diff --git a/qiskit_ibm_runtime/session.py b/qiskit_ibm_runtime/session.py
index 269d24381..c68bcc823 100644
--- a/qiskit_ibm_runtime/session.py
+++ b/qiskit_ibm_runtime/session.py
@@ -286,6 +286,8 @@ def details(self) -> Optional[Dict[str, Any]]:
             started_at: Timestamp of when the session was started.
             closed_at: Timestamp of when the session was closed.
             activated_at: Timestamp of when the session state was changed to active.
+            usage_time: The usage time, in seconds, of this Session or Batch.
+            Usage is defined as the time a quantum system is committed to complete a job.
         """
         if self._session_id and isinstance(self._service, QiskitRuntimeService):
             response = self._service._api_client.session_details(self._session_id)
@@ -303,6 +305,7 @@ def details(self) -> Optional[Dict[str, Any]]:
                     "started_at": response.get("started_at"),
                     "closed_at": response.get("closed_at"),
                     "activated_at": response.get("activated_at"),
+                    "usage_time": response.get("elapsed_time"),
                 }
         return None
 
diff --git a/release-notes/unreleased/1567.feat.rst b/release-notes/unreleased/1567.feat.rst
new file mode 100644
index 000000000..83553e36d
--- /dev/null
+++ b/release-notes/unreleased/1567.feat.rst
@@ -0,0 +1,3 @@
+Session `details() <https://docs.quantum.ibm.com/api/qiskit-ibm-runtime/qiskit_ibm_runtime.Session#details>`__ 
+now includes a new field, `usage_time`. Usage is defined as the time a quantum system 
+is committed to complete a job.
\ No newline at end of file