diff --git a/NEWS b/NEWS
index 7ffe74a9..89a52b10 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,6 @@
 procps-ng-NEXT
 ----------------
+  * doc: Document I idle state in ps.1 and top.1           Debian #886967
   * kill: -l space between name parses correctly           Debian #854407
   * library: dont use vm_min_free on non Linux             Debian #831396
   * library: dont use SIGPWR on FreeBSD                    Debian #832148
diff --git a/ps/ps.1 b/ps/ps.1
index 241f2575..1d0e2f17 100644
--- a/ps/ps.1
+++ b/ps/ps.1
@@ -4,7 +4,7 @@
 .\" Quick hack conversion by Albert Cahalan, 1998.
 .\" Licensed under version 2 of the Gnu General Public License.
 .\"
-.TH PS 1 "May 2017" "procps-ng" "User Commands"
+.TH PS 1 2018-01-13 "procps-ng" "User Commands"
 .\"
 .\" To render this page:
 .\"    groff -t -b -man -X -P-resolution -P100 -Tps ps.1 &
@@ -832,6 +832,9 @@ of a process:
 D
 uninterruptible sleep (usually IO)
 .TP
+I
+Idle kernel thread
+.TP
 R
 running or runnable (on run queue)
 .TP
diff --git a/top/top.1 b/top/top.1
index 28a713e8..20bd1075 100644
--- a/top/top.1
+++ b/top/top.1
@@ -836,6 +836,7 @@ The\fI real\fR user name.
 29.\fB S \*(Em Process Status \fR
 The status of the task which can be one of:
     \fBD\fR = uninterruptible sleep
+    \fBI\fR = idle
     \fBR\fR = running
     \fBS\fR = sleeping
     \fBT\fR = stopped by job control signal