diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/ConcurrentKafkaListenerContainerFactoryConfigurer.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/ConcurrentKafkaListenerContainerFactoryConfigurer.java
index 078beb8b2ba..397354c1b49 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/ConcurrentKafkaListenerContainerFactoryConfigurer.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/ConcurrentKafkaListenerContainerFactoryConfigurer.java
@@ -96,15 +96,17 @@ public class ConcurrentKafkaListenerContainerFactoryConfigurer {
 		PropertyMapper map = PropertyMapper.get();
 		Listener properties = this.properties.getListener();
 		map.from(properties::getAckMode).whenNonNull().to(container::setAckMode);
+		map.from(properties::getClientId).whenNonNull().to(container::setClientId);
 		map.from(properties::getAckCount).whenNonNull().to(container::setAckCount);
 		map.from(properties::getAckTime).whenNonNull().as(Duration::toMillis)
 				.to(container::setAckTime);
 		map.from(properties::getPollTimeout).whenNonNull().as(Duration::toMillis)
 				.to(container::setPollTimeout);
-		map.from(properties::getClientId).whenNonNull().to(container::setClientId);
-		map.from(properties::getIdleEventInterval).whenNonNull().to(container::setIdleEventInterval);
-		map.from(properties::getMonitorInterval).whenNonNull().to(container::setMonitorInterval);
 		map.from(properties::getNoPollThreshold).whenNonNull().to(container::setNoPollThreshold);
+		map.from(properties::getIdleEventInterval).whenNonNull().as(Duration::toMillis)
+				.to(container::setIdleEventInterval);
+		map.from(properties::getMonitorInterval).whenNonNull().as(Duration::getSeconds)
+				.as(Number::intValue).to(container::setMonitorInterval);
 		map.from(properties::getLogContainerConfig).whenNonNull().to(container::setLogContainerConfig);
 	}
 
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaProperties.java b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaProperties.java
index 54466b6f9dc..74524ba3018 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaProperties.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/kafka/KafkaProperties.java
@@ -18,6 +18,7 @@ package org.springframework.boot.autoconfigure.kafka;
 
 import java.io.IOException;
 import java.time.Duration;
+import java.time.temporal.ChronoUnit;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
@@ -32,6 +33,7 @@ import org.apache.kafka.common.serialization.StringDeserializer;
 import org.apache.kafka.common.serialization.StringSerializer;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.bind.convert.DefaultDurationUnit;
 import org.springframework.core.io.Resource;
 import org.springframework.kafka.listener.AbstractMessageListenerContainer.AckMode;
 import org.springframework.kafka.security.jaas.KafkaJaasLoginModuleInitializer;
@@ -797,6 +799,11 @@ public class KafkaProperties {
 		 */
 		private AckMode ackMode;
 
+		/**
+		 * Prefix for the listener's consumer client.id property.
+		 */
+		private String clientId;
+
 		/**
 		 * Number of threads to run in the listener containers.
 		 */
@@ -807,6 +814,11 @@ public class KafkaProperties {
 		 */
 		private Duration pollTimeout;
 
+		/**
+		 * Multiplier applied to "pollTimeout" to determine if a consumer is non-responsive.
+		 */
+		private Float noPollThreshold;
+
 		/**
 		 * Number of records between offset commits when ackMode is "COUNT" or
 		 * "COUNT_TIME".
@@ -819,27 +831,19 @@ public class KafkaProperties {
 		private Duration ackTime;
 
 		/**
-		 * Prefix for the listener's consumer client.id property.
+		 * Time between publishing idle consumer events (no data received).
 		 */
-		private String clientId;
+		private Duration idleEventInterval;
 
 		/**
-		 * Interval (ms) between publishing idle consumer events (no data received).
+		 * Time between checks for non-responsive consumers. If a duration suffix is not
+		 * specified, seconds will be used.
 		 */
-		private Long idleEventInterval;
+		@DefaultDurationUnit(ChronoUnit.SECONDS)
+		private Duration monitorInterval;
 
 		/**
-		 * Interval (seconds) between checks for non-responsive consumers.
-		 */
-		private Integer monitorInterval;
-
-		/**
-		 * Multiplier applied to pollTimeout to determine if a consumer is non-responsive.
-		 */
-		private Float noPollThreshold;
-
-		/**
-		 * When true, log the container configuration during initialization (INFO level).
+		 * Whether to log the container configuration during initialization (INFO level).
 		 */
 		private Boolean logContainerConfig;
 
@@ -859,6 +863,14 @@ public class KafkaProperties {
 			this.ackMode = ackMode;
 		}
 
+		public String getClientId() {
+			return this.clientId;
+		}
+
+		public void setClientId(String clientId) {
+			this.clientId = clientId;
+		}
+
 		public Integer getConcurrency() {
 			return this.concurrency;
 		}
@@ -875,6 +887,14 @@ public class KafkaProperties {
 			this.pollTimeout = pollTimeout;
 		}
 
+		public Float getNoPollThreshold() {
+			return this.noPollThreshold;
+		}
+
+		public void setNoPollThreshold(Float noPollThreshold) {
+			this.noPollThreshold = noPollThreshold;
+		}
+
 		public Integer getAckCount() {
 			return this.ackCount;
 		}
@@ -891,38 +911,22 @@ public class KafkaProperties {
 			this.ackTime = ackTime;
 		}
 
-		public String getClientId() {
-			return this.clientId;
-		}
-
-		public void setClientId(String clientId) {
-			this.clientId = clientId;
-		}
-
-		public Long getIdleEventInterval() {
+		public Duration getIdleEventInterval() {
 			return this.idleEventInterval;
 		}
 
-		public void setIdleEventInterval(Long idleEventInterval) {
+		public void setIdleEventInterval(Duration idleEventInterval) {
 			this.idleEventInterval = idleEventInterval;
 		}
 
