diff --git a/extensions/css-language-features/client/src/cssMain.ts b/extensions/css-language-features/client/src/cssMain.ts
index bc8bbdc9ff7..8822571d076 100644
--- a/extensions/css-language-features/client/src/cssMain.ts
+++ b/extensions/css-language-features/client/src/cssMain.ts
@@ -60,12 +60,17 @@ export function activate(context: ExtensionContext) {
 						(Array.isArray(r) ? r : r.items).forEach(updateRanges);
 
 						if (!Array.isArray(r)) {
-							r.isDetailsResolved = true;
 							r.items.forEach(i => {
 								if (i.kind === CompletionItemKind.Color) {
-									i.detail = i.documentation?.toString();
+									i.label = {
+										label: i.label as string,
+										details: i.documentation?.toString()
+									};
 								} else {
-									i.detail = i.label;
+									i.label = {
+										label: i.label as string,
+										details: i.label as string
+									};
 								}
 							});
 						}
diff --git a/src/vs/editor/common/modes.ts b/src/vs/editor/common/modes.ts
index 78495217dc3..f22125a6acb 100644
--- a/src/vs/editor/common/modes.ts
+++ b/src/vs/editor/common/modes.ts
@@ -369,6 +369,28 @@ export let completionKindFromString: {
 	};
 })();
 
+export interface CompletionItemLabel {
+
+	/**
+	 * The label of this completion item. By default
+	 * this is also the text that is inserted when selecting
+	 * this completion.
+	 */
+	label: string;
+
+	/**
+	 * A description of the completion item which is rendered
+	 * less prominent.
+	 */
+	// description?: string;
+
+	/**
+	 * Details of the completion item that is rendered less
+	 * prominent to the right.
+	 */
+	details?: string;
+}
+
 export const enum CompletionItemTag {
 	Deprecated = 1
 }
@@ -396,7 +418,7 @@ export interface CompletionItem {
 	 * this is also the text that is inserted when selecting
 	 * this completion.
 	 */
-	label: string;
+	label: string | CompletionItemLabel;
 	/**
 	 * The kind of this completion item. Based on the kind
 	 * an icon is chosen by the editor.
@@ -481,7 +503,6 @@ export interface CompletionItem {
 export interface CompletionList {
 	suggestions: CompletionItem[];
 	incomplete?: boolean;
-	isDetailsResolved?: boolean;
 	dispose?(): void;
 }
 
diff --git a/src/vs/editor/contrib/suggest/completionModel.ts b/src/vs/editor/contrib/suggest/completionModel.ts
index c1349fa7935..5382be986e9 100644
--- a/src/vs/editor/contrib/suggest/completionModel.ts
+++ b/src/vs/editor/contrib/suggest/completionModel.ts
@@ -192,6 +192,7 @@ export class CompletionModel {
 					}
 				}
 
+				const label = typeof item.completion.label === 'string' ? item.completion.label : item.completion.label.label;
 				if (wordPos >= wordLen) {
 					// the wordPos at which scoring starts is the whole word
 					// and therefore the same rules as not having a word apply
@@ -206,19 +207,19 @@ export class CompletionModel {
 					if (!match) {
 						continue; // NO match
 					}
-					if (compareIgnoreCase(item.completion.filterText, item.completion.label) === 0) {
+					if (compareIgnoreCase(item.completion.filterText, label) === 0) {
 						// filterText and label are actually the same -> use good highlights
 						item.score = match;
 					} else {
 						// re-run the scorer on the label in the hope of a result BUT use the rank
 						// of the filterText-match
-						item.score = anyScore(word, wordLow, wordPos, item.completion.label, item.labelLow, 0);
+						item.score = anyScore(word, wordLow, wordPos, label, item.labelLow, 0);
 						item.score[0] = match[0]; // use score from filterText
 					}
 
 				} else {
 					// by default match `word` against the `label`
-					let match = scoreFn(word, wordLow, wordPos, item.completion.label, item.labelLow, 0, false);
+					let match = scoreFn(word, wordLow, wordPos, label, item.labelLow, 0, false);
 					if (!match) {
 						continue; // NO match
 					}
diff --git a/src/vs/editor/contrib/suggest/suggest.ts b/src/vs/editor/contrib/suggest/suggest.ts
index f408f88ec12..61813788b10 100644
--- a/src/vs/editor/contrib/suggest/suggest.ts
+++ b/src/vs/editor/contrib/suggest/suggest.ts
@@ -36,6 +36,9 @@ export class CompletionItem {
 	readonly editInsertEnd: IPosition;
 	readonly editReplaceEnd: IPosition;
 
