rio de Janeiro, Dubai and Aberdeen. In the years ended December 31, 2012, 2011 and 2010 rental expenses amounted to $25 million, $20 million and $21 million, respectively. Future minimum rental payments are as follows:
 
Year
 
US$ million
 
2013
 
 
23
 
2014
 
 
13
 
2015
 
 
10
 
2016
 
 
7
 
2017
 
 
8
 
2018 and thereafter
 
 
21
 
Total
 
 
82