-		public Integer getMonitorInterval() {
+		public Duration getMonitorInterval() {
 			return this.monitorInterval;
 		}
 
-		public void setMonitorInterval(Integer monitorInterval) {
+		public void setMonitorInterval(Duration monitorInterval) {
 			this.monitorInterval = monitorInterval;
 		}
 
-		public Float getNoPollThreshold() {
-			return this.noPollThreshold;
-		}
-
-		public void setNoPollThreshold(Float noPollThreshold) {
-			this.noPollThreshold = noPollThreshold;
-		}
-
 		public Boolean getLogContainerConfig() {
 			return this.logContainerConfig;
 		}
diff --git a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kafka/KafkaAutoConfigurationTests.java b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kafka/KafkaAutoConfigurationTests.java
index c013be10eb5..802322c68e8 100644
--- a/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kafka/KafkaAutoConfigurationTests.java
+++ b/spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/kafka/KafkaAutoConfigurationTests.java
@@ -254,15 +254,15 @@ public class KafkaAutoConfigurationTests {
 		this.contextRunner.withUserConfiguration(TestConfiguration.class)
 				.withPropertyValues("spring.kafka.template.default-topic=testTopic",
 						"spring.kafka.listener.ack-mode=MANUAL",
+						"spring.kafka.listener.client-id=client",
 						"spring.kafka.listener.ack-count=123",
 						"spring.kafka.listener.ack-time=456",
 						"spring.kafka.listener.concurrency=3",
 						"spring.kafka.listener.poll-timeout=2000",
-						"spring.kafka.listener.type=batch",
-						"spring.kafka.listener.client-id=client",
-						"spring.kafka.listener.idle-event-interval=12345",
-						"spring.kafka.listener.monitor-interval=45",
 						"spring.kafka.listener.no-poll-threshold=2.5",
+						"spring.kafka.listener.type=batch",
+						"spring.kafka.listener.idle-event-interval=1s",
+						"spring.kafka.listener.monitor-interval=45",
 						"spring.kafka.listener.log-container-config=true",
 						"spring.kafka.jaas.enabled=true",
 						"spring.kafka.producer.transaction-id-prefix=foo",
@@ -290,6 +290,8 @@ public class KafkaAutoConfigurationTests {
 							.isEqualTo(consumerFactory);
 					assertThat(dfa.getPropertyValue("containerProperties.ackMode"))
 							.isEqualTo(AckMode.MANUAL);
+					assertThat(dfa.getPropertyValue("containerProperties.clientId"))
+							.isEqualTo("client");
 					assertThat(dfa.getPropertyValue("containerProperties.ackCount"))
 							.isEqualTo(123);
 					assertThat(dfa.getPropertyValue("containerProperties.ackTime"))
@@ -297,14 +299,12 @@ public class KafkaAutoConfigurationTests {
 					assertThat(dfa.getPropertyValue("concurrency")).isEqualTo(3);
 					assertThat(dfa.getPropertyValue("containerProperties.pollTimeout"))
 							.isEqualTo(2000L);
-					assertThat(dfa.getPropertyValue("containerProperties.clientId"))
-							.isEqualTo("client");
-					assertThat(dfa.getPropertyValue("containerProperties.idleEventInterval"))
-							.isEqualTo(12345L);
-					assertThat(dfa.getPropertyValue("containerProperties.monitorInterval"))
-							.isEqualTo(45);
 					assertThat(dfa.getPropertyValue("containerProperties.noPollThreshold"))
 							.isEqualTo(2.5f);
+					assertThat(dfa.getPropertyValue("containerProperties.idleEventInterval"))
+							.isEqualTo(1000L);
+					assertThat(dfa.getPropertyValue("containerProperties.monitorInterval"))
+							.isEqualTo(45);
 					assertThat(dfa.getPropertyValue("containerProperties.logContainerConfig"))
 							.isEqualTo(Boolean.TRUE);
 					assertThat(dfa.getPropertyValue("batchListener")).isEqualTo(true);
diff --git a/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc b/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
index f5fed9d603c..50a96ca7921 100644
--- a/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
+++ b/spring-boot-project/spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc
@@ -989,10 +989,10 @@ content into your application. Rather, pick only the properties that you need.
 	spring.kafka.listener.ack-time= # Time between offset commits when ackMode is "TIME" or "COUNT_TIME".
 	spring.kafka.listener.client-id= # Prefix for the listener's consumer client.id property.
 	spring.kafka.listener.concurrency= # Number of threads to run in the listener containers.
-	spring.kafka.listener.idle-event-interval= # Interval (ms) between publishing idle consumer events (no data received).
-	spring.kafka.listener.log-container-config= # When true, log the container configuration during initialization (INFO level).
-	spring.kafka.listener.monitor-interval= # Interval (seconds) between checks for non-responsive consumers.
-	spring.kafka.listener.no-poll-threshold= # Multiplier applied to pollTimeout to determine if a consumer is non-responsive.
+	spring.kafka.listener.idle-event-interval= # Time between publishing idle consumer events (no data received).
+	spring.kafka.listener.log-container-config= # Whether to log the container configuration during initialization (INFO level).
+	spring.kafka.listener.monitor-interval= # Time between checks for non-responsive consumers. If a duration suffix is not specified, seconds will be used.
+	spring.kafka.listener.no-poll-threshold= # Multiplier applied to "pollTimeout" to determine if a consumer is non-responsive.
 	spring.kafka.listener.poll-timeout= # Timeout to use when polling the consumer.
 	spring.kafka.listener.type=single # Listener type.
 	spring.kafka.producer.acks= # Number of acknowledgments the producer requires the leader to have received before considering a request complete.