+	//
+	readonly textLabel: string;
+
 	// perf
 	readonly labelLow: string;
 	readonly sortTextLow?: string;
@@ -47,9 +50,6 @@ export class CompletionItem {
 	idx?: number;
 	word?: string;
 
-	// all details resolved, we can show them all
-	readonly isDetailsResolved: boolean;
-
 	constructor(
 		readonly position: IPosition,
 		readonly completion: modes.CompletionItem,
@@ -57,8 +57,13 @@ export class CompletionItem {
 		readonly provider: modes.CompletionItemProvider,
 		model: ITextModel
 	) {
+		this.textLabel = typeof completion.label === 'string'
+			? completion.label
+			: completion.label.label;
+
 		// ensure lower-variants (perf)
-		this.labelLow = completion.label.toLowerCase();
+		this.labelLow = this.textLabel.toLowerCase();
+
 		this.sortTextLow = completion.sortText && completion.sortText.toLowerCase();
 		this.filterTextLow = completion.filterText && completion.filterText.toLowerCase();
 
@@ -73,8 +78,6 @@ export class CompletionItem {
 			this.editReplaceEnd = new Position(completion.range.replace.endLineNumber, completion.range.replace.endColumn);
 		}
 
-		this.isDetailsResolved = container.isDetailsResolved || typeof provider.resolveCompletionItem === 'undefined';
-
 		// create the suggestion resolver
 		const { resolveCompletionItem } = provider;
 		if (typeof resolveCompletionItem !== 'function') {
@@ -188,7 +191,7 @@ export function provideSuggestionItems(
 							}
 							// fill in default sortText when missing
 							if (!suggestion.sortText) {
-								suggestion.sortText = suggestion.label;
+								suggestion.sortText = typeof suggestion.label === 'string' ? suggestion.label : suggestion.label.label;
 							}
 
 							allSuggestions.push(new CompletionItem(position, suggestion, container, provider, model));
diff --git a/src/vs/editor/contrib/suggest/suggestController.ts b/src/vs/editor/contrib/suggest/suggestController.ts
index a4330d1d438..b0fa140844a 100644
--- a/src/vs/editor/contrib/suggest/suggestController.ts
+++ b/src/vs/editor/contrib/suggest/suggestController.ts
@@ -343,8 +343,9 @@ export class SuggestController implements IEditorContribution {
 	}
 
 	private _alertCompletionItem({ completion: suggestion }: CompletionItem): void {
+		const textLabel = typeof suggestion.label === 'string' ? suggestion.label : suggestion.label.label;
 		if (isNonEmptyArray(suggestion.additionalTextEdits)) {
-			let msg = nls.localize('arai.alert.snippet', "Accepting '{0}' made {1} additional edits", suggestion.label, suggestion.additionalTextEdits.length);
+			let msg = nls.localize('arai.alert.snippet', "Accepting '{0}' made {1} additional edits", textLabel, suggestion.additionalTextEdits.length);
 			alert(msg);
 		}
 	}
diff --git a/src/vs/editor/contrib/suggest/suggestWidget.ts b/src/vs/editor/contrib/suggest/suggestWidget.ts
index 24bb13a3043..90f1a7ba65d 100644
--- a/src/vs/editor/contrib/suggest/suggestWidget.ts
+++ b/src/vs/editor/contrib/suggest/suggestWidget.ts
@@ -67,8 +67,12 @@ export const editorSuggestWidgetHighlightForeground = registerColor('editorSugge
 
