diff --git a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
index 6f73ae6b4cb..5ed495b8f21 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
@@ -275,8 +275,8 @@ public class PowerUsageAdvanced extends PowerUsageBase {
         if (usageData.usageList.size() <= 1) {
             CharSequence timeSequence = Utils.formatElapsedTime(getContext(),
                     usageData.totalUsageTimeMs, false);
-            usageData.summary = TextUtils.expandTemplate(getText(R.string.battery_used_for),
-                    timeSequence);
+            usageData.summary = usageData.usageType == UsageType.IDLE ? timeSequence
+                    : TextUtils.expandTemplate(getText(R.string.battery_used_for), timeSequence);
         } else {
             BatterySipper sipper = findBatterySipperWithMaxBatteryUsage(usageData.usageList);
             BatteryEntry batteryEntry = new BatteryEntry(getContext(), mHandler, mUserManager,
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageAdvancedTest.java b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageAdvancedTest.java
index 48eb02bd9bc..514da7924cf 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageAdvancedTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageAdvancedTest.java
@@ -188,6 +188,16 @@ public class PowerUsageAdvancedTest {
         assertThat(mPowerUsageData.summary.toString()).isEqualTo(expectedSummary);
     }
 
+    @Test
+    public void testUpdateUsageDataSummary_typeIdle_showUsageTime() {
+        mPowerUsageData.usageType = UsageType.IDLE;
+        mPowerUsageData.usageList.add(mNormalBatterySipper);
+
+        mPowerUsageAdvanced.updateUsageDataSummary(mPowerUsageData, TOTAL_POWER, DISCHARGE_AMOUNT);
+
+        assertThat(mPowerUsageData.summary.toString()).isEqualTo("0m");
+    }
+
     @Test
     public void testUpdateUsageDataSummary_moreThanOneApp_showMaxUsageApp() {
         mPowerUsageData.usageList.add(mNormalBatterySipper);