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Other reserves - Summary of Other Reserves Attributable to Royal Dutch Shell Plc Shareholders (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Other comprehensive income/(loss) attributable to Shell plc shareholders |  | $ 10,675 | $ 5,041 | $ 7,792 | $ 15,716 | $ 14,540
Repurchases of shares |  |  |  |  | (4,931) | (7,038)
Total |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | 21,234 |  | 21,234 | 19,766
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | (800) | 6,159
Transfer from other comprehensive income |  |  |  |  | (36) | 18
Repurchases of shares | [1] |  |  |  | 12 | 17
Share-based compensation |  |  |  |  | (554) | (486)
Ending balance |  | 19,856 |  | 25,473 | 19,856 | 25,473
Merger reserve |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | 37,298 |  | 37,298 | 37,298
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | 0 | 0
Transfer from other comprehensive income |  |  |  |  | 0 | 0
Repurchases of shares |  |  |  |  | 0 | 0
Share-based compensation |  |  |  |  | 0 | 0
Ending balance |  | 37,298 |  | 37,298 | 37,298 | 37,298
Share premium reserve |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | 154 |  | 154 | 154
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | 0 | 0
Transfer from other comprehensive income |  |  |  |  | 0 | 0
Repurchases of shares |  |  |  |  | 0 | 0
Share-based compensation |  |  |  |  | 0 | 0
Ending balance |  | 154 |  | 154 | 154 | 154
Capital redemption reserve |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | 303 |  | 303 | 270
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | 0 | 0
Transfer from other comprehensive income |  |  |  |  | 0 | 0
Repurchases of shares |  |  |  |  | 12 | 17
Share-based compensation |  |  |  |  | 0 | 0
Ending balance |  | 316 |  | 287 | 316 | 287
Share plan reserve |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | 1,359 |  | 1,359 | 1,417
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | 0 | 0
Transfer from other comprehensive income |  |  |  |  | 0 | 0
Repurchases of shares |  |  |  |  | 0 | 0
Share-based compensation |  |  |  |  | (554) | (486)
Ending balance |  | 805 |  | 930 | 805 | 930
Accumulated other comprehensive income |  |  |  |  |  |
Disclosure Of Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |
Beginning balance |  |  | $ (17,880) |  | (17,880) | (19,373)
Other comprehensive income/(loss) attributable to Shell plc shareholders |  |  |  |  | (800) | 6,159
Transfer from other comprehensive income |  |  |  |  | (36) | 18
Repurchases of shares |  |  |  |  | 0 | 0
Share-based compensation |  |  |  |  | 0 | 0
Ending balance |  | $ (18,716) |  | $ (13,196) | $ (18,716) | $ (13,196)
[1] | The amount charged to retained earnings is based on prevailing exchange rates on payment date.

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