 const colorRegExp = /^(#([\da-f]{3}){1,2}|(rgb|hsl)a\(\s*(\d{1,3}%?\s*,\s*){3}(1|0?\.\d+)\)|(rgb|hsl)\(\s*\d{1,3}%?(\s*,\s*\d{1,3}%?){2}\s*\))$/i;
 function extractColor(item: CompletionItem, out: string[]): boolean {
-	if (item.completion.label.match(colorRegExp)) {
-		out[0] = item.completion.label;
+	const label = typeof item.completion.label === 'string'
+		? item.completion.label
+		: item.completion.label.label;
+
+	if (label.match(colorRegExp)) {
+		out[0] = label;
 		return true;
 	}
 	if (typeof item.completion.documentation === 'string' && item.completion.documentation.match(colorRegExp)) {
@@ -163,6 +167,7 @@ class Renderer implements IListRenderer<CompletionItem, ISuggestionTemplateData>
 	renderElement(element: CompletionItem, _index: number, templateData: ISuggestionTemplateData): void {
 		const data = <ISuggestionTemplateData>templateData;
 		const suggestion = (<CompletionItem>element).completion;
+		const textLabel = typeof suggestion.label === 'string' ? suggestion.label : suggestion.label.label;
 
 		data.icon.className = 'icon ' + completionKindToCssClass(suggestion.kind);
 		data.colorspan.style.backgroundColor = '';
@@ -183,7 +188,7 @@ class Renderer implements IListRenderer<CompletionItem, ISuggestionTemplateData>
 			// special logic for 'file' completion items
 			data.icon.className = 'icon hide';
 			data.iconContainer.className = 'icon hide';
-			const labelClasses = getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: suggestion.label }), FileKind.FILE);
+			const labelClasses = getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: textLabel }), FileKind.FILE);
 			const detailClasses = getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: suggestion.detail }), FileKind.FILE);
 			labelOptions.extraClasses = labelClasses.length > detailClasses.length ? labelClasses : detailClasses;
 
@@ -192,7 +197,7 @@ class Renderer implements IListRenderer<CompletionItem, ISuggestionTemplateData>
 			data.icon.className = 'icon hide';
 			data.iconContainer.className = 'icon hide';
 			labelOptions.extraClasses = flatten([
-				getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: suggestion.label }), FileKind.FOLDER),
+				getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: textLabel }), FileKind.FOLDER),
 				getIconClasses(this._modelService, this._modeService, URI.from({ scheme: 'fake', path: suggestion.detail }), FileKind.FOLDER)
 			]);
 		} else {
@@ -207,8 +212,12 @@ class Renderer implements IListRenderer<CompletionItem, ISuggestionTemplateData>
 			labelOptions.matches = [];
 		}
 
-		data.iconLabel.setLabel(suggestion.label, undefined, labelOptions);
-		data.typeLabel.textContent = (suggestion.detail || '').replace(/\n.*$/m, '');
+		data.iconLabel.setLabel(textLabel, undefined, labelOptions);
+		if (typeof suggestion.label === 'string') {
+			data.typeLabel.textContent = (suggestion.detail || '').replace(/\n.*$/m, '');
+		} else {
+			data.typeLabel.textContent = (suggestion.label.details || '').replace(/\n.*$/m, '');
+		}
 
 		if (canExpandCompletionItem(element)) {
 			show(data.readMore);
@@ -621,10 +630,11 @@ export class SuggestWidget implements IContentWidget, IListVirtualDelegate<Compl
 	}
 
 	private _getSuggestionAriaAlertLabel(item: CompletionItem): string {
+		const textLabel = typeof item.completion.label === 'string' ? item.completion.label : item.completion.label.label;
 		if (this.expandDocsSettingFromStorage()) {
-			return nls.localize('ariaCurrenttSuggestionReadDetails', "Item {0}, docs: {1}", item.completion.label, this.details.getAriaLabel());
+			return nls.localize('ariaCurrenttSuggestionReadDetails', "Item {0}, docs: {1}", textLabel, this.details.getAriaLabel());
 		} else {
-			return item.completion.label;
+			return textLabel;
 		}
 	}
 
diff --git a/src/vs/editor/contrib/suggest/wordDistance.ts b/src/vs/editor/contrib/suggest/wordDistance.ts
index fb1901260d2..c4afae7e787 100644
--- a/src/vs/editor/contrib/suggest/wordDistance.ts
+++ b/src/vs/editor/contrib/suggest/wordDistance.ts
@@ -48,7 +48,10 @@ export abstract class WordDistance {
 				if (suggestion.kind === CompletionItemKind.Keyword) {
 					return 2 << 20;
 				}
-				let word = suggestion.label;
+				let word = typeof suggestion.label === 'string'
+					? suggestion.label
+					: suggestion.label.label;
+
 				let wordLines = wordRanges[word];
 				if (isFalsyOrEmpty(wordLines)) {
 					return 2 << 20;
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index ba478dbc33a..70f108e9dd1 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -4744,6 +4744,24 @@ declare namespace monaco.languages {
 		Snippet = 25
 	}
 
+	export interface CompletionItemLabel {
+		/**
+		 * The label of this completion item. By default
+		 * this is also the text that is inserted when selecting
+		 * this completion.
+		 */
+		label: string;
+		/**
+		 * A description of the completion item which is rendered
+		 * less prominent.
+		 */
+		/**
+		 * Details of the completion item that is rendered less
+		 * prominent to the right.
+		 */
+		details?: string;
+	}
+
 	export enum CompletionItemTag {
 		Deprecated = 1
 	}
@@ -4770,7 +4788,7 @@ declare namespace monaco.languages {
 		 * this is also the text that is inserted when selecting
 		 * this completion.
 		 */
-		label: string;
+		label: string | CompletionItemLabel;
 		/**
 		 * The kind of this completion item. Based on the kind
 		 * an icon is chosen by the editor.
@@ -4853,7 +4871,6 @@ declare namespace monaco.languages {
 	export interface CompletionList {
 		suggestions: CompletionItem[];
 		incomplete?: boolean;
-		isDetailsResolved?: boolean;
 		dispose?(): void;
 	}
 
diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index eabfc93a66b..cf2dd5e1c3c 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -3360,7 +3360,7 @@ declare module 'vscode' {
 		 * this is also the text that is inserted when selecting
 		 * this completion.
 		 */
-		label: string;
+		label: string | CompletionItemLabel;
 
 		/**
 		 * The kind of this completion item. Based on the kind
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 27a17629b13..fa833794676 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -1509,8 +1509,26 @@ declare module 'vscode' {
 
 	//#region https://github.com/microsoft/vscode/issues/39441
 
-	export interface CompletionList {
-		isDetailsResolved?: boolean;
+	export interface CompletionItemLabel {
+
+		/**
+		 * The label of this completion item. By default
+		 * this is also the text that is inserted when selecting
+		 * this completion.
+		 */
+		label: string;
+
+		/**
+		 * A description of the completion item which is rendered
+		 * less prominent.
+		 */
+		// description?: string;
+
+		/**
+		 * Details of the completion item that is rendered less
+		 * prominent to the right.
+		 */
+		details?: string;
 	}
 
 	//#endregion
diff --git a/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts b/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
index da77e770f4e..aec466e50aa 100644
--- a/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
+++ b/src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts
@@ -334,6 +334,10 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 	// --- suggest
 
 	private static _inflateSuggestDto(defaultRange: IRange | { insert: IRange, replace: IRange }, data: ISuggestDataDto): modes.CompletionItem {
+		const label = data[ISuggestDataDtoField.label];
+		const labelText = typeof label === 'string'
+			? label
+			: label.label;
 
 		return {
 			label: data[ISuggestDataDtoField.label],
@@ -344,7 +348,7 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 			sortText: data[ISuggestDataDtoField.sortText],
 			filterText: data[ISuggestDataDtoField.filterText],
 			preselect: data[ISuggestDataDtoField.preselect],
-			insertText: typeof data.h === 'undefined' ? data[ISuggestDataDtoField.label] : data.h,
+			insertText: typeof data.h === 'undefined' ? labelText : data.h,
 			range: data[ISuggestDataDtoField.range] || defaultRange,
 			insertTextRules: data[ISuggestDataDtoField.insertTextRules],
 			commitCharacters: data[ISuggestDataDtoField.commitCharacters],
@@ -367,7 +371,6 @@ export class MainThreadLanguageFeatures implements MainThreadLanguageFeaturesSha
 					return {
 						suggestions: result.b.map(d => MainThreadLanguageFeatures._inflateSuggestDto(result.a, d)),
 						incomplete: result.c,
-						isDetailsResolved: result.d,
 						dispose: () => typeof result.x === 'number' && this._proxy.$releaseCompletionItems(handle, result.x)
 					};
 				});
diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index 227a885f876..5b65014b083 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -989,7 +989,7 @@ export const enum ISuggestDataDtoField {
 }
 
 export interface ISuggestDataDto {
-	[ISuggestDataDtoField.label]: string;
+	[ISuggestDataDtoField.label]: string | modes.CompletionItemLabel;
 	[ISuggestDataDtoField.kind]: modes.CompletionItemKind;
 	[ISuggestDataDtoField.detail]?: string;
 	[ISuggestDataDtoField.documentation]?: string | IMarkdownString;
@@ -1012,7 +1012,6 @@ export interface ISuggestResultDto {
 	a: { insert: IRange, replace: IRange; };
 	b: ISuggestDataDto[];
 	c?: boolean;
-	d?: boolean;
 }
 
 export interface ISignatureHelpDto {
diff --git a/src/vs/workbench/api/common/extHostLanguageFeatures.ts b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
index 737ed4be714..19fa91f1de3 100644
--- a/src/vs/workbench/api/common/extHostLanguageFeatures.ts
+++ b/src/vs/workbench/api/common/extHostLanguageFeatures.ts
@@ -787,8 +787,7 @@ class SuggestAdapter {
 				x: pid,
 				b: [],
 				a: { replace: typeConvert.Range.from(replaceRange), insert: typeConvert.Range.from(insertRange) },
-				c: list.isIncomplete || undefined,
-				d: list.isDetailsResolved || undefined
+				c: list.isIncomplete || undefined
 			};
 
 			for (let i = 0; i < list.items.length; i++) {
@@ -858,7 +857,11 @@ class SuggestAdapter {
 	}
 
 	private _convertCompletionItem(item: vscode.CompletionItem, position: vscode.Position, id: extHostProtocol.ChainedCacheId): extHostProtocol.ISuggestDataDto | undefined {
-		if (typeof item.label !== 'string' || item.label.length === 0) {
+		const label = typeof item.label === 'string'
+			? item.label
+			: item.label.label;
+
+		if (typeof label !== 'string' || label.length === 0) {
 			this._logService.warn('INVALID text edit -> must have at least a label');
 			return undefined;
 		}
diff --git a/src/vs/workbench/api/common/extHostTypes.ts b/src/vs/workbench/api/common/extHostTypes.ts
index 5239da9499b..19863726fac 100644
--- a/src/vs/workbench/api/common/extHostTypes.ts
+++ b/src/vs/workbench/api/common/extHostTypes.ts
@@ -1351,10 +1351,17 @@ export enum CompletionItemTag {
 	Deprecated = 1,
 }
 
+export interface CompletionItemLabel {
+	label: string;
+	// description?: string;
+	details?: string;
+}
+
+
 @es5ClassCompat
 export class CompletionItem implements vscode.CompletionItem {
 
-	label: string;
+	label: string | CompletionItemLabel;
 	kind?: CompletionItemKind;
 	tags?: CompletionItemTag[];
 	detail?: string;
@@ -1371,7 +1378,7 @@ export class CompletionItem implements vscode.CompletionItem {
 	additionalTextEdits?: TextEdit[];
 	command?: vscode.Command;
 
-	constructor(label: string, kind?: CompletionItemKind) {
+	constructor(label: string | CompletionItemLabel, kind?: CompletionItemKind) {
 		this.label = label;
 		this.kind = kind;
 	}
@@ -1395,7 +1402,6 @@ export class CompletionItem implements vscode.CompletionItem {
 export class CompletionList {
 
 	isIncomplete?: boolean;
-	isDetailsResolved?: boolean;
 	items: vscode.CompletionItem[];
 
 	constructor(items: vscode.CompletionItem[] = [], isIncomplete: boolean = false) {
diff --git a/src/vs/workbench/contrib/snippets/browser/snippetCompletionProvider.ts b/src/vs/workbench/contrib/snippets/browser/snippetCompletionProvider.ts
index e30853b4c2c..96d9f026104 100644
--- a/src/vs/workbench/contrib/snippets/browser/snippetCompletionProvider.ts
+++ b/src/vs/workbench/contrib/snippets/browser/snippetCompletionProvider.ts
@@ -146,7 +146,7 @@ export class SnippetCompletionProvider implements CompletionItemProvider {
 					i = to;
 				}
 			}
-			return { suggestions, isDetailsResolved: true };
+			return { suggestions };
 		});
 	}