diff --git a/docs/features/streaming-events.md b/docs/features/streaming-events.md
index d5201a1685..10f111d9f9 100644
--- a/docs/features/streaming-events.md
+++ b/docs/features/streaming-events.md
@@ -548,7 +548,7 @@ Ephemeral. The agent has finished all processing and is ready for the next messa
 
 | Data Field | Type | Required | Description |
 |------------|------|----------|-------------|
-| `backgroundTasks` | `BackgroundTasks` | | Background agents/shells still running when the agent became idle |
+| `aborted` | `boolean` | | True when the preceding turn was cancelled via abort signal |
 
 ### `session.error`
 
@@ -958,7 +958,7 @@ This table lists key `data` payload fields. Common envelope fields are documente
 | `tool.execution_partial_result` | ✅ | Tool | `toolCallId`, `partialOutput` |
 | `tool.execution_progress` | ✅ | Tool | `toolCallId`, `progressMessage` |
 | `tool.execution_complete` | | Tool | `toolCallId`, `success`, `result?`, `error?` |
-| `session.idle` | ✅ | Session | `backgroundTasks?` |
+| `session.idle` | ✅ | Session | `aborted?` |
 | `session.error` | | Session | `errorType`, `message`, `statusCode?` |
 | `session.compaction_start` | | Session | *(empty)* |
 | `session.compaction_complete` | | Session | `success`, `preCompactionTokens?`, `summaryContent?` |
diff --git a/nodejs/docs/agent-author.md b/nodejs/docs/agent-author.md
index 9071814425..6394603a23 100644
--- a/nodejs/docs/agent-author.md
+++ b/nodejs/docs/agent-author.md
@@ -270,7 +270,7 @@ const unsub = session.on("tool.execution_complete", (event) => {
 | `tool.execution_start`    | `toolCallId`, `toolName`, `arguments`                  |
 | `tool.execution_complete` | `toolCallId`, `toolName`, `success`, `result`, `error` |
 | `user.message`            | `content`, `attachments`, `source`                     |
-| `session.idle`            | `backgroundTasks`                                      |
+| `session.idle`            | `aborted`                                              |
 | `session.error`           | `errorType`, `message`, `stack`                        |
 | `permission.requested`    | `requestId`, `permissionRequest.kind`                  |
 | `session.shutdown`        | `shutdownType`, `totalPremiumRequests`                 |
diff --git a/nodejs/docs/examples.md b/nodejs/docs/examples.md
index 1bac87982e..ad1f1b13ba 100644
--- a/nodejs/docs/examples.md
+++ b/nodejs/docs/examples.md
@@ -419,7 +419,7 @@ session.on("assistant.message", (event) => {
 | `tool.execution_start`      | A tool is about to run                           | `toolCallId`, `toolName`, `arguments`                  |
 | `tool.execution_complete`   | A tool finished running                          | `toolCallId`, `toolName`, `success`, `result`, `error` |
 | `user.message`              | User sent a message                              | `content`, `attachments`, `source`                     |
-| `session.idle`              | Session finished processing a turn               | `backgroundTasks`                                      |
+| `session.idle`              | Session finished processing a turn               | `aborted`                                              |
 | `session.error`             | An error occurred                                | `errorType`, `message`, `stack`                        |
 | `permission.requested`      | Agent needs permission (shell, file write, etc.) | `requestId`, `permissionRequest.kind`                  |
 | `session.shutdown`          | Session is ending                                | `shutdownType`, `totalPremiumRequests`, `codeChanges`  |