Accumulated other comprehensive income (Tables)

12 Months Ended

Dec. 31, 2012

Accumulated other comprehensive income [Abstract]

Accumulated other comprehensive income

Accumulated other comprehensive income for the years December 31, 2012 and December 31, 2011:

(In US$ millions)	December 31,			December 31,
	2012			2011
The total balance of accumulated other comprehensive income is made up as follows:
Unrealized gain on marketable securities		206			1
Unrealized gain on foreign exchange		67			54
Actuarial gain/(loss) relating to pension		(30	)		(11	)
Unrealized gain/ (loss) on interest rate swaps in VIEs		(49	)		(49	)
Accumulated other comprehensive income		194			(5	)