Assets held for sale - Narrative (Details)	12 Months Ended
Dec. 31, 2022 project
Assets and liabilities classified as held for sale \| Upstream
Disclosure of analysis of non-current assets held for sale [Line Items]
Number of projects	3

Disclosure of analysis of non-current assets held for sale [Line Items]

No definition available.

Name:	shel_DisclosureOfAnalysisOfNonCurrentAssetsHeldForSaleLineItems
Namespace Prefix:	shel_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration