Goodwill and other intangible assets

12 Months Ended

Dec. 31, 2012

Goodwill and other intangible assets [Abstract]

Note 19 – Goodwill and other intangible assets

There have been no business acquisitions for the year ended December 31, 2012.

In January 2011, our subsidiary Archer (formerly named Seawell) acquired Universal Wireline for $26 million on a debt and cash free basis, however Universal was deconsolidated together with Archer in February 2011. There were no other acquisitions in 2011.

As described in Note 2 "Accounting policies", the Company tests the value of goodwill at the end of each financial year and if the book value exceeds the fair value an impairment loss is taken. In the years ended December 31, 2012, 2011 and 2010 no impairment losses were recognized.

Goodwill:

(In US$ millions)	December 31, 2012		December 31, 2011
Net book balance at January 1		1,320		1,676
Goodwill acquired during the year		-		-
Impairment losses		-		-
Currency adjustments		-		15
Deconsolidation Archer		-		(371)
Net book balance of December 31		1,320		1,320

Other intangible assets:

Other intangible assets relate to customer relationships, technology and trademarks within the operating segment Well Services.

(In US$ millions)	December 31, 2012		December 31, 2011
Net book balance at January 1		-		57
Intangible assets acquired during the year		-		-
Depreciation		-		-
Deconsolidation Archer		-		(57)
Net book balance of December 31		-		-

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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