diff --git a/docs/reference-guides/core-blocks.md b/docs/reference-guides/core-blocks.md
index 10ceb797e28c0..db5dcb6289aff 100644
--- a/docs/reference-guides/core-blocks.md
+++ b/docs/reference-guides/core-blocks.md
@@ -255,7 +255,7 @@ Hide and show additional content. ([Source](https://github.com/WordPress/gutenbe
 -	**Name:** core/details
 -	**Category:** text
 -	**Supports:** align (full, wide), anchor, color (background, gradients, link, text), interactivity (clientNavigation), layout (~~allowEditing~~), spacing (blockGap, margin, padding), typography (fontSize, lineHeight), ~~html~~
--	**Attributes:** allowedBlocks, name, showContent, summary
+-	**Attributes:** allowedBlocks, name, placeholder, showContent, summary
 
 ## Embed
 
diff --git a/packages/block-library/src/details/block.json b/packages/block-library/src/details/block.json
index e4fadc4a064f9..19d5c554cd26d 100644
--- a/packages/block-library/src/details/block.json
+++ b/packages/block-library/src/details/block.json
@@ -25,6 +25,9 @@
 		},
 		"allowedBlocks": {
 			"type": "array"
+		},
+		"placeholder": {
+			"type": "string"
 		}
 	},
 	"supports": {
diff --git a/packages/block-library/src/details/edit.js b/packages/block-library/src/details/edit.js
index b7e8f815e21c0..89221c96bb8cc 100644
--- a/packages/block-library/src/details/edit.js
+++ b/packages/block-library/src/details/edit.js
@@ -31,7 +31,8 @@ const TEMPLATE = [
 ];
 
 function DetailsEdit( { attributes, setAttributes } ) {
-	const { name, showContent, summary, allowedBlocks } = attributes;
+	const { name, showContent, summary, allowedBlocks, placeholder } =
+		attributes;
 	const blockProps = useBlockProps();
 	const innerBlocksProps = useInnerBlocksProps( blockProps, {
 		template: TEMPLATE,
@@ -100,7 +101,7 @@ function DetailsEdit( { attributes, setAttributes } ) {
 					<RichText
 						identifier="summary"
 						aria-label={ __( 'Write summary' ) }
-						placeholder={ __( 'Write summary…' ) }
+						placeholder={ placeholder || __( 'Write summary…' ) }
 						allowedFormats={ [] }
 						withoutInteractiveFormatting
 						value={ summary }