Gain on sale of assets (Tables)

12 Months Ended

Dec. 31, 2012

Gain on sale of assets [Abstract]

Gain on sale of assets

The Company has recognized the following gains and losses on sales of assets:

(In US$ millions)	Net proceeds		Book value on disposal		Gain/Loss
Year ended December 31, 2012:		-		-		-
Total for year ended December 31, 2012		-		-		-
Year ended December 31, 2011:
Sale of jack-up West Juno		248		226		22
Total for year ended December 31, 2011		248		226		22
Year ended December 31, 2010:
Sale of Jack-up rig West Larissa		55		29		26
Total for year ended December 31, 2010		55		29		26