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Segment information (Tables)

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Schedule of segment results

The below section splits out total operating revenue, depreciation, amortization of intangibles, operating net loss, drilling units and capital expenditures by segment:

Total operating revenue

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
Harsh environment																		232						276
Floaters																		154						216
Jack-up rigs																		60						98
Other																		6						8
Total																		452						598

Depreciation

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
Harsh environment																		43						52
Floaters																		19						105
Jack-up rigs																		21						25
Total																		83						182

Loss on impairment of long-lived assets

(In $ millions)															Six months ended June 30, 2021						Six months ended June 30, 2020
Harsh environment															152						160
Floaters															—						1,070
Jack-ups															—						—
Total															152						1,230

Operating loss - Net loss

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
Harsh environment																		(177)						(147)
Floaters																		(27)						(1,184)
Jack-ups																		(1)						10
Other																		(47)						(51)
Operating loss																		(252)						(1,372)
Unallocated items:
Total financial items and other																		(342)						(374)
Income taxes																		(11)						(2)
Net loss																		(605)						(1,748)

Drilling units - Total assets

(In $ millions)						As at June 30, 2021						As at December 31, 2020
Harsh environment						858						1,032
Floaters						507						528
Jack-ups						562						560
Total drilling units						1,927						2,120
Unallocated items:
Investments in associated companies						248						248
Cash and restricted cash						644						723
Other assets						838						870
Total assets						3,657						3,961

Drilling units - Capital expenditures

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
Harsh environment																		17						11
Floaters																		12						58
Jack-ups																		10						7
Other																		1						9
Total																		40						85

Schedule of revenues and fixed assets by geographic area

Revenues are attributed to geographical segments based on the country of operations for drilling activities, i.e. the country where the revenues are generated. The following information presents our revenues and fixed assets by geographic area:

Revenues

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
Norway																		234						291
Brazil															54						19
Angola																		53						98
United States															46						59
Saudi Arabia															42						62
Nigeria																		—						5
Others (1)																		23						64
Total																		452						598

(1)     Other countries represent countries in which we operate that individually had revenues representing less than 10% of total revenues earned for any of the periods presented.

Fixed assets – drilling units (1)

(In $ millions)						As at June 30, 2021						As at December 31, 2020
Norway						858						1,044
Saudi Arabia						230						234
Brazil						161						79
Qatar						150						151
Malaysia						130						185
United States						87						87
Other (2)						311						340
Total						1,927						2,120

(1)     The countries in this table represent the location of the drilling unit at the end of the reporting period and are not necessarily indicative of the geographic distribution of the revenues or operating profits generated by the assets during the period. In most cases these locations are different to the country in which the Company that owns the drilling unit is registered.

(2)     "Other" represents countries in which we operate that individually had fixed assets representing less than 5% of total fixed assets for any of the periods presented.

Schedule of customer with contract revenues by major customers

We had the following customers with total revenues greater than 10% in any of the periods presented:

(In $ millions)																		Six months ended June 30, 2021						Six months ended June 30, 2020
ConocoPhillips																		19		%				13		%
Lundin																		12		%				—		%
Equinor																		13		%				19		%
Sonagol																		10		%				9		%
Saudi Aramco																		9		%				10		%
Northern Ocean																		5		%				14		%

X

- Definition

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

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