XML 38 R27.htm IDEA: XBRL DOCUMENT v3.25.3

Equity method investments (Tables)

9 Months Ended

Sep. 30, 2025

Equity Method Investments and Joint Ventures [Abstract]

Schedule of investment in associated companies

As of September 30, 2025 and December 31, 2024, the carrying value of our equity method investment was as follows:

(In $ millions)						September 30, 2025						December 31, 2024
Sonadrill						71						68
Total equity method investment						71						68

X

- Definition

Tabular disclosure of the share of recorded equity in the statutory accounts of the entity's equity method investees.

+ References

No definition available.

+ Details

Name:	sdrl_RecordedEquityInStatutoryAccountsOfEquityMethodInvesteesTableTextBlock
Namespace Prefix:	sdrl